./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 --- 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-e04fb08 [2022-11-16 11:40:02,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:40:02,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:40:02,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:40:02,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:40:02,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:40:02,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:40:02,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:40:02,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:40:02,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:40:02,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:40:02,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:40:02,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:40:02,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:40:02,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:40:02,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:40:02,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:40:02,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:40:02,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:40:02,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:40:02,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:40:02,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:40:02,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:40:02,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:40:02,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:40:02,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:40:02,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:40:02,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:40:02,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:40:02,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:40:02,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:40:02,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:40:02,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:40:02,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:40:02,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:40:02,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:40:02,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:40:02,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:40:02,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:40:02,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:40:02,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:40:02,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:40:02,461 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:40:02,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:40:02,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:40:02,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:40:02,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:40:02,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:40:02,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:40:02,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:40:02,463 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:40:02,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:40:02,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:40:02,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:40:02,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:40:02,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:40:02,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:40:02,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:40:02,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:40:02,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:40:02,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:40:02,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:40:02,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:40:02,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:02,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:40:02,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:40:02,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:40:02,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:40:02,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:40:02,474 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:40:02,475 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:40:02,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:40:02,476 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_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2022-11-16 11:40:02,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:40:02,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:40:02,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:40:02,746 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:40:02,747 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:40:02,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-11-16 11:40:02,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/data/b3962719a/d1c18e9cb7284997814bedcfc6752c37/FLAG1bff57b1f [2022-11-16 11:40:03,518 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:40:03,519 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-11-16 11:40:03,560 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/data/b3962719a/d1c18e9cb7284997814bedcfc6752c37/FLAG1bff57b1f [2022-11-16 11:40:03,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/data/b3962719a/d1c18e9cb7284997814bedcfc6752c37 [2022-11-16 11:40:03,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:40:03,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:40:03,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:03,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:40:03,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:40:03,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:03" (1/1) ... [2022-11-16 11:40:03,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73cb421a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:03, skipping insertion in model container [2022-11-16 11:40:03,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:40:03" (1/1) ... [2022-11-16 11:40:03,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:40:03,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:40:04,123 WARN L229 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_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4493,4506] [2022-11-16 11:40:04,129 WARN L229 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_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4553,4566] [2022-11-16 11:40:04,901 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,903 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,904 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,905 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,907 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,925 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,926 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,928 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,929 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,931 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,937 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,938 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:04,938 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,132 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:40:05,134 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:40:05,137 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:40:05,139 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:40:05,142 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:40:05,144 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:40:05,147 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:40:05,150 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:40:05,151 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:40:05,152 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:40:05,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:05,253 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:40:05,268 WARN L229 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_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4493,4506] [2022-11-16 11:40:05,269 WARN L229 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_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4553,4566] [2022-11-16 11:40:05,329 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,330 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,330 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,331 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,332 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,341 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,342 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,344 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,344 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,345 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,346 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,347 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,347 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:40:05,367 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:40:05,368 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:40:05,369 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:40:05,370 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:40:05,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:40:05,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:40:05,372 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:40:05,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:40:05,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:40:05,374 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:40:05,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:40:05,637 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:40:05,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05 WrapperNode [2022-11-16 11:40:05,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:40:05,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:05,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:40:05,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:40:05,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (1/1) ... [2022-11-16 11:40:05,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (1/1) ... [2022-11-16 11:40:05,747 INFO L138 Inliner]: procedures = 592, calls = 625, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 123 [2022-11-16 11:40:05,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:40:05,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:40:05,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:40:05,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:40:05,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (1/1) ... [2022-11-16 11:40:05,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (1/1) ... [2022-11-16 11:40:05,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (1/1) ... [2022-11-16 11:40:05,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (1/1) ... [2022-11-16 11:40:05,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (1/1) ... [2022-11-16 11:40:05,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (1/1) ... [2022-11-16 11:40:05,801 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (1/1) ... [2022-11-16 11:40:05,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (1/1) ... [2022-11-16 11:40:05,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:40:05,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:40:05,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:40:05,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:40:05,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (1/1) ... [2022-11-16 11:40:05,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:40:05,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:05,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:40:05,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:40:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:40:05,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:40:05,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:40:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:40:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:40:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:40:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:40:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:40:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:40:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:40:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-11-16 11:40:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-11-16 11:40:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-16 11:40:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-16 11:40:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:40:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:40:06,137 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:40:06,140 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:40:06,750 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:40:06,760 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:40:06,761 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:40:06,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:06 BoogieIcfgContainer [2022-11-16 11:40:06,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:40:06,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:40:06,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:40:06,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:40:06,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:40:03" (1/3) ... [2022-11-16 11:40:06,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c899873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:06, skipping insertion in model container [2022-11-16 11:40:06,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:40:05" (2/3) ... [2022-11-16 11:40:06,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c899873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:40:06, skipping insertion in model container [2022-11-16 11:40:06,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:06" (3/3) ... [2022-11-16 11:40:06,778 INFO L112 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2022-11-16 11:40:06,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:40:06,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:40:06,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:40:06,903 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b8975e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:40:06,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:40:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 54 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 11:40:06,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:40:06,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:06,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:06,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:06,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:06,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1569633619, now seen corresponding path program 1 times [2022-11-16 11:40:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:06,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200406278] [2022-11-16 11:40:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:40:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:07,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:40:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:07,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:40:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:40:07,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:07,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200406278] [2022-11-16 11:40:07,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200406278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:07,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:07,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:40:07,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968747416] [2022-11-16 11:40:07,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:07,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:40:07,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:07,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:40:07,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:40:07,583 INFO L87 Difference]: Start difference. First operand has 70 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 54 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:40:07,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:07,638 INFO L93 Difference]: Finished difference Result 137 states and 191 transitions. [2022-11-16 11:40:07,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:40:07,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-16 11:40:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:07,653 INFO L225 Difference]: With dead ends: 137 [2022-11-16 11:40:07,653 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 11:40:07,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:40:07,664 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:07,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:40:07,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 11:40:07,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-16 11:40:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 48 states have internal predecessors, (60), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:40:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2022-11-16 11:40:07,729 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 45 [2022-11-16 11:40:07,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:07,732 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2022-11-16 11:40:07,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:40:07,734 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2022-11-16 11:40:07,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:40:07,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:07,738 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:07,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:40:07,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:07,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1695278887, now seen corresponding path program 1 times [2022-11-16 11:40:07,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:07,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000941029] [2022-11-16 11:40:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:07,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:40:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:08,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:40:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:40:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:40:08,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:08,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000941029] [2022-11-16 11:40:08,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000941029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:08,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:08,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:08,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312499723] [2022-11-16 11:40:08,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:08,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:40:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:08,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:40:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:08,327 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:40:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:08,444 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2022-11-16 11:40:08,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:40:08,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-16 11:40:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:08,448 INFO L225 Difference]: With dead ends: 122 [2022-11-16 11:40:08,449 INFO L226 Difference]: Without dead ends: 75 [2022-11-16 11:40:08,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:08,453 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 5 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:08,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 125 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:40:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-16 11:40:08,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2022-11-16 11:40:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 60 states have internal predecessors, (72), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:40:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2022-11-16 11:40:08,477 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 45 [2022-11-16 11:40:08,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:08,478 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2022-11-16 11:40:08,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:40:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2022-11-16 11:40:08,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:40:08,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:08,483 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:08,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:40:08,484 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:08,484 INFO L85 PathProgramCache]: Analyzing trace with hash -910744667, now seen corresponding path program 1 times [2022-11-16 11:40:08,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:08,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674711982] [2022-11-16 11:40:08,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:08,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:09,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:40:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:09,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:40:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:09,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:40:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:40:09,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:09,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674711982] [2022-11-16 11:40:09,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674711982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:09,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:09,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:40:09,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926015640] [2022-11-16 11:40:09,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:09,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:09,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:09,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:09,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:40:09,565 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:40:09,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:09,876 INFO L93 Difference]: Finished difference Result 157 states and 196 transitions. [2022-11-16 11:40:09,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:40:09,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 11:40:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:09,880 INFO L225 Difference]: With dead ends: 157 [2022-11-16 11:40:09,881 INFO L226 Difference]: Without dead ends: 108 [2022-11-16 11:40:09,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:40:09,891 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 114 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:09,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 325 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:40:09,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-16 11:40:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2022-11-16 11:40:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 76 states have internal predecessors, (88), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:40:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2022-11-16 11:40:09,926 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 45 [2022-11-16 11:40:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:09,927 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2022-11-16 11:40:09,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:40:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2022-11-16 11:40:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:40:09,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:09,931 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:09,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:40:09,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:09,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:09,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1853556659, now seen corresponding path program 1 times [2022-11-16 11:40:09,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:09,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839715655] [2022-11-16 11:40:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:09,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:10,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:40:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:10,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:40:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:40:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:40:10,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:10,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839715655] [2022-11-16 11:40:10,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839715655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:10,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:10,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:40:10,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876020431] [2022-11-16 11:40:10,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:10,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:10,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:10,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:10,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:40:10,639 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:40:10,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:10,735 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2022-11-16 11:40:10,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:40:10,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-16 11:40:10,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:10,743 INFO L225 Difference]: With dead ends: 97 [2022-11-16 11:40:10,743 INFO L226 Difference]: Without dead ends: 95 [2022-11-16 11:40:10,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:40:10,745 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 32 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:10,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 294 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:40:10,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-16 11:40:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-16 11:40:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 79 states have internal predecessors, (91), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:40:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2022-11-16 11:40:10,763 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 45 [2022-11-16 11:40:10,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:10,764 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2022-11-16 11:40:10,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:40:10,765 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2022-11-16 11:40:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:40:10,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:10,766 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:10,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:40:10,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:10,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:10,767 INFO L85 PathProgramCache]: Analyzing trace with hash 298962732, now seen corresponding path program 1 times [2022-11-16 11:40:10,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:10,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910051199] [2022-11-16 11:40:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:10,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:40:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:40:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:11,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:40:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 11:40:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:40:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 11:40:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:40:11,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:11,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910051199] [2022-11-16 11:40:11,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910051199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:11,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:11,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:40:11,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591200273] [2022-11-16 11:40:11,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:11,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:40:11,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:40:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:40:11,552 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 11:40:11,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:11,694 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2022-11-16 11:40:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:40:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 62 [2022-11-16 11:40:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:11,696 INFO L225 Difference]: With dead ends: 134 [2022-11-16 11:40:11,696 INFO L226 Difference]: Without dead ends: 106 [2022-11-16 11:40:11,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:40:11,698 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 55 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:11,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 282 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:40:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-16 11:40:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2022-11-16 