./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:06:02,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:06:02,910 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 07:06:02,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:06:02,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:06:02,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:06:02,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:06:02,939 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:06:02,940 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:06:02,941 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:06:02,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:06:02,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:06:02,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:06:02,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:06:02,943 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:06:02,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:06:02,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:06:02,945 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:06:02,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:06:02,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:06:02,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:06:02,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:06:02,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:06:02,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:06:02,949 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:06:02,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:06:02,950 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:06:02,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:06:02,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:06:02,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:06:02,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:06:02,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:06:02,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:06:02,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:06:02,953 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:06:02,953 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:06:02,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:06:02,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:06:02,954 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:06:02,955 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:06:02,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:06:02,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:06:02,956 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2023-11-29 07:06:03,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:06:03,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:06:03,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:06:03,212 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:06:03,213 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:06:03,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2023-11-29 07:06:06,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:06:06,371 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:06:06,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2023-11-29 07:06:06,392 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/data/1bfa630ee/fa2a208b611b47439b593e09c52da2e9/FLAGcb9d0eccb [2023-11-29 07:06:06,408 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/data/1bfa630ee/fa2a208b611b47439b593e09c52da2e9 [2023-11-29 07:06:06,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:06:06,413 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:06:06,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:06:06,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:06:06,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:06:06,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:06:06" (1/1) ... [2023-11-29 07:06:06,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20551925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:06, skipping insertion in model container [2023-11-29 07:06:06,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:06:06" (1/1) ... [2023-11-29 07:06:06,530 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:06:06,946 WARN L240 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_26dad07e-8575-465e-ad59-bcd87fe8a6eb/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i[33022,33035] [2023-11-29 07:06:07,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:06:07,172 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:06:07,206 WARN L240 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_26dad07e-8575-465e-ad59-bcd87fe8a6eb/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i[33022,33035] [2023-11-29 07:06:07,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:06:07,404 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 07:06:07,419 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:06:07,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07 WrapperNode [2023-11-29 07:06:07,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:06:07,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:06:07,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:06:07,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:06:07,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:07,482 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:07,592 INFO L138 Inliner]: procedures = 177, calls = 575, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3295 [2023-11-29 07:06:07,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:06:07,593 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:06:07,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:06:07,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:06:07,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:07,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:07,623 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:07,877 INFO L175 MemorySlicer]: Split 538 memory accesses to 5 slices as follows [2, 106, 420, 5, 5]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 96 writes are split as follows [0, 4, 90, 1, 1]. [2023-11-29 07:06:07,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:07,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:07,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:07,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:07,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:07,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:08,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:06:08,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:06:08,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:06:08,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:06:08,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (1/1) ... [2023-11-29 07:06:08,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:06:08,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:08,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:06:08,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:06:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-11-29 07:06:08,089 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-11-29 07:06:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 07:06:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 07:06:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 07:06:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 07:06:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 07:06:08,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 07:06:08,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 07:06:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 07:06:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 07:06:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 07:06:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 07:06:08,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 07:06:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 07:06:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 07:06:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 07:06:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 07:06:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-29 07:06:08,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 07:06:08,093 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 07:06:08,093 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 07:06:08,093 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 07:06:08,093 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-29 07:06:08,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 07:06:08,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:06:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 07:06:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 07:06:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 07:06:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 07:06:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 07:06:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 07:06:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 07:06:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 07:06:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 07:06:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 07:06:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 07:06:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 07:06:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 07:06:08,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:06:08,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 07:06:08,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 07:06:08,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 07:06:08,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 07:06:08,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:06:08,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:06:08,394 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:06:08,397 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:06:11,216 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:06:11,296 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:06:11,297 INFO L309 CfgBuilder]: Removed 160 assume(true) statements. [2023-11-29 07:06:11,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:06:11 BoogieIcfgContainer [2023-11-29 07:06:11,298 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:06:11,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:06:11,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:06:11,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:06:11,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:06:06" (1/3) ... [2023-11-29 07:06:11,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee3f179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:06:11, skipping insertion in model container [2023-11-29 07:06:11,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:06:07" (2/3) ... [2023-11-29 07:06:11,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee3f179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:06:11, skipping insertion in model container [2023-11-29 07:06:11,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:06:11" (3/3) ... [2023-11-29 07:06:11,306 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-2.i [2023-11-29 07:06:11,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:06:11,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 07:06:11,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:06:11,402 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=LoopHeads, 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;@3116f9cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:06:11,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 07:06:11,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 938 states, 919 states have (on average 1.7149075081610445) internal successors, (1576), 924 states have internal predecessors, (1576), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-29 07:06:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 07:06:11,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:11,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:11,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:11,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:11,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1979423608, now seen corresponding path program 1 times [2023-11-29 07:06:11,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:11,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288956453] [2023-11-29 07:06:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:11,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:06:11,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288956453] [2023-11-29 07:06:11,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288956453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:11,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:11,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:06:11,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051341562] [2023-11-29 07:06:11,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:11,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 07:06:11,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:11,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 07:06:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:06:11,712 INFO L87 Difference]: Start difference. First operand has 938 states, 919 states have (on average 1.7149075081610445) internal successors, (1576), 924 states have internal predecessors, (1576), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:11,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:11,826 INFO L93 Difference]: Finished difference Result 1875 states and 3215 transitions. [2023-11-29 07:06:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 07:06:11,829 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-29 07:06:11,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:11,851 INFO L225 Difference]: With dead ends: 1875 [2023-11-29 07:06:11,851 INFO L226 Difference]: Without dead ends: 903 [2023-11-29 07:06:11,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:06:11,863 INFO L413 NwaCegarLoop]: 1431 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:11,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1431 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:