11:40:11,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 87 states have internal predecessors, (101), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 11:40:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 125 transitions. [2022-11-16 11:40:11,719 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 125 transitions. Word has length 62 [2022-11-16 11:40:11,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:11,719 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 125 transitions. [2022-11-16 11:40:11,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 11:40:11,720 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 125 transitions. [2022-11-16 11:40:11,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:40:11,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:11,722 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:11,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:40:11,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:11,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash -983473925, now seen corresponding path program 1 times [2022-11-16 11:40:11,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:11,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411234126] [2022-11-16 11:40:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:11,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:40:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:40:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:40:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-16 11:40:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-16 11:40:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:40:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:40:12,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:12,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411234126] [2022-11-16 11:40:12,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411234126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:12,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:12,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:40:12,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527721201] [2022-11-16 11:40:12,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:12,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:40:12,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:12,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:40:12,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:12,101 INFO L87 Difference]: Start difference. First operand 104 states and 125 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:40:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:12,136 INFO L93 Difference]: Finished difference Result 176 states and 211 transitions. [2022-11-16 11:40:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:40:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-11-16 11:40:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:12,138 INFO L225 Difference]: With dead ends: 176 [2022-11-16 11:40:12,138 INFO L226 Difference]: Without dead ends: 106 [2022-11-16 11:40:12,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:40:12,140 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 1 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:12,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 151 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:40:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-16 11:40:12,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2022-11-16 11:40:12,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 88 states have internal predecessors, (102), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 11:40:12,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2022-11-16 11:40:12,156 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 63 [2022-11-16 11:40:12,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:12,157 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2022-11-16 11:40:12,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:40:12,157 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2022-11-16 11:40:12,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 11:40:12,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:12,159 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:12,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:40:12,159 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:12,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1563625393, now seen corresponding path program 1 times [2022-11-16 11:40:12,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:12,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225673023] [2022-11-16 11:40:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:12,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:40:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:40:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:40:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-16 11:40:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:40:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:40:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:40:12,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:12,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225673023] [2022-11-16 11:40:12,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225673023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:12,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:12,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:40:12,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870649190] [2022-11-16 11:40:12,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:12,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:40:12,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:12,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:40:12,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:40:12,793 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:40:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:12,919 INFO L93 Difference]: Finished difference Result 127 states and 147 transitions. [2022-11-16 11:40:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:40:12,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 66 [2022-11-16 11:40:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:12,920 INFO L225 Difference]: With dead ends: 127 [2022-11-16 11:40:12,921 INFO L226 Difference]: Without dead ends: 79 [2022-11-16 11:40:12,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:40:12,922 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 49 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:12,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 387 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:40:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-16 11:40:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-16 11:40:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:40:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2022-11-16 11:40:12,933 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 66 [2022-11-16 11:40:12,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:12,933 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2022-11-16 11:40:12,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:40:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2022-11-16 11:40:12,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:40:12,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:12,935 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:12,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:40:12,935 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:12,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash 168968953, now seen corresponding path program 1 times [2022-11-16 11:40:12,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:12,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852265942] [2022-11-16 11:40:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:13,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:40:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:13,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:40:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:40:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:40:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:13,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:40:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:13,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:40:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 11:40:13,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:13,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852265942] [2022-11-16 11:40:13,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852265942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:40:13,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:40:13,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:40:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152742952] [2022-11-16 11:40:13,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:40:13,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:40:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:40:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:40:13,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:13,261 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:40:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:13,411 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2022-11-16 11:40:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:40:13,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2022-11-16 11:40:13,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:13,412 INFO L225 Difference]: With dead ends: 131 [2022-11-16 11:40:13,413 INFO L226 Difference]: Without dead ends: 95 [2022-11-16 11:40:13,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:40:13,414 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 13 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:13,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 255 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:40:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-16 11:40:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2022-11-16 11:40:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:40:13,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2022-11-16 11:40:13,427 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 65 [2022-11-16 11:40:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:13,428 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2022-11-16 11:40:13,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:40:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2022-11-16 11:40:13,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:40:13,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:13,430 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:13,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:40:13,430 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:40:13,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:13,431 INFO L85 PathProgramCache]: Analyzing trace with hash 231008567, now seen corresponding path program 1 times [2022-11-16 11:40:13,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:40:13,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427224034] [2022-11-16 11:40:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:13,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:40:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:40:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:40:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:40:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:40:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:21,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:40:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:40:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:21,353 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:40:21,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:40:21,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427224034] [2022-11-16 11:40:21,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427224034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:40:21,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556521064] [2022-11-16 11:40:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:40:21,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:40:21,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:40:21,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:40:21,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:40:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:40:21,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-16 11:40:21,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:21,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:40:22,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2022-11-16 11:40:22,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 75 [2022-11-16 11:40:27,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2022-11-16 11:40:27,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2022-11-16 11:40:27,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2022-11-16 11:40:27,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2022-11-16 11:40:27,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2022-11-16 11:40:27,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2022-11-16 11:40:28,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2022-11-16 11:40:59,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:40:59,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 33 [2022-11-16 11:40:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:40:59,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:00,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556521064] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:00,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:41:00,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 40 [2022-11-16 11:41:00,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679883153] [2022-11-16 11:41:00,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:41:00,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 11:41:00,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:41:00,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 11:41:00,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1736, Unknown=3, NotChecked=0, Total=1892 [2022-11-16 11:41:00,951 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 40 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 37 states have internal predecessors, (93), 11 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 11:41:19,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:19,720 INFO L93 Difference]: Finished difference Result 259 states and 313 transitions. [2022-11-16 11:41:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:41:19,721 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 37 states have internal predecessors, (93), 11 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) Word has length 65 [2022-11-16 11:41:19,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:19,723 INFO L225 Difference]: With dead ends: 259 [2022-11-16 11:41:19,724 INFO L226 Difference]: Without dead ends: 257 [2022-11-16 11:41:19,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 64 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1233 ImplicationChecksByTransitivity, 44.9s TimeCoverageRelationStatistics Valid=382, Invalid=3903, Unknown=5, NotChecked=0, Total=4290 [2022-11-16 11:41:19,728 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 394 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 287 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:19,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 2599 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1663 Invalid, 0 Unknown, 287 Unchecked, 8.7s Time] [2022-11-16 11:41:19,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-16 11:41:19,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 216. [2022-11-16 11:41:19,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 177 states have (on average 1.1977401129943503) internal successors, (212), 180 states have internal predecessors, (212), 25 states have call successors, (25), 15 states have call predecessors, (25), 13 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-16 11:41:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2022-11-16 11:41:19,770 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 65 [2022-11-16 11:41:19,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:19,771 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2022-11-16 11:41:19,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 37 states have internal predecessors, (93), 11 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-16 11:41:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2022-11-16 11:41:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:41:19,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:19,773 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:19,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:41:19,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:41:19,986 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:19,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:19,987 INFO L85 PathProgramCache]: Analyzing trace with hash -725622039, now seen corresponding path program 1 times [2022-11-16 11:41:19,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:41:19,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076545364] [2022-11-16 11:41:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:19,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:41:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:41:20,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:41:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:41:20,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:41:20,259 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:41:20,261 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:41:20,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:41:20,268 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:20,273 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:41:20,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:41:20 BoogieIcfgContainer [2022-11-16 11:41:20,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:41:20,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:41:20,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:41:20,378 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:41:20,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:40:06" (3/4) ... [2022-11-16 11:41:20,382 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:41:20,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:41:20,382 INFO L158 Benchmark]: Toolchain (without parser) took 76722.25ms. Allocated memory was 113.2MB in the beginning and 461.4MB in the end (delta: 348.1MB). Free memory was 74.3MB in the beginning and 176.7MB in the end (delta: -102.4MB). Peak memory consumption was 244.7MB. Max. memory is 16.1GB. [2022-11-16 11:41:20,383 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:41:20,383 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1973.22ms. Allocated memory was 113.2MB in the beginning and 138.4MB in the end (delta: 25.2MB). Free memory was 74.1MB in the beginning and 98.5MB in the end (delta: -24.4MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-16 11:41:20,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.36ms. Allocated memory is still 138.4MB. Free memory was 98.5MB in the beginning and 93.6MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 11:41:20,384 INFO L158 Benchmark]: Boogie Preprocessor took 59.00ms. Allocated memory is still 138.4MB. Free memory was 93.6MB in the beginning and 90.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:41:20,384 INFO L158 Benchmark]: RCFGBuilder took 956.57ms. Allocated memory is still 138.4MB. Free memory was 90.8MB in the beginning and 62.1MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-16 11:41:20,385 INFO L158 Benchmark]: TraceAbstraction took 73607.96ms. Allocated memory was 138.4MB in the beginning and 461.4MB in the end (delta: 323.0MB). Free memory was 61.4MB in the beginning and 176.7MB in the end (delta: -115.3MB). Peak memory consumption was 207.0MB. Max. memory is 16.1GB. [2022-11-16 11:41:20,386 INFO L158 Benchmark]: Witness Printer took 4.25ms. Allocated memory is still 461.4MB. Free memory is still 176.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:41:20,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1973.22ms. Allocated memory was 113.2MB in the beginning and 138.4MB in the end (delta: 25.2MB). Free memory was 74.1MB in the beginning and 98.5MB in the end (delta: -24.4MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.36ms. Allocated memory is still 138.4MB. Free memory was 98.5MB in the beginning and 93.6MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.00ms. Allocated memory is still 138.4MB. Free memory was 93.6MB in the beginning and 90.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 956.57ms. Allocated memory is still 138.4MB. Free memory was 90.8MB in the beginning and 62.1MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 73607.96ms. Allocated memory was 138.4MB in the beginning and 461.4MB in the end (delta: 323.0MB). Free memory was 61.4MB in the beginning and 176.7MB in the end (delta: -115.3MB). Peak memory consumption was 207.0MB. Max. memory is 16.1GB. * Witness Printer took 4.25ms. Allocated memory is still 461.4MB. Free memory is still 176.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 5884. Possible FailurePath: [L5947] CALL memset_using_uint64_harness() [L5937] short d1[160]; [L5938] short d2[160]; [L5939] int c = __VERIFIER_nondet_int(); [L5940] unsigned size = __VERIFIER_nondet_uint(); [L5941] CALL assume_abort_if_not(size < 160) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5941] RET assume_abort_if_not(size < 160) VAL [c=255, d1={11:0}, d2={10:0}, size=1] [L5942] CALL memset_impl(d1, c, size) [L5870] CALL assume_abort_if_not((((n) == 0) || (s))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5870] RET assume_abort_if_not((((n) == 0) || (s))) VAL [c=255, n=1, s={11:0}] [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; VAL [c=255, i=0, n=1, s={11:0}, sp={11:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=255, i=0, n=1, s={11:0}, sp={11:0}] [L5873] i++ VAL [c=255, i=1, n=1, s={11:0}, sp={11:0}] [L5873] COND FALSE !(i < n) VAL [c=255, i=1, n=1, s={11:0}, sp={11:0}] [L5876] return s; VAL [c=255, i=1, n=1, s={11:0}, sp={11:0}] [L5942] RET memset_impl(d1, c, size) [L5943] CALL memset_using_uint64_impl(d2, c, size) [L5881] CALL assume_abort_if_not((((n) == 0) || (dst))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5881] RET assume_abort_if_not((((n) == 0) || (dst))) VAL [c=255, dst={10:0}, n=1] [L5883] size_t num_uint64s = n >> 3; [L5884] size_t rem = n & 0x7; [L5886] uint8_t *d = (uint8_t *)dst; [L5890] case 7: VAL [c=255, d={10:0}, dst={10:0}, n=1, num_uint64s=0, rem=14] [L5892] case 6: VAL [c=255, d={10:0}, dst={10:0}, n=1, num_uint64s=0, rem=14] [L5894] case 5: VAL [c=255, d={10:0}, dst={10:0}, n=1, num_uint64s=0, rem=14] [L5896] case 4: VAL [c=255, d={10:0}, dst={10:0}, n=1, num_uint64s=0, rem=14] [L5898] case 3: VAL [c=255, d={10:0}, dst={10:0}, n=1, num_uint64s=0, rem=14] [L5900] case 2: VAL [c=255, d={10:0}, dst={10:0}, n=1, num_uint64s=0, rem=14] [L5902] case 1: VAL [c=255, d={10:0}, dst={10:0}, n=1, num_uint64s=0, rem=14] [L5906] d += rem [L5908] uint64_t compounded = 0; VAL [c=255, compounded={9:0}, d={10:14}, dst={10:0}, n=1, num_uint64s=0, rem=14] [L5909] COND FALSE !(num_uint64s > 0 && c != 0) VAL [c=255, compounded={9:0}, d={10:14}, dst={10:0}, n=1, num_uint64s=0, rem=14] [L5921] size_t i = 0; VAL [c=255, compounded={9:0}, d={10:14}, dst={10:0}, i=0, n=1, num_uint64s=0, rem=14] [L5921] COND FALSE !(i < num_uint64s) VAL [c=255, compounded={9:0}, d={10:14}, dst={10:0}, i=0, n=1, num_uint64s=0, rem=14] [L5925] return dst; [L5908] uint64_t compounded = 0; [L5925] return dst; VAL [c=255, d={10:14}, dst={10:0}, i=0, n=1, num_uint64s=0, rem=14] [L5943] RET memset_using_uint64_impl(d2, c, size) [L5944] CALL assert_bytes_match(d1, d2, size) [L5654] CALL __VERIFIER_assert(!a == !b) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5654] RET __VERIFIER_assert(!a == !b) VAL [\old(len)=1, a={11:0}, a={11:0}, b={10:0}, b={10:0}, len=1] [L5655-L5658] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) VAL [\old(len)=1, a={11:0}, a={11:0}, b={10:0}, b={10:0}, len=1] [L5660] CALL, EXPR nondet_uint64_t() [L266] return __VERIFIER_nondet_ulong(); [L5660] RET, EXPR nondet_uint64_t() VAL [\old(len)=1, a={11:0}, a={11:0}, b={10:0}, b={10:0}, len=1, nondet_uint64_t()=18446744073709551616] [L5660] size_t i = nondet_uint64_t(); [L5661-L5663] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5661-L5663] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(len)=1, a={11:0}, a={11:0}, b={10:0}, b={10:0}, i=0, len=1] [L5664] EXPR a[i] [L5664] EXPR b[i] VAL [\old(len)=1, a={11:0}, a={11:0}, a[i]=-1, b={10:0}, b={10:0}, b[i]=13, i=0, len=1] [L5664] CALL __VERIFIER_assert(a[i] == b[i]) VAL [\old(cond)=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L223] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.4s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 691 SdHoareTripleChecker+Valid, 9.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 663 mSDsluCounter, 4507 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 287 IncrementalHoareTripleChecker+Unchecked, 3689 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1943 IncrementalHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 818 mSDtfsCounter, 1943 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 262 GetRequests, 163 SyntacticMatches, 7 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 45.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=9, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 76 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 50.8s InterpolantComputationTime, 631 NumberOfCodeBlocks, 631 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 556 ConstructedInterpolants, 15 QuantifiedInterpolants, 9545 SizeOfPredicates, 42 NumberOfNonLiveVariables, 372 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 200/207 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 11:41:20,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 --- 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-e04fb08 [2022-11-16 11:41:22,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:41:22,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:41:22,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:41:22,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:41:22,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:41:22,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:41:22,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:41:22,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:41:22,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:41:22,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:41:22,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:41:22,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:41:22,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:41:22,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:41:22,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:41:22,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:41:22,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:41:22,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:41:22,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:41:22,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:41:22,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:41:22,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:41:22,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:41:22,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:41:22,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:41:22,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:41:22,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:41:22,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:41:22,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:41:22,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:41:22,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:41:22,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:41:22,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:41:22,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:41:22,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:41:22,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:41:22,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:41:22,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:41:22,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:41:22,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:41:22,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-16 11:41:22,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:41:22,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:41:22,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:41:22,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:41:22,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:41:22,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:41:22,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:41:22,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:41:22,994 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:41:22,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:41:22,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:41:22,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:41:22,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:41:22,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:41:22,996 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:41:22,997 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:41:22,997 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:41:22,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:41:22,997 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:41:22,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:41:22,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:41:22,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:41:22,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:41:22,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:41:22,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:41:22,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:41:23,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:41:23,000 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:41:23,000 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:41:23,000 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:41:23,000 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:41:23,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:41:23,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:41:23,001 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2022-11-16 11:41:23,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:41:23,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:41:23,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:41:23,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:41:23,492 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:41:23,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-11-16 11:41:23,567 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/data/d20daf333/6e8445a4d3a348b78e97fe99524476f9/FLAG3cbd87cc2 [2022-11-16 11:41:24,383 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:41:24,384 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-11-16 11:41:24,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/data/d20daf333/6e8445a4d3a348b78e97fe99524476f9/FLAG3cbd87cc2 [2022-11-16 11:41:24,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/data/d20daf333/6e8445a4d3a348b78e97fe99524476f9 [2022-11-16 11:41:24,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:41:24,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:41:24,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:41:24,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:41:24,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:41:24,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:41:24" (1/1) ... [2022-11-16 11:41:24,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c2845bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:24, skipping insertion in model container [2022-11-16 11:41:24,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:41:24" (1/1) ... [2022-11-16 11:41:24,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:41:24,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:41:25,063 WARN L229 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_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4493,4506] [2022-11-16 11:41:25,072 WARN L229 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_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4553,4566] [2022-11-16 11:41:26,072 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,073 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,073 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,074 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,076 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,091 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,092 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,095 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,096 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,098 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,099 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,100 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,101 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,362 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:41:26,364 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:41:26,365 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:41:26,379 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:41:26,382 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:41:26,383 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:41:26,384 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:41:26,385 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:41:26,386 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:41:26,387 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:41:26,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:41:26,493 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 11:41:26,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:41:26,538 WARN L229 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_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4493,4506] [2022-11-16 11:41:26,539 WARN L229 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_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4553,4566] [2022-11-16 11:41:26,590 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,591 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,591 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,592 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,593 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,603 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,604 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,606 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,607 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,609 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,610 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,612 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,618 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,661 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:41:26,665 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:41:26,670 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:41:26,672 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:41:26,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:41:26,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:41:26,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:41:26,681 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:41:26,682 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:41:26,682 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:41:26,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:41:26,748 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:41:26,785 WARN L229 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_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4493,4506] [2022-11-16 11:41:26,785 WARN L229 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_87c21b0d-1218-461d-acba-48f84272ddeb/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i[4553,4566] [2022-11-16 11:41:26,857 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,861 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,862 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,862 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,864 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,872 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,886 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,887 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,888 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,891 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,892 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,898 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,898 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:41:26,917 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:41:26,918 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:41:26,919 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:41:26,920 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:41:26,921 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:41:26,921 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:41:26,922 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:41:26,922 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:41:26,923 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:41:26,923 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:41:27,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:41:27,265 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:41:27,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27 WrapperNode [2022-11-16 11:41:27,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:41:27,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:41:27,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:41:27,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:41:27,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (1/1) ... [2022-11-16 11:41:27,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (1/1) ... [2022-11-16 11:41:27,390 INFO L138 Inliner]: procedures = 611, calls = 625, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 123 [2022-11-16 11:41:27,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:41:27,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:41:27,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:41:27,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:41:27,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (1/1) ... [2022-11-16 11:41:27,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (1/1) ... [2022-11-16 11:41:27,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (1/1) ... [2022-11-16 11:41:27,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (1/1) ... [2022-11-16 11:41:27,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (1/1) ... [2022-11-16 11:41:27,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (1/1) ... [2022-11-16 11:41:27,442 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (1/1) ... [2022-11-16 11:41:27,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (1/1) ... [2022-11-16 11:41:27,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:41:27,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:41:27,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:41:27,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:41:27,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (1/1) ... [2022-11-16 11:41:27,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:41:27,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:41:27,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:41:27,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:41:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:41:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:41:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-16 11:41:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:41:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:41:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:41:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:41:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:41:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-16 11:41:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-16 11:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:41:27,577 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:41:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:41:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-16 11:41:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-16 11:41:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-11-16 11:41:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-11-16 11:41:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-16 11:41:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-16 11:41:27,943 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:41:27,946 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:41:31,146 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:41:31,154 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:41:31,154 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:41:31,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:41:31 BoogieIcfgContainer [2022-11-16 11:41:31,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:41:31,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:41:31,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:41:31,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:41:31,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:41:24" (1/3) ... [2022-11-16 11:41:31,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bf1d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:41:31, skipping insertion in model container [2022-11-16 11:41:31,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:41:27" (2/3) ... [2022-11-16 11:41:31,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bf1d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:41:31, skipping insertion in model container [2022-11-16 11:41:31,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:41:31" (3/3) ... [2022-11-16 11:41:31,184 INFO L112 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2022-11-16 11:41:31,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:41:31,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:41:31,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:41:31,299 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1421bf7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:41:31,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:41:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 54 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 11:41:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:41:31,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:31,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:31,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1430345650, now seen corresponding path program 1 times [2022-11-16 11:41:31,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:31,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299407236] [2022-11-16 11:41:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:31,344 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:31,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:31,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:31,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:41:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:31,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 11:41:31,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:41:31,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:41:31,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:31,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299407236] [2022-11-16 11:41:31,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299407236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:31,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:31,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:41:31,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102017726] [2022-11-16 11:41:31,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:31,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:41:31,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:31,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:41:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:41:31,741 INFO L87 Difference]: Start difference. First operand has 70 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 54 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:41:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:31,769 INFO L93 Difference]: Finished difference Result 137 states and 191 transitions. [2022-11-16 11:41:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:41:31,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-11-16 11:41:31,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:31,779 INFO L225 Difference]: With dead ends: 137 [2022-11-16 11:41:31,779 INFO L226 Difference]: Without dead ends: 62 [2022-11-16 11:41:31,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:41:31,786 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:31,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:41:31,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-16 11:41:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-16 11:41:31,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 48 states have internal predecessors, (60), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:41:31,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2022-11-16 11:41:31,828 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 45 [2022-11-16 11:41:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:31,829 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2022-11-16 11:41:31,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:41:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2022-11-16 11:41:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:41:31,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:31,832 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:31,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-16 11:41:32,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:32,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:32,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1361752392, now seen corresponding path program 1 times [2022-11-16 11:41:32,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:32,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885185013] [2022-11-16 11:41:32,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:32,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:32,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:32,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:32,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:41:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:32,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:41:32,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:41:32,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:41:32,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:32,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885185013] [2022-11-16 11:41:32,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885185013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:32,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:32,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:41:32,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51503332] [2022-11-16 11:41:32,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:32,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:41:32,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:41:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:41:32,685 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:33,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:33,314 INFO L93 Difference]: Finished difference Result 158 states and 203 transitions. [2022-11-16 11:41:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:41:33,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 11:41:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:33,318 INFO L225 Difference]: With dead ends: 158 [2022-11-16 11:41:33,319 INFO L226 Difference]: Without dead ends: 109 [2022-11-16 11:41:33,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:41:33,321 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 48 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:33,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 438 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 30 Unchecked, 0.5s Time] [2022-11-16 11:41:33,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-16 11:41:33,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 67. [2022-11-16 11:41:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 52 states have internal predecessors, (64), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:41:33,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2022-11-16 11:41:33,361 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 45 [2022-11-16 11:41:33,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:33,362 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2022-11-16 11:41:33,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:33,363 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2022-11-16 11:41:33,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:41:33,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:33,366 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:33,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:33,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:33,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:33,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:33,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1127776570, now seen corresponding path program 1 times [2022-11-16 11:41:33,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:33,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786388444] [2022-11-16 11:41:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:33,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:33,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:33,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:33,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 11:41:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:33,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:41:33,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:41:34,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:41:34,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:34,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786388444] [2022-11-16 11:41:34,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786388444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:34,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:34,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:41:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483358833] [2022-11-16 11:41:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:34,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:41:34,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:41:34,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:41:34,540 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:35,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:35,055 INFO L93 Difference]: Finished difference Result 155 states and 198 transitions. [2022-11-16 11:41:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:41:35,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 11:41:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:35,057 INFO L225 Difference]: With dead ends: 155 [2022-11-16 11:41:35,058 INFO L226 Difference]: Without dead ends: 110 [2022-11-16 11:41:35,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:41:35,060 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 48 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:35,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 355 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 36 Unchecked, 0.3s Time] [2022-11-16 11:41:35,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-16 11:41:35,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 71. [2022-11-16 11:41:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 56 states have internal predecessors, (69), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:41:35,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2022-11-16 11:41:35,073 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 45 [2022-11-16 11:41:35,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:35,074 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2022-11-16 11:41:35,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2022-11-16 11:41:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:41:35,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:35,076 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:35,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:35,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:35,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:35,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:35,295 INFO L85 PathProgramCache]: Analyzing trace with hash -561167172, now seen corresponding path program 1 times [2022-11-16 11:41:35,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:35,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832306311] [2022-11-16 11:41:35,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:35,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:35,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:35,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:35,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 11:41:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:35,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:41:35,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:41:36,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:41:36,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:36,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832306311] [2022-11-16 11:41:36,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832306311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:36,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:36,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:41:36,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552048374] [2022-11-16 11:41:36,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:36,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:41:36,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:41:36,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:41:36,163 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:36,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:36,530 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2022-11-16 11:41:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:41:36,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 11:41:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:36,533 INFO L225 Difference]: With dead ends: 123 [2022-11-16 11:41:36,533 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 11:41:36,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:41:36,535 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 17 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:36,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 364 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-11-16 11:41:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 11:41:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2022-11-16 11:41:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 58 states have internal predecessors, (71), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:41:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2022-11-16 11:41:36,546 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 45 [2022-11-16 11:41:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:36,547 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2022-11-16 11:41:36,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2022-11-16 11:41:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:41:36,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:36,549 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:36,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:36,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:36,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:36,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:36,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2145452222, now seen corresponding path program 1 times [2022-11-16 11:41:36,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:36,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536052988] [2022-11-16 11:41:36,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:36,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:36,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:36,774 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:36,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 11:41:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:37,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:41:37,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:41:37,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:41:37,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:37,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536052988] [2022-11-16 11:41:37,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536052988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:37,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:37,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:41:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138305639] [2022-11-16 11:41:37,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:37,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:41:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:41:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:41:37,778 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:38,197 INFO L93 Difference]: Finished difference Result 153 states and 194 transitions. [2022-11-16 11:41:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:41:38,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 11:41:38,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:38,199 INFO L225 Difference]: With dead ends: 153 [2022-11-16 11:41:38,199 INFO L226 Difference]: Without dead ends: 112 [2022-11-16 11:41:38,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:41:38,201 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 48 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:38,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 343 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 73 Invalid, 0 Unknown, 46 Unchecked, 0.3s Time] [2022-11-16 11:41:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-16 11:41:38,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 75. [2022-11-16 11:41:38,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 60 states have internal predecessors, (73), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:41:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2022-11-16 11:41:38,219 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 45 [2022-11-16 11:41:38,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:38,220 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2022-11-16 11:41:38,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:38,220 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2022-11-16 11:41:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:41:38,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:38,229 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:38,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:38,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:38,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:38,457 INFO L85 PathProgramCache]: Analyzing trace with hash 865588544, now seen corresponding path program 1 times [2022-11-16 11:41:38,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:38,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884561388] [2022-11-16 11:41:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:38,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:38,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:38,459 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:38,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 11:41:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:38,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:41:38,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:41:39,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:41:39,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:39,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884561388] [2022-11-16 11:41:39,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884561388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:39,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:39,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:41:39,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30195434] [2022-11-16 11:41:39,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:39,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:41:39,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:41:39,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:41:39,452 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:39,802 INFO L93 Difference]: Finished difference Result 121 states and 149 transitions. [2022-11-16 11:41:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:41:39,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 11:41:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:39,803 INFO L225 Difference]: With dead ends: 121 [2022-11-16 11:41:39,804 INFO L226 Difference]: Without dead ends: 82 [2022-11-16 11:41:39,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:41:39,805 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 17 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:39,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 346 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2022-11-16 11:41:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-16 11:41:39,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2022-11-16 11:41:39,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 62 states have internal predecessors, (75), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:41:39,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2022-11-16 11:41:39,820 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 45 [2022-11-16 11:41:39,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:39,820 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2022-11-16 11:41:39,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2022-11-16 11:41:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:41:39,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:39,825 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:39,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:40,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:40,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:40,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:40,027 INFO L85 PathProgramCache]: Analyzing trace with hash 278782530, now seen corresponding path program 1 times [2022-11-16 11:41:40,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:40,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585178791] [2022-11-16 11:41:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:40,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:40,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:40,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:40,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 11:41:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:40,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:41:40,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:41:41,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:41:41,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:41,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585178791] [2022-11-16 11:41:41,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585178791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:41,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:41,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:41:41,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674850146] [2022-11-16 11:41:41,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:41,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:41:41,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:41:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:41:41,068 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:41,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:41,233 INFO L93 Difference]: Finished difference Result 117 states and 144 transitions. [2022-11-16 11:41:41,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:41:41,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 11:41:41,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:41,235 INFO L225 Difference]: With dead ends: 117 [2022-11-16 11:41:41,235 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 11:41:41,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:41:41,237 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 16 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:41,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 340 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2022-11-16 11:41:41,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 11:41:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-11-16 11:41:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:41:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2022-11-16 11:41:41,243 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 45 [2022-11-16 11:41:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:41,244 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2022-11-16 11:41:41,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2022-11-16 11:41:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:41:41,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:41,245 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:41,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:41,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:41,461 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:41,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:41,461 INFO L85 PathProgramCache]: Analyzing trace with hash 979847108, now seen corresponding path program 1 times [2022-11-16 11:41:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:41,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330417988] [2022-11-16 11:41:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:41,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:41,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:41,464 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:41,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 11:41:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:41,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:41:41,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:41:42,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:41:42,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:42,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330417988] [2022-11-16 11:41:42,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330417988] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:42,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:41:42,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-11-16 11:41:42,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899438262] [2022-11-16 11:41:42,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:42,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:41:42,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:42,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:41:42,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:41:42,609 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:44,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:41:45,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:45,272 INFO L93 Difference]: Finished difference Result 140 states and 177 transitions. [2022-11-16 11:41:45,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:41:45,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-11-16 11:41:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:45,274 INFO L225 Difference]: With dead ends: 140 [2022-11-16 11:41:45,274 INFO L226 Difference]: Without dead ends: 105 [2022-11-16 11:41:45,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:41:45,276 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 126 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:45,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 316 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 58 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 11:41:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-16 11:41:45,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2022-11-16 11:41:45,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 78 states have internal predecessors, (96), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:41:45,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2022-11-16 11:41:45,289 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 45 [2022-11-16 11:41:45,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:45,289 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2022-11-16 11:41:45,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:41:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2022-11-16 11:41:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 11:41:45,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:45,291 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:45,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-16 11:41:45,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:45,509 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:45,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:45,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1659905478, now seen corresponding path program 1 times [2022-11-16 11:41:45,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:45,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579137932] [2022-11-16 11:41:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:45,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:45,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:45,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:45,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 11:41:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:45,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:41:45,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:41:46,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:41:46,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:46,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579137932] [2022-11-16 11:41:46,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579137932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:46,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:46,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:41:46,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685668483] [2022-11-16 11:41:46,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:46,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:41:46,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:41:46,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:41:46,040 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:41:46,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:46,242 INFO L93 Difference]: Finished difference Result 99 states and 123 transitions. [2022-11-16 11:41:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:41:46,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-11-16 11:41:46,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:46,244 INFO L225 Difference]: With dead ends: 99 [2022-11-16 11:41:46,244 INFO L226 Difference]: Without dead ends: 97 [2022-11-16 11:41:46,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:41:46,245 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 32 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:46,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 294 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-16 11:41:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-16 11:41:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 80 states have (on average 1.2375) internal successors, (99), 81 states have internal predecessors, (99), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:41:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2022-11-16 11:41:46,260 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 45 [2022-11-16 11:41:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:46,261 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2022-11-16 11:41:46,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 11:41:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2022-11-16 11:41:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:41:46,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:46,268 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:46,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:46,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:46,469 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:46,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:46,470 INFO L85 PathProgramCache]: Analyzing trace with hash 990784662, now seen corresponding path program 1 times [2022-11-16 11:41:46,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:46,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741755648] [2022-11-16 11:41:46,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:46,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:46,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:46,472 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:46,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 11:41:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:46,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:41:46,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:41:46,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:41:47,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:47,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741755648] [2022-11-16 11:41:47,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741755648] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:47,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:41:47,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2022-11-16 11:41:47,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513126731] [2022-11-16 11:41:47,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:47,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:41:47,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:47,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:41:47,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:41:47,216 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 11:41:47,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:47,378 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2022-11-16 11:41:47,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:41:47,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 62 [2022-11-16 11:41:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:47,380 INFO L225 Difference]: With dead ends: 131 [2022-11-16 11:41:47,380 INFO L226 Difference]: Without dead ends: 103 [2022-11-16 11:41:47,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:41:47,381 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 56 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:47,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 291 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-16 11:41:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2022-11-16 11:41:47,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 83 states have (on average 1.2289156626506024) internal successors, (102), 84 states have internal predecessors, (102), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 11:41:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2022-11-16 11:41:47,396 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 62 [2022-11-16 11:41:47,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:47,397 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2022-11-16 11:41:47,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 11:41:47,397 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2022-11-16 11:41:47,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:41:47,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:47,400 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:47,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-11-16 11:41:47,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:47,614 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:47,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1705601977, now seen corresponding path program 1 times [2022-11-16 11:41:47,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:47,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925609936] [2022-11-16 11:41:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:47,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:47,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:47,616 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:47,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 11:41:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:47,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:41:47,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:41:47,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:41:47,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:47,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925609936] [2022-11-16 11:41:47,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925609936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:41:47,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:41:47,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:41:47,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894985753] [2022-11-16 11:41:47,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:47,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:41:47,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:47,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:41:47,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:47,902 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:41:48,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:48,019 INFO L93 Difference]: Finished difference Result 182 states and 228 transitions. [2022-11-16 11:41:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:41:48,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-11-16 11:41:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:48,022 INFO L225 Difference]: With dead ends: 182 [2022-11-16 11:41:48,022 INFO L226 Difference]: Without dead ends: 115 [2022-11-16 11:41:48,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:41:48,024 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 5 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:48,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 133 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:41:48,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-16 11:41:48,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2022-11-16 11:41:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 96 states have internal predecessors, (109), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 11:41:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2022-11-16 11:41:48,035 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 63 [2022-11-16 11:41:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:48,035 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2022-11-16 11:41:48,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:41:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2022-11-16 11:41:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:41:48,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:48,037 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:48,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:48,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:48,260 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:48,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:48,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1560006021, now seen corresponding path program 1 times [2022-11-16 11:41:48,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:48,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624864773] [2022-11-16 11:41:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:48,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:48,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:48,262 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:48,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 11:41:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:48,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:41:48,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:41:49,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:41:49,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:49,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624864773] [2022-11-16 11:41:49,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624864773] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:49,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:41:49,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-16 11:41:49,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237588808] [2022-11-16 11:41:49,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:49,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:41:49,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:49,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:41:49,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:41:49,486 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:41:51,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:41:51,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:51,823 INFO L93 Difference]: Finished difference Result 164 states and 194 transitions. [2022-11-16 11:41:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:41:51,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-11-16 11:41:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:51,825 INFO L225 Difference]: With dead ends: 164 [2022-11-16 11:41:51,825 INFO L226 Difference]: Without dead ends: 128 [2022-11-16 11:41:51,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:41:51,826 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 12 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:51,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 258 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 11:41:51,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-16 11:41:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 115. [2022-11-16 11:41:51,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 98 states have internal predecessors, (111), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 11:41:51,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2022-11-16 11:41:51,840 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 63 [2022-11-16 11:41:51,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:51,840 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2022-11-16 11:41:51,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-16 11:41:51,841 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2022-11-16 11:41:51,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:41:51,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:51,842 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:51,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-16 11:41:52,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:52,061 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:52,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1497966407, now seen corresponding path program 1 times [2022-11-16 11:41:52,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:52,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182710964] [2022-11-16 11:41:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:52,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:52,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:52,064 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:52,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 11:41:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:52,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:41:52,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:41:52,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:41:53,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:53,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182710964] [2022-11-16 11:41:53,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182710964] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:53,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:41:53,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 14 [2022-11-16 11:41:53,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779573420] [2022-11-16 11:41:53,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:53,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:41:53,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:53,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:41:53,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:41:53,017 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:41:53,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:53,671 INFO L93 Difference]: Finished difference Result 220 states and 261 transitions. [2022-11-16 11:41:53,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:41:53,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-16 11:41:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:53,673 INFO L225 Difference]: With dead ends: 220 [2022-11-16 11:41:53,673 INFO L226 Difference]: Without dead ends: 165 [2022-11-16 11:41:53,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:41:53,674 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 126 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:53,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 351 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:41:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-16 11:41:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 121. [2022-11-16 11:41:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 103 states have internal predecessors, (117), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 11:41:53,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 143 transitions. [2022-11-16 11:41:53,687 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 143 transitions. Word has length 63 [2022-11-16 11:41:53,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:53,687 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 143 transitions. [2022-11-16 11:41:53,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:41:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 143 transitions. [2022-11-16 11:41:53,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:41:53,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:53,689 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:53,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-16 11:41:53,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:53,902 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:53,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:53,902 INFO L85 PathProgramCache]: Analyzing trace with hash 395834293, now seen corresponding path program 1 times [2022-11-16 11:41:53,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:53,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584803369] [2022-11-16 11:41:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:53,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:53,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:53,904 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:53,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 11:41:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:54,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:41:54,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:41:54,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:41:55,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:55,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584803369] [2022-11-16 11:41:55,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584803369] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:55,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:41:55,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 17 [2022-11-16 11:41:55,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315519030] [2022-11-16 11:41:55,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:55,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:41:55,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:55,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:41:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:41:55,510 INFO L87 Difference]: Start difference. First operand 121 states and 143 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:41:56,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:56,423 INFO L93 Difference]: Finished difference Result 221 states and 262 transitions. [2022-11-16 11:41:56,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:41:56,425 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-16 11:41:56,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:56,426 INFO L225 Difference]: With dead ends: 221 [2022-11-16 11:41:56,426 INFO L226 Difference]: Without dead ends: 150 [2022-11-16 11:41:56,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:41:56,427 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 161 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:56,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 356 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:41:56,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-16 11:41:56,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 115. [2022-11-16 11:41:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 97 states have internal predecessors, (110), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 11:41:56,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2022-11-16 11:41:56,448 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 63 [2022-11-16 11:41:56,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:56,448 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2022-11-16 11:41:56,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:41:56,449 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2022-11-16 11:41:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:41:56,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:56,450 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:56,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:56,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:56,665 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:56,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1467507, now seen corresponding path program 1 times [2022-11-16 11:41:56,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:56,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849629803] [2022-11-16 11:41:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:56,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:56,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:56,668 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:56,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 11:41:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:41:56,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:41:56,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:41:57,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:41:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:41:58,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:41:58,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849629803] [2022-11-16 11:41:58,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849629803] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:41:58,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:41:58,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 18 [2022-11-16 11:41:58,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267433899] [2022-11-16 11:41:58,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:41:58,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:41:58,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:41:58,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:41:58,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:41:58,509 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:41:59,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:59,708 INFO L93 Difference]: Finished difference Result 197 states and 234 transitions. [2022-11-16 11:41:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:41:59,709 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-16 11:41:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:59,711 INFO L225 Difference]: With dead ends: 197 [2022-11-16 11:41:59,711 INFO L226 Difference]: Without dead ends: 148 [2022-11-16 11:41:59,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:41:59,713 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 118 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:59,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 508 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:41:59,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-16 11:41:59,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 117. [2022-11-16 11:41:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 98 states have (on average 1.1428571428571428) internal successors, (112), 99 states have internal predecessors, (112), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 11:41:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions. [2022-11-16 11:41:59,734 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 63 [2022-11-16 11:41:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:59,735 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions. [2022-11-16 11:41:59,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:41:59,735 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions. [2022-11-16 11:41:59,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:41:59,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:59,737 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:59,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:41:59,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:59,950 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:41:59,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:59,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2052451505, now seen corresponding path program 1 times [2022-11-16 11:41:59,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:59,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18294905] [2022-11-16 11:41:59,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:41:59,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:59,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:59,952 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:59,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 11:42:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:00,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:42:00,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:42:00,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:42:01,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:42:01,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18294905] [2022-11-16 11:42:01,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18294905] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:42:01,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:42:01,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2022-11-16 11:42:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656171982] [2022-11-16 11:42:01,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:01,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:42:01,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:42:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:42:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:42:01,317 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:42:02,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:02,034 INFO L93 Difference]: Finished difference Result 193 states and 229 transitions. [2022-11-16 11:42:02,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:42:02,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-16 11:42:02,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:02,037 INFO L225 Difference]: With dead ends: 193 [2022-11-16 11:42:02,037 INFO L226 Difference]: Without dead ends: 146 [2022-11-16 11:42:02,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:42:02,038 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 198 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:02,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 336 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:42:02,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-16 11:42:02,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2022-11-16 11:42:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 100 states have (on average 1.14) internal successors, (114), 101 states have internal predecessors, (114), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 11:42:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2022-11-16 11:42:02,061 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 63 [2022-11-16 11:42:02,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:02,062 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2022-11-16 11:42:02,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:42:02,063 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2022-11-16 11:42:02,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:42:02,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:02,064 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:02,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:42:02,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:02,282 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:02,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1967756177, now seen corresponding path program 1 times [2022-11-16 11:42:02,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:42:02,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375765473] [2022-11-16 11:42:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:02,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:02,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:42:02,285 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:42:02,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 11:42:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:02,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:42:02,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:42:03,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:42:03,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:42:03,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375765473] [2022-11-16 11:42:03,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375765473] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:42:03,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:42:03,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2022-11-16 11:42:03,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480956486] [2022-11-16 11:42:03,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:03,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:42:03,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:42:03,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:42:03,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:42:03,578 INFO L87 Difference]: Start difference. First operand 119 states and 140 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:42:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:04,308 INFO L93 Difference]: Finished difference Result 189 states and 224 transitions. [2022-11-16 11:42:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:42:04,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-16 11:42:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:04,310 INFO L225 Difference]: With dead ends: 189 [2022-11-16 11:42:04,310 INFO L226 Difference]: Without dead ends: 144 [2022-11-16 11:42:04,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:42:04,312 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 128 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:04,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 415 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:42:04,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-16 11:42:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 121. [2022-11-16 11:42:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 102 states have (on average 1.1372549019607843) internal successors, (116), 103 states have internal predecessors, (116), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 11:42:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2022-11-16 11:42:04,336 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 63 [2022-11-16 11:42:04,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:04,336 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2022-11-16 11:42:04,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:42:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2022-11-16 11:42:04,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:42:04,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:04,338 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:04,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:42:04,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:04,550 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:04,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:04,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1945123923, now seen corresponding path program 1 times [2022-11-16 11:42:04,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:42:04,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272938678] [2022-11-16 11:42:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:04,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:04,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:42:04,552 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:42:04,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 11:42:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:04,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:42:04,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:42:05,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:42:06,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:42:06,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272938678] [2022-11-16 11:42:06,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272938678] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:42:06,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:42:06,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 18 [2022-11-16 11:42:06,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994912149] [2022-11-16 11:42:06,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:06,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:42:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:42:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:42:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:42:06,030 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:42:06,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:06,864 INFO L93 Difference]: Finished difference Result 186 states and 220 transitions. [2022-11-16 11:42:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:42:06,865 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2022-11-16 11:42:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:06,866 INFO L225 Difference]: With dead ends: 186 [2022-11-16 11:42:06,866 INFO L226 Difference]: Without dead ends: 143 [2022-11-16 11:42:06,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:42:06,868 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 159 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:06,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 425 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 11:42:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-16 11:42:06,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 123. [2022-11-16 11:42:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 104 states have (on average 1.1346153846153846) internal successors, (118), 105 states have internal predecessors, (118), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 11:42:06,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2022-11-16 11:42:06,920 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 63 [2022-11-16 11:42:06,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:06,921 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2022-11-16 11:42:06,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:42:06,921 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2022-11-16 11:42:06,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:42:06,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:06,922 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:06,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:42:07,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:07,139 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:07,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:07,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1840370283, now seen corresponding path program 1 times [2022-11-16 11:42:07,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:42:07,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235734402] [2022-11-16 11:42:07,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:07,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:07,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:42:07,142 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:42:07,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 11:42:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:07,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:42:07,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:42:07,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:42:07,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:42:07,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235734402] [2022-11-16 11:42:07,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235734402] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:42:07,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:42:07,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-16 11:42:07,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270180118] [2022-11-16 11:42:07,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:07,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:42:07,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:42:07,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:42:07,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:42:07,896 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 11:42:10,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:42:11,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:11,507 INFO L93 Difference]: Finished difference Result 190 states and 228 transitions. [2022-11-16 11:42:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:42:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2022-11-16 11:42:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:11,509 INFO L225 Difference]: With dead ends: 190 [2022-11-16 11:42:11,510 INFO L226 Difference]: Without dead ends: 154 [2022-11-16 11:42:11,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:42:11,511 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 105 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:11,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 482 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 77 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 11:42:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-16 11:42:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 125. [2022-11-16 11:42:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 106 states have (on average 1.1415094339622642) internal successors, (121), 107 states have internal predecessors, (121), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 11:42:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2022-11-16 11:42:11,535 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 63 [2022-11-16 11:42:11,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:11,536 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2022-11-16 11:42:11,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 11:42:11,536 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2022-11-16 11:42:11,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:42:11,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:11,537 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:11,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:42:11,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:11,753 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1435540623, now seen corresponding path program 1 times [2022-11-16 11:42:11,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:42:11,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715498849] [2022-11-16 11:42:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:11,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:11,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:42:11,756 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:42:11,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 11:42:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:12,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:42:12,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:12,598 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:42:12,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 11:42:12,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:42:12,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715498849] [2022-11-16 11:42:12,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715498849] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:42:12,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:42:12,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-11-16 11:42:12,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239751415] [2022-11-16 11:42:12,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:42:12,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:42:12,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:42:12,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:42:12,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:42:12,998 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:42:15,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:42:15,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:15,599 INFO L93 Difference]: Finished difference Result 169 states and 195 transitions. [2022-11-16 11:42:15,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:42:15,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 65 [2022-11-16 11:42:15,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:15,601 INFO L225 Difference]: With dead ends: 169 [2022-11-16 11:42:15,602 INFO L226 Difference]: Without dead ends: 108 [2022-11-16 11:42:15,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:42:15,603 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 125 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:15,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 294 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 11:42:15,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-16 11:42:15,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2022-11-16 11:42:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 89 states have internal predecessors, (101), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 11:42:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2022-11-16 11:42:15,627 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 65 [2022-11-16 11:42:15,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:15,628 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2022-11-16 11:42:15,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:42:15,628 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2022-11-16 11:42:15,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:42:15,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:15,629 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:15,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 11:42:15,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:15,850 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:15,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:15,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1286455351, now seen corresponding path program 1 times [2022-11-16 11:42:15,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:42:15,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131005917] [2022-11-16 11:42:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:15,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:15,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:42:15,852 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:42:15,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 11:42:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:16,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:42:16,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:42:16,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:42:17,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:42:17,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131005917] [2022-11-16 11:42:17,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131005917] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:42:17,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:42:17,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2022-11-16 11:42:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022925246] [2022-11-16 11:42:17,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:42:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:42:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:42:17,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:42:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:42:17,007 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:42:18,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:18,829 INFO L93 Difference]: Finished difference Result 262 states and 319 transitions. [2022-11-16 11:42:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 11:42:18,830 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 65 [2022-11-16 11:42:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:18,832 INFO L225 Difference]: With dead ends: 262 [2022-11-16 11:42:18,832 INFO L226 Difference]: Without dead ends: 207 [2022-11-16 11:42:18,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:42:18,834 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 211 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:18,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 911 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 341 Invalid, 0 Unknown, 46 Unchecked, 1.0s Time] [2022-11-16 11:42:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-16 11:42:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 117. [2022-11-16 11:42:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 98 states have (on average 1.163265306122449) internal successors, (114), 99 states have internal predecessors, (114), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-16 11:42:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2022-11-16 11:42:18,864 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 65 [2022-11-16 11:42:18,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:18,865 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2022-11-16 11:42:18,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 15 states have internal predecessors, (61), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:42:18,865 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2022-11-16 11:42:18,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:42:18,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:18,867 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:18,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:42:19,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:19,084 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:19,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1114711245, now seen corresponding path program 1 times [2022-11-16 11:42:19,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:42:19,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871601159] [2022-11-16 11:42:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:19,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:19,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:42:19,087 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:42:19,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-16 11:42:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:19,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:42:19,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:42:20,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:42:20,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:42:20,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871601159] [2022-11-16 11:42:20,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871601159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:42:20,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:42:20,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2022-11-16 11:42:20,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991503208] [2022-11-16 11:42:20,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:42:20,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:42:20,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:42:20,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:42:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:42:20,871 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:42:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:23,113 INFO L93 Difference]: Finished difference Result 256 states and 311 transitions. [2022-11-16 11:42:23,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:42:23,117 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 65 [2022-11-16 11:42:23,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:23,119 INFO L225 Difference]: With dead ends: 256 [2022-11-16 11:42:23,119 INFO L226 Difference]: Without dead ends: 203 [2022-11-16 11:42:23,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=224, Invalid=768, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:42:23,121 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 340 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:23,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 760 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 397 Invalid, 0 Unknown, 36 Unchecked, 1.1s Time] [2022-11-16 11:42:23,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-16 11:42:23,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 128. [2022-11-16 11:42:23,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 108 states have (on average 1.1574074074074074) internal successors, (125), 109 states have internal predecessors, (125), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:42:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 153 transitions. [2022-11-16 11:42:23,151 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 153 transitions. Word has length 65 [2022-11-16 11:42:23,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:23,151 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 153 transitions. [2022-11-16 11:42:23,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:42:23,152 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2022-11-16 11:42:23,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:42:23,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:23,153 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:23,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-16 11:42:23,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:23,356 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1509078031, now seen corresponding path program 1 times [2022-11-16 11:42:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:42:23,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188691357] [2022-11-16 11:42:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:23,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:23,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:42:23,358 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:42:23,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 11:42:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:23,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:42:23,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:42:24,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:42:25,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:42:25,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188691357] [2022-11-16 11:42:25,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188691357] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:42:25,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:42:25,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2022-11-16 11:42:25,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796994361] [2022-11-16 11:42:25,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:42:25,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:42:25,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:42:25,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:42:25,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:42:25,517 INFO L87 Difference]: Start difference. First operand 128 states and 153 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 19 states have internal predecessors, (67), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:42:27,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:27,244 INFO L93 Difference]: Finished difference Result 184 states and 215 transitions. [2022-11-16 11:42:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:42:27,245 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 19 states have internal predecessors, (67), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 65 [2022-11-16 11:42:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:27,246 INFO L225 Difference]: With dead ends: 184 [2022-11-16 11:42:27,246 INFO L226 Difference]: Without dead ends: 135 [2022-11-16 11:42:27,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2022-11-16 11:42:27,248 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 96 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:27,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 567 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 246 Invalid, 0 Unknown, 57 Unchecked, 0.7s Time] [2022-11-16 11:42:27,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-16 11:42:27,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 130. [2022-11-16 11:42:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 11:42:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 155 transitions. [2022-11-16 11:42:27,271 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 155 transitions. Word has length 65 [2022-11-16 11:42:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:27,271 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 155 transitions. [2022-11-16 11:42:27,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 19 states have internal predecessors, (67), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:42:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 155 transitions. [2022-11-16 11:42:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:42:27,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:27,273 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:27,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-16 11:42:27,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:27,486 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:27,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:27,486 INFO L85 PathProgramCache]: Analyzing trace with hash 541905967, now seen corresponding path program 1 times [2022-11-16 11:42:27,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:42:27,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828944878] [2022-11-16 11:42:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:27,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:27,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:42:27,488 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:42:27,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 11:42:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:27,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:42:27,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:42:28,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:42:29,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:42:29,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828944878] [2022-11-16 11:42:29,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828944878] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:42:29,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:42:29,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2022-11-16 11:42:29,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631702521] [2022-11-16 11:42:29,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:42:29,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:42:29,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:42:29,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:42:29,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:42:29,139 INFO L87 Difference]: Start difference. First operand 130 states and 155 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:42:31,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:31,456 INFO L93 Difference]: Finished difference Result 257 states and 308 transitions. [2022-11-16 11:42:31,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:42:31,457 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 65 [2022-11-16 11:42:31,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:31,458 INFO L225 Difference]: With dead ends: 257 [2022-11-16 11:42:31,458 INFO L226 Difference]: Without dead ends: 210 [2022-11-16 11:42:31,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2022-11-16 11:42:31,460 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 168 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:31,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1293 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 548 Invalid, 0 Unknown, 120 Unchecked, 1.5s Time] [2022-11-16 11:42:31,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-16 11:42:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 143. [2022-11-16 11:42:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 122 states have (on average 1.139344262295082) internal successors, (139), 123 states have internal predecessors, (139), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 11:42:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 169 transitions. [2022-11-16 11:42:31,505 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 169 transitions. Word has length 65 [2022-11-16 11:42:31,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:31,505 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 169 transitions. [2022-11-16 11:42:31,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:42:31,505 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 169 transitions. [2022-11-16 11:42:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:42:31,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:31,507 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:31,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-16 11:42:31,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:31,722 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:31,722 INFO L85 PathProgramCache]: Analyzing trace with hash 816665581, now seen corresponding path program 1 times [2022-11-16 11:42:31,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:42:31,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658730246] [2022-11-16 11:42:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:31,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:31,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:42:31,726 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:42:31,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 11:42:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:31,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:42:31,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:42:32,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:42:33,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:42:33,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658730246] [2022-11-16 11:42:33,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658730246] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:42:33,373 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:42:33,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2022-11-16 11:42:33,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248720160] [2022-11-16 11:42:33,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:42:33,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:42:33,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:42:33,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:42:33,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:42:33,376 INFO L87 Difference]: Start difference. First operand 143 states and 169 transitions. Second operand has 20 states, 20 states have (on average 3.55) internal successors, (71), 19 states have internal predecessors, (71), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:42:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:42:34,783 INFO L93 Difference]: Finished difference Result 229 states and 269 transitions. [2022-11-16 11:42:34,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:42:34,785 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 19 states have internal predecessors, (71), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 65 [2022-11-16 11:42:34,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:42:34,786 INFO L225 Difference]: With dead ends: 229 [2022-11-16 11:42:34,786 INFO L226 Difference]: Without dead ends: 184 [2022-11-16 11:42:34,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:42:34,787 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 132 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:42:34,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 781 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 303 Invalid, 0 Unknown, 23 Unchecked, 0.9s Time] [2022-11-16 11:42:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-16 11:42:34,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 151. [2022-11-16 11:42:34,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 130 states have (on average 1.1307692307692307) internal successors, (147), 131 states have internal predecessors, (147), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-16 11:42:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 177 transitions. [2022-11-16 11:42:34,815 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 177 transitions. Word has length 65 [2022-11-16 11:42:34,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:42:34,815 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 177 transitions. [2022-11-16 11:42:34,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 19 states have internal predecessors, (71), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:42:34,816 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 177 transitions. [2022-11-16 11:42:34,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:42:34,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:42:34,817 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:42:34,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-16 11:42:35,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:35,032 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:42:35,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:42:35,032 INFO L85 PathProgramCache]: Analyzing trace with hash 839297835, now seen corresponding path program 1 times [2022-11-16 11:42:35,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:42:35,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22110161] [2022-11-16 11:42:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:35,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:42:35,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:42:35,034 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:42:35,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 11:42:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:35,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-16 11:42:35,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:35,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:42:35,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-16 11:42:38,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:42:41,150 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2| (_ BitVec 64)) (|ULTIMATE.start_memset_using_uint64_impl_~c#1| (_ BitVec 32)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2| (_ BitVec 64))) (let ((.cse0 ((_ extract 7 0) |ULTIMATE.start_memset_using_uint64_impl_~c#1|))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2|) (_ bv0 64))) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2|) (_ bv0 64)) .cse0) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2|))))) is different from true [2022-11-16 11:42:43,461 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3| (_ BitVec 64)) (|ULTIMATE.start_memset_using_uint64_impl_~c#1| (_ BitVec 32)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3| (_ BitVec 64))) (let ((.cse0 ((_ extract 7 0) |ULTIMATE.start_memset_using_uint64_impl_~c#1|))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3|) (_ bv0 64))) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3|)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3|) (_ bv0 64)))))) is different from true [2022-11-16 11:42:45,849 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4| (_ BitVec 64)) (|ULTIMATE.start_memset_using_uint64_impl_~c#1| (_ BitVec 32)) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4| (_ BitVec 64))) (let ((.cse0 ((_ extract 7 0) |ULTIMATE.start_memset_using_uint64_impl_~c#1|))) (and (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4|) (_ bv0 64))) (not (= |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4|)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|) (_ bv0 64)))))) is different from true [2022-11-16 11:42:54,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:42:54,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-16 11:42:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 2 not checked. [2022-11-16 11:42:55,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:56,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:42:56,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22110161] [2022-11-16 11:42:56,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22110161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:42:56,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [279012521] [2022-11-16 11:42:56,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:42:56,700 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:42:56,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:42:56,701 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:42:56,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-16 11:42:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:42:57,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 11:42:57,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:42:57,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:42:58,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:42:58,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 11:43:11,085 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:43:11,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 11:44:21,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:44:21,807 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:44:21,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 18 [2022-11-16 11:44:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:44:22,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:44:22,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [279012521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:44:22,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:44:22,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20] total 43 [2022-11-16 11:44:22,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504036647] [2022-11-16 11:44:22,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:44:22,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-16 11:44:22,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:44:22,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-16 11:44:22,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1704, Unknown=18, NotChecked=258, Total=2162 [2022-11-16 11:44:22,176 INFO L87 Difference]: Start difference. First operand 151 states and 177 transitions. Second operand has 43 states, 40 states have (on average 2.375) internal successors, (95), 38 states have internal predecessors, (95), 10 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-16 11:45:46,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:46:22,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:46:24,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:46:26,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:46:28,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:46:34,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:34,911 INFO L93 Difference]: Finished difference Result 330 states and 394 transitions. [2022-11-16 11:46:34,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 11:46:34,912 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 2.375) internal successors, (95), 38 states have internal predecessors, (95), 10 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) Word has length 65 [2022-11-16 11:46:34,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:34,916 INFO L225 Difference]: With dead ends: 330 [2022-11-16 11:46:34,916 INFO L226 Difference]: Without dead ends: 277 [2022-11-16 11:46:34,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 92 SyntacticMatches, 15 SemanticMatches, 69 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 208.9s TimeCoverageRelationStatistics Valid=465, Invalid=4047, Unknown=56, NotChecked=402, Total=4970 [2022-11-16 11:46:34,919 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 513 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 88 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 1357 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:34,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 1771 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1149 Invalid, 5 Unknown, 1357 Unchecked, 25.1s Time] [2022-11-16 11:46:34,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-16 11:46:34,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 215. [2022-11-16 11:46:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 176 states have (on average 1.1363636363636365) internal successors, (200), 179 states have internal predecessors, (200), 26 states have call successors, (26), 14 states have call predecessors, (26), 12 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-16 11:46:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 249 transitions. [2022-11-16 11:46:34,978 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 249 transitions. Word has length 65 [2022-11-16 11:46:34,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:34,978 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 249 transitions. [2022-11-16 11:46:34,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 2.375) internal successors, (95), 38 states have internal predecessors, (95), 10 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-16 11:46:34,979 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 249 transitions. [2022-11-16 11:46:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:46:34,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:34,981 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:35,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:35,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:35,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:46:35,394 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:35,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:35,395 INFO L85 PathProgramCache]: Analyzing trace with hash 329824745, now seen corresponding path program 1 times [2022-11-16 11:46:35,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:46:35,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240956562] [2022-11-16 11:46:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:35,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:35,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:46:35,396 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:46:35,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-16 11:46:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:35,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:46:35,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:36,521 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:46:36,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:46:37,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:46:37,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240956562] [2022-11-16 11:46:37,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240956562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:46:37,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:46:37,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2022-11-16 11:46:37,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369094416] [2022-11-16 11:46:37,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:46:37,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:46:37,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:46:37,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:46:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:46:37,582 INFO L87 Difference]: Start difference. First operand 215 states and 249 transitions. Second operand has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 20 states have internal predecessors, (78), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:46:40,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:46:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:55,027 INFO L93 Difference]: Finished difference Result 292 states and 341 transitions. [2022-11-16 11:46:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:46:55,028 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 20 states have internal predecessors, (78), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 65 [2022-11-16 11:46:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:55,029 INFO L225 Difference]: With dead ends: 292 [2022-11-16 11:46:55,030 INFO L226 Difference]: Without dead ends: 222 [2022-11-16 11:46:55,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:46:55,031 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 100 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:55,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1142 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 526 Invalid, 1 Unknown, 120 Unchecked, 16.7s Time] [2022-11-16 11:46:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-16 11:46:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 189. [2022-11-16 11:46:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 158 states have (on average 1.120253164556962) internal successors, (177), 160 states have internal predecessors, (177), 20 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 11:46:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 215 transitions. [2022-11-16 11:46:55,078 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 215 transitions. Word has length 65 [2022-11-16 11:46:55,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:55,078 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 215 transitions. [2022-11-16 11:46:55,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 20 states have internal predecessors, (78), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:46:55,078 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 215 transitions. [2022-11-16 11:46:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 11:46:55,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:55,080 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:55,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:55,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:55,280 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:55,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:55,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1592252509, now seen corresponding path program 1 times [2022-11-16 11:46:55,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:46:55,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101354085] [2022-11-16 11:46:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:55,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:55,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:46:55,282 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:46:55,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-16 11:46:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:55,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:46:55,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:46:55,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:46:56,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:46:56,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101354085] [2022-11-16 11:46:56,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101354085] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:56,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:46:56,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2022-11-16 11:46:56,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548855272] [2022-11-16 11:46:56,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:56,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:46:56,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:46:56,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:46:56,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:46:56,307 INFO L87 Difference]: Start difference. First operand 189 states and 215 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:46:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:56,548 INFO L93 Difference]: Finished difference Result 211 states and 236 transitions. [2022-11-16 11:46:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:46:56,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 66 [2022-11-16 11:46:56,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:56,550 INFO L225 Difference]: With dead ends: 211 [2022-11-16 11:46:56,550 INFO L226 Difference]: Without dead ends: 164 [2022-11-16 11:46:56,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:46:56,552 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 68 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:56,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 306 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:46:56,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-16 11:46:56,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-16 11:46:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 135 states have (on average 1.1333333333333333) internal successors, (153), 137 states have internal predecessors, (153), 18 states have call successors, (18), 11 states have call predecessors, (18), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 11:46:56,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 187 transitions. [2022-11-16 11:46:56,593 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 187 transitions. Word has length 66 [2022-11-16 11:46:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:56,594 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 187 transitions. [2022-11-16 11:46:56,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:46:56,594 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 187 transitions. [2022-11-16 11:46:56,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:46:56,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:56,595 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:56,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:56,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:56,802 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:56,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:56,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1477592399, now seen corresponding path program 1 times [2022-11-16 11:46:56,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:46:56,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244623432] [2022-11-16 11:46:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:56,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:56,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:46:56,804 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:46:56,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-16 11:46:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:57,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:46:57,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:46:57,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:46:58,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:46:58,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244623432] [2022-11-16 11:46:58,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244623432] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:46:58,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:46:58,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-16 11:46:58,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387601354] [2022-11-16 11:46:58,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:46:58,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:46:58,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:46:58,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:46:58,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:46:58,860 INFO L87 Difference]: Start difference. First operand 164 states and 187 transitions. Second operand has 20 states, 20 states have (on average 4.1) internal successors, (82), 19 states have internal predecessors, (82), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:47:02,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:47:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:11,524 INFO L93 Difference]: Finished difference Result 263 states and 313 transitions. [2022-11-16 11:47:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:47:11,525 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.1) internal successors, (82), 19 states have internal predecessors, (82), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 67 [2022-11-16 11:47:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:11,526 INFO L225 Difference]: With dead ends: 263 [2022-11-16 11:47:11,527 INFO L226 Difference]: Without dead ends: 223 [2022-11-16 11:47:11,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:47:11,528 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 323 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:11,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1483 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 392 Invalid, 1 Unknown, 63 Unchecked, 11.3s Time] [2022-11-16 11:47:11,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-16 11:47:11,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 179. [2022-11-16 11:47:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 150 states have (on average 1.14) internal successors, (171), 152 states have internal predecessors, (171), 18 states have call successors, (18), 11 states have call predecessors, (18), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 11:47:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 205 transitions. [2022-11-16 11:47:11,603 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 205 transitions. Word has length 67 [2022-11-16 11:47:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:11,603 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 205 transitions. [2022-11-16 11:47:11,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.1) internal successors, (82), 19 states have internal predecessors, (82), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:47:11,604 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 205 transitions. [2022-11-16 11:47:11,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:47:11,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:11,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:11,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:11,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:47:11,823 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash 968119309, now seen corresponding path program 1 times [2022-11-16 11:47:11,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:47:11,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118466360] [2022-11-16 11:47:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:11,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:47:11,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:47:11,824 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:47:11,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-16 11:47:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:12,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:47:12,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:47:12,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:47:14,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:47:14,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118466360] [2022-11-16 11:47:14,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118466360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:47:14,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:47:14,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2022-11-16 11:47:14,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584434950] [2022-11-16 11:47:14,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:14,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:47:14,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:47:14,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:47:14,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:47:14,233 INFO L87 Difference]: Start difference. First operand 179 states and 205 transitions. Second operand has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 20 states have internal predecessors, (82), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:47:17,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:47:27,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:47:28,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:47:31,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:31,771 INFO L93 Difference]: Finished difference Result 252 states and 296 transitions. [2022-11-16 11:47:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 11:47:31,773 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 20 states have internal predecessors, (82), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 67 [2022-11-16 11:47:31,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:31,774 INFO L225 Difference]: With dead ends: 252 [2022-11-16 11:47:31,774 INFO L226 Difference]: Without dead ends: 214 [2022-11-16 11:47:31,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=222, Invalid=900, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:47:31,776 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 466 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 68 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:31,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1263 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 398 Invalid, 2 Unknown, 77 Unchecked, 15.7s Time] [2022-11-16 11:47:31,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-16 11:47:31,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 181. [2022-11-16 11:47:31,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 152 states have (on average 1.138157894736842) internal successors, (173), 154 states have internal predecessors, (173), 18 states have call successors, (18), 11 states have call predecessors, (18), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 11:47:31,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 207 transitions. [2022-11-16 11:47:31,839 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 207 transitions. Word has length 67 [2022-11-16 11:47:31,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:31,839 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 207 transitions. [2022-11-16 11:47:31,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 20 states have internal predecessors, (82), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:47:31,840 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 207 transitions. [2022-11-16 11:47:31,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 11:47:31,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:31,841 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:31,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:32,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:47:32,054 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:32,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:32,054 INFO L85 PathProgramCache]: Analyzing trace with hash 881349611, now seen corresponding path program 2 times [2022-11-16 11:47:32,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:47:32,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659747026] [2022-11-16 11:47:32,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:47:32,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:47:32,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:47:32,056 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:47:32,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-16 11:47:32,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:47:32,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:47:32,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 11:47:32,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:32,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:47:32,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-16 11:47:33,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:47:33,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:47:35,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:47:35,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2022-11-16 11:47:35,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:47:35,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:47:35,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-16 11:48:04,330 INFO L321 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-11-16 11:48:04,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 29 [2022-11-16 11:48:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:48:04,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:06,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:48:06,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659747026] [2022-11-16 11:48:06,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659747026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:06,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1391455467] [2022-11-16 11:48:06,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:48:06,414 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:48:06,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:48:06,423 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:48:06,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-16 11:48:07,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:48:07,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:48:07,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-16 11:48:07,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:07,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:48:10,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:48:10,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 11:48:10,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:48:10,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:48:10,654 INFO L321 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2022-11-16 11:48:10,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 36 [2022-11-16 11:48:23,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:48:23,457 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:48:23,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:48:23,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:48:23,502 INFO L321 Elim1Store]: treesize reduction 22, result has 33.3 percent of original size [2022-11-16 11:48:23,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 53 [2022-11-16 11:48:24,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:48:24,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:48:24,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:48:24,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:48:24,951 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 11:48:24,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 63 [2022-11-16 11:48:43,444 INFO L321 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2022-11-16 11:48:43,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 55 [2022-11-16 11:48:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:48:43,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:43,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1391455467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:43,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:48:43,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23] total 48 [2022-11-16 11:48:43,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459949110] [2022-11-16 11:48:43,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:43,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 11:48:43,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:48:43,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 11:48:43,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2417, Unknown=3, NotChecked=0, Total=2652 [2022-11-16 11:48:43,825 INFO L87 Difference]: Start difference. First operand 181 states and 207 transitions. Second operand has 48 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 states have internal predecessors, (102), 10 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-16 11:49:14,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:14,739 INFO L93 Difference]: Finished difference Result 313 states and 355 transitions. [2022-11-16 11:49:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-16 11:49:14,741 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 states have internal predecessors, (102), 10 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) Word has length 67 [2022-11-16 11:49:14,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:14,743 INFO L225 Difference]: With dead ends: 313 [2022-11-16 11:49:14,743 INFO L226 Difference]: Without dead ends: 265 [2022-11-16 11:49:14,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 84 SyntacticMatches, 12 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 87.6s TimeCoverageRelationStatistics Valid=459, Invalid=5385, Unknown=8, NotChecked=0, Total=5852 [2022-11-16 11:49:14,746 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 206 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 265 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:14,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1189 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 771 Invalid, 0 Unknown, 265 Unchecked, 5.8s Time] [2022-11-16 11:49:14,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-16 11:49:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 203. [2022-11-16 11:49:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 172 states have (on average 1.1453488372093024) internal successors, (197), 174 states have internal predecessors, (197), 18 states have call successors, (18), 13 states have call predecessors, (18), 12 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 11:49:14,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 231 transitions. [2022-11-16 11:49:14,816 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 231 transitions. Word has length 67 [2022-11-16 11:49:14,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:14,817 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 231 transitions. [2022-11-16 11:49:14,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 2.2666666666666666) internal successors, (102), 44 states have internal predecessors, (102), 10 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-16 11:49:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 231 transitions. [2022-11-16 11:49:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:49:14,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:14,819 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:14,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:15,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:15,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:49:15,226 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:15,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:15,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1406489528, now seen corresponding path program 1 times [2022-11-16 11:49:15,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:49:15,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791651320] [2022-11-16 11:49:15,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:15,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:49:15,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:49:15,228 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:49:15,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-16 11:49:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:15,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:49:15,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:49:16,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:49:16,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:49:16,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791651320] [2022-11-16 11:49:16,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791651320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:16,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:16,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:49:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747115216] [2022-11-16 11:49:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:16,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:49:16,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:49:16,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:49:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:49:16,176 INFO L87 Difference]: Start difference. First operand 203 states and 231 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:49:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:17,075 INFO L93 Difference]: Finished difference Result 262 states and 303 transitions. [2022-11-16 11:49:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:49:17,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 69 [2022-11-16 11:49:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:17,078 INFO L225 Difference]: With dead ends: 262 [2022-11-16 11:49:17,078 INFO L226 Difference]: Without dead ends: 240 [2022-11-16 11:49:17,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:49:17,079 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 89 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:17,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 332 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 107 Invalid, 0 Unknown, 31 Unchecked, 0.4s Time] [2022-11-16 11:49:17,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-16 11:49:17,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 225. [2022-11-16 11:49:17,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 192 states have (on average 1.1510416666666667) internal successors, (221), 194 states have internal predecessors, (221), 20 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 11:49:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 259 transitions. [2022-11-16 11:49:17,157 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 259 transitions. Word has length 69 [2022-11-16 11:49:17,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:17,158 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 259 transitions. [2022-11-16 11:49:17,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:49:17,158 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 259 transitions. [2022-11-16 11:49:17,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:49:17,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:17,159 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:49:17,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-16 11:49:17,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:49:17,370 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:17,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1656566613, now seen corresponding path program 2 times [2022-11-16 11:49:17,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:49:17,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461360327] [2022-11-16 11:49:17,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:49:17,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:49:17,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:49:17,372 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:49:17,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-16 11:49:17,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:49:17,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:49:17,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-16 11:49:17,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:49:17,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:49:18,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-16 11:49:18,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-11-16 11:49:19,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 39 [2022-11-16 11:49:22,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:22,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:22,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2022-11-16 11:49:22,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:22,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:22,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 61 [2022-11-16 11:49:22,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:22,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:22,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:22,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:49:22,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 72 [2022-11-16 11:50:09,824 INFO L321 Elim1Store]: treesize reduction 42, result has 14.3 percent of original size [2022-11-16 11:50:09,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 37 [2022-11-16 11:50:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:50:10,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:50:12,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:50:12,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461360327] [2022-11-16 11:50:12,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461360327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:12,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1675639037] [2022-11-16 11:50:12,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:50:12,084 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:50:12,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:50:12,085 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:50:12,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-16 11:50:12,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:50:12,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:50:12,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-16 11:50:12,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:13,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:50:14,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:14,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 11:50:15,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:15,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:50:15,573 INFO L321 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2022-11-16 11:50:15,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 36 [2022-11-16 11:50:16,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:16,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:16,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:16,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:16,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:50:16,408 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:50:16,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 49 [2022-11-16 11:50:28,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:28,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:28,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:28,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:28,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:50:28,768 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 11:50:28,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 62 [2022-11-16 11:50:31,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:31,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:31,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:50:31,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:31,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:31,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:50:31,515 INFO L321 Elim1Store]: treesize reduction 22, result has 33.3 percent of original size [2022-11-16 11:50:31,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 79 [2022-11-16 11:50:34,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:34,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:34,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:34,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:34,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:50:34,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:50:34,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:50:34,304 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 11:50:34,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 89 [2022-11-16 11:50:56,807 INFO L321 Elim1Store]: treesize reduction 66, result has 25.8 percent of original size [2022-11-16 11:50:56,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 4 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 14 case distinctions, treesize of input 77 treesize of output 63 [2022-11-16 11:50:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:50:56,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:50:56,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1675639037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:56,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:50:56,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 26] total 54 [2022-11-16 11:50:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77682335] [2022-11-16 11:50:56,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:50:56,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-16 11:50:56,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:50:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-16 11:50:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=3045, Unknown=6, NotChecked=0, Total=3306 [2022-11-16 11:50:56,982 INFO L87 Difference]: Start difference. First operand 225 states and 259 transitions. Second operand has 54 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 50 states have internal predecessors, (106), 10 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-16 11:51:37,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:51:39,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:51:41,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:51:43,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:51:47,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:51:53,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:51:54,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:51:58,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:52:00,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:52:02,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:52:04,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:52:06,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:52:09,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:09,083 INFO L93 Difference]: Finished difference Result 313 states and 370 transitions. [2022-11-16 11:52:09,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-16 11:52:09,085 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 50 states have internal predecessors, (106), 10 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) Word has length 69 [2022-11-16 11:52:09,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:09,086 INFO L225 Difference]: With dead ends: 313 [2022-11-16 11:52:09,086 INFO L226 Difference]: Without dead ends: 311 [2022-11-16 11:52:09,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 85 SyntacticMatches, 11 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2630 ImplicationChecksByTransitivity, 123.2s TimeCoverageRelationStatistics Valid=572, Invalid=7072, Unknown=12, NotChecked=0, Total=7656 [2022-11-16 11:52:09,088 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 378 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 59 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 462 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:09,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1911 Invalid, 2305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1777 Invalid, 7 Unknown, 462 Unchecked, 38.1s Time] [2022-11-16 11:52:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-16 11:52:09,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 240. [2022-11-16 11:52:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 204 states have (on average 1.1519607843137254) internal successors, (235), 207 states have internal predecessors, (235), 21 states have call successors, (21), 15 states have call predecessors, (21), 14 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-16 11:52:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 275 transitions. [2022-11-16 11:52:09,203 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 275 transitions. Word has length 69 [2022-11-16 11:52:09,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:09,203 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 275 transitions. [2022-11-16 11:52:09,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 50 states have internal predecessors, (106), 10 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-16 11:52:09,204 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 275 transitions. [2022-11-16 11:52:09,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:52:09,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:09,205 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:09,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:09,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2022-11-16 11:52:09,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:52:09,618 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:09,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:09,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1359174745, now seen corresponding path program 2 times [2022-11-16 11:52:09,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:52:09,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257083514] [2022-11-16 11:52:09,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:52:09,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:52:09,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:52:09,620 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:52:09,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-16 11:52:09,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:52:09,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:52:09,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:52:09,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:52:10,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:52:12,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:52:12,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257083514] [2022-11-16 11:52:12,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257083514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:12,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:52:12,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2022-11-16 11:52:12,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993218555] [2022-11-16 11:52:12,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:12,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:52:12,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:52:12,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:52:12,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:52:12,402 INFO L87 Difference]: Start difference. First operand 240 states and 275 transitions. Second operand has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:52:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:17,088 INFO L93 Difference]: Finished difference Result 388 states and 467 transitions. [2022-11-16 11:52:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:52:17,090 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 69 [2022-11-16 11:52:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:17,092 INFO L225 Difference]: With dead ends: 388 [2022-11-16 11:52:17,092 INFO L226 Difference]: Without dead ends: 338 [2022-11-16 11:52:17,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=353, Invalid=1369, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 11:52:17,094 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 636 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:17,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1437 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 763 Invalid, 0 Unknown, 166 Unchecked, 2.5s Time] [2022-11-16 11:52:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-16 11:52:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 258. [2022-11-16 11:52:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 221 states have (on average 1.1719457013574661) internal successors, (259), 224 states have internal predecessors, (259), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:52:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 301 transitions. [2022-11-16 11:52:17,169 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 301 transitions. Word has length 69 [2022-11-16 11:52:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:17,169 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 301 transitions. [2022-11-16 11:52:17,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1153846153846154) internal successors, (81), 25 states have internal predecessors, (81), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:52:17,170 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 301 transitions. [2022-11-16 11:52:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:52:17,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:17,170 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:17,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:17,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:52:17,374 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:17,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1868647835, now seen corresponding path program 2 times [2022-11-16 11:52:17,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:52:17,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043715705] [2022-11-16 11:52:17,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:52:17,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:52:17,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:52:17,376 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:52:17,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-16 11:52:17,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:52:17,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:52:17,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:52:17,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:52:18,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:52:20,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:52:20,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043715705] [2022-11-16 11:52:20,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043715705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:20,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:52:20,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2022-11-16 11:52:20,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688387467] [2022-11-16 11:52:20,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:20,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:52:20,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:52:20,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:52:20,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:52:20,751 INFO L87 Difference]: Start difference. First operand 258 states and 301 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:52:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:26,682 INFO L93 Difference]: Finished difference Result 387 states and 461 transitions. [2022-11-16 11:52:26,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:52:26,683 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 69 [2022-11-16 11:52:26,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:26,685 INFO L225 Difference]: With dead ends: 387 [2022-11-16 11:52:26,685 INFO L226 Difference]: Without dead ends: 307 [2022-11-16 11:52:26,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 11:52:26,687 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 508 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:26,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1489 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 785 Invalid, 0 Unknown, 69 Unchecked, 3.5s Time] [2022-11-16 11:52:26,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-16 11:52:26,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 250. [2022-11-16 11:52:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 213 states have (on average 1.15962441314554) internal successors, (247), 216 states have internal predecessors, (247), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:52:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 289 transitions. [2022-11-16 11:52:26,759 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 289 transitions. Word has length 69 [2022-11-16 11:52:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:26,760 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 289 transitions. [2022-11-16 11:52:26,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:52:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 289 transitions. [2022-11-16 11:52:26,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 11:52:26,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:26,761 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:26,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-16 11:52:26,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:52:26,977 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:26,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2010422392, now seen corresponding path program 1 times [2022-11-16 11:52:26,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:52:26,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937350008] [2022-11-16 11:52:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:26,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:52:26,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:52:26,979 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:52:26,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-16 11:52:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:27,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:52:27,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:52:28,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:52:28,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:52:28,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937350008] [2022-11-16 11:52:28,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937350008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:28,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:28,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:52:28,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085613805] [2022-11-16 11:52:28,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:28,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:52:28,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:52:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:52:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:52:28,067 INFO L87 Difference]: Start difference. First operand 250 states and 289 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:52:29,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:29,127 INFO L93 Difference]: Finished difference Result 298 states and 346 transitions. [2022-11-16 11:52:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:52:29,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 71 [2022-11-16 11:52:29,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:29,129 INFO L225 Difference]: With dead ends: 298 [2022-11-16 11:52:29,130 INFO L226 Difference]: Without dead ends: 276 [2022-11-16 11:52:29,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:52:29,131 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 89 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:29,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 347 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 120 Invalid, 0 Unknown, 35 Unchecked, 0.5s Time] [2022-11-16 11:52:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-16 11:52:29,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 250. [2022-11-16 11:52:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 214 states have (on average 1.158878504672897) internal successors, (248), 216 states have internal predecessors, (248), 21 states have call successors, (21), 15 states have call predecessors, (21), 14 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-16 11:52:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 288 transitions. [2022-11-16 11:52:29,201 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 288 transitions. Word has length 71 [2022-11-16 11:52:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:29,201 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 288 transitions. [2022-11-16 11:52:29,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:52:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 288 transitions. [2022-11-16 11:52:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 11:52:29,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:29,203 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:29,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:29,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:52:29,419 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:29,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:29,419 INFO L85 PathProgramCache]: Analyzing trace with hash 792804849, now seen corresponding path program 1 times [2022-11-16 11:52:29,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:52:29,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64359745] [2022-11-16 11:52:29,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:29,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:52:29,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:52:29,421 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:52:29,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-16 11:52:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:29,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:52:29,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:52:30,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:52:32,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:52:32,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64359745] [2022-11-16 11:52:32,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64359745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:32,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:52:32,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2022-11-16 11:52:32,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853806137] [2022-11-16 11:52:32,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:32,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:52:32,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:52:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:52:32,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:52:32,648 INFO L87 Difference]: Start difference. First operand 250 states and 288 transitions. Second operand has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 22 states have internal predecessors, (88), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:52:38,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:52:44,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:52:55,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:53:02,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:53:11,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:53:13,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:53:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:16,159 INFO L93 Difference]: Finished difference Result 438 states and 533 transitions. [2022-11-16 11:53:16,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:53:16,160 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 22 states have internal predecessors, (88), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 71 [2022-11-16 11:53:16,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:16,162 INFO L225 Difference]: With dead ends: 438 [2022-11-16 11:53:16,163 INFO L226 Difference]: Without dead ends: 392 [2022-11-16 11:53:16,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=461, Invalid=1989, Unknown=0, NotChecked=0, Total=2450 [2022-11-16 11:53:16,164 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 592 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 109 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 38.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:16,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1283 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 594 Invalid, 1 Unknown, 108 Unchecked, 38.0s Time] [2022-11-16 11:53:16,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-16 11:53:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 297. [2022-11-16 11:53:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 260 states have (on average 1.1730769230769231) internal successors, (305), 262 states have internal predecessors, (305), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:53:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 347 transitions. [2022-11-16 11:53:16,257 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 347 transitions. Word has length 71 [2022-11-16 11:53:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:16,258 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 347 transitions. [2022-11-16 11:53:16,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.8260869565217392) internal successors, (88), 22 states have internal predecessors, (88), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:53:16,258 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 347 transitions. [2022-11-16 11:53:16,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 11:53:16,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:16,259 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:16,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:16,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:53:16,477 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:16,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash 815437103, now seen corresponding path program 1 times [2022-11-16 11:53:16,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:53:16,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617635798] [2022-11-16 11:53:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:16,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:53:16,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:53:16,479 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:53:16,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-16 11:53:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:16,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:53:16,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:53:17,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:53:19,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:53:19,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617635798] [2022-11-16 11:53:19,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617635798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:19,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:53:19,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2022-11-16 11:53:19,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563480167] [2022-11-16 11:53:19,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:19,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:53:19,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:53:19,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:53:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:53:19,135 INFO L87 Difference]: Start difference. First operand 297 states and 347 transitions. Second operand has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:53:23,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:53:28,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:28,723 INFO L93 Difference]: Finished difference Result 420 states and 505 transitions. [2022-11-16 11:53:28,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 11:53:28,725 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 71 [2022-11-16 11:53:28,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:28,727 INFO L225 Difference]: With dead ends: 420 [2022-11-16 11:53:28,727 INFO L226 Difference]: Without dead ends: 370 [2022-11-16 11:53:28,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=304, Invalid=1102, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 11:53:28,728 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 577 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 107 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:28,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1325 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 458 Invalid, 1 Unknown, 81 Unchecked, 7.4s Time] [2022-11-16 11:53:28,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-16 11:53:28,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 295. [2022-11-16 11:53:28,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 258 states have (on average 1.1666666666666667) internal successors, (301), 260 states have internal predecessors, (301), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 11:53:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 343 transitions. [2022-11-16 11:53:28,828 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 343 transitions. Word has length 71 [2022-11-16 11:53:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:28,828 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 343 transitions. [2022-11-16 11:53:28,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:53:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 343 transitions. [2022-11-16 11:53:28,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 11:53:28,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:28,829 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:28,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:29,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:53:29,030 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:29,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:29,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1742899633, now seen corresponding path program 2 times [2022-11-16 11:53:29,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:53:29,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062837639] [2022-11-16 11:53:29,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:53:29,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:53:29,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:53:29,032 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:53:29,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-16 11:53:29,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:53:29,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:53:29,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:53:29,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:53:30,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:53:31,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:53:31,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062837639] [2022-11-16 11:53:31,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062837639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:31,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:53:31,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 22 [2022-11-16 11:53:31,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79926718] [2022-11-16 11:53:31,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:31,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:53:31,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:53:31,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:53:31,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:53:31,309 INFO L87 Difference]: Start difference. First operand 295 states and 343 transitions. Second operand has 22 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:53:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:35,009 INFO L93 Difference]: Finished difference Result 527 states and 630 transitions. [2022-11-16 11:53:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 11:53:35,010 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 71 [2022-11-16 11:53:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:35,012 INFO L225 Difference]: With dead ends: 527 [2022-11-16 11:53:35,012 INFO L226 Difference]: Without dead ends: 449 [2022-11-16 11:53:35,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 11:53:35,013 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 507 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:35,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1469 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 664 Invalid, 0 Unknown, 102 Unchecked, 2.2s Time] [2022-11-16 11:53:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-16 11:53:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 298. [2022-11-16 11:53:35,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 260 states have (on average 1.1615384615384616) internal successors, (302), 262 states have internal predecessors, (302), 23 states have call successors, (23), 15 states have call predecessors, (23), 14 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-16 11:53:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 346 transitions. [2022-11-16 11:53:35,149 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 346 transitions. Word has length 71 [2022-11-16 11:53:35,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:35,149 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 346 transitions. [2022-11-16 11:53:35,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 21 states have internal predecessors, (73), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:53:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 346 transitions. [2022-11-16 11:53:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 11:53:35,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:35,151 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:35,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:35,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:53:35,368 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:35,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:35,368 INFO L85 PathProgramCache]: Analyzing trace with hash -658266963, now seen corresponding path program 2 times [2022-11-16 11:53:35,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:53:35,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148815628] [2022-11-16 11:53:35,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:53:35,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:53:35,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:53:35,370 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:53:35,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-16 11:53:35,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:53:35,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:53:35,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:53:35,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:53:36,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:53:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:53:38,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:53:38,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148815628] [2022-11-16 11:53:38,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148815628] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:53:38,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:53:38,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2022-11-16 11:53:38,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881772333] [2022-11-16 11:53:38,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:53:38,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:53:38,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:53:38,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:53:38,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:53:38,283 INFO L87 Difference]: Start difference. First operand 298 states and 346 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:53:41,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:53:41,351 INFO L93 Difference]: Finished difference Result 442 states and 521 transitions. [2022-11-16 11:53:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 11:53:41,352 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 71 [2022-11-16 11:53:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:53:41,354 INFO L225 Difference]: With dead ends: 442 [2022-11-16 11:53:41,354 INFO L226 Difference]: Without dead ends: 384 [2022-11-16 11:53:41,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=248, Invalid=1084, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 11:53:41,355 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 113 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:53:41,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1259 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 596 Invalid, 0 Unknown, 37 Unchecked, 1.9s Time] [2022-11-16 11:53:41,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-16 11:53:41,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 307. [2022-11-16 11:53:41,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 268 states have (on average 1.1604477611940298) internal successors, (311), 270 states have internal predecessors, (311), 24 states have call successors, (24), 15 states have call predecessors, (24), 14 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-16 11:53:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 357 transitions. [2022-11-16 11:53:41,470 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 357 transitions. Word has length 71 [2022-11-16 11:53:41,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:53:41,470 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 357 transitions. [2022-11-16 11:53:41,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-16 11:53:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 357 transitions. [2022-11-16 11:53:41,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 11:53:41,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:53:41,471 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:41,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:41,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:53:41,672 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:53:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1052633749, now seen corresponding path program 2 times [2022-11-16 11:53:41,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:53:41,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750202647] [2022-11-16 11:53:41,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:53:41,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:53:41,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:53:41,674 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:53:41,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87c21b0d-1218-461d-acba-48f84272ddeb/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-16 11:53:42,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:53:42,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:53:42,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-16 11:53:42,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:53:42,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 11:53:42,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-16 11:53:43,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:43,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 11:53:43,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:43,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:43,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-16 11:53:44,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:44,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:44,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:44,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 50 [2022-11-16 11:53:47,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:47,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:47,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:47,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 61 [2022-11-16 11:53:47,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:47,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:47,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:47,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 74 [2022-11-16 11:53:48,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:48,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:48,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:48,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 87 [2022-11-16 11:53:48,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:48,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:48,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:48,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:48,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:48,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:53:48,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 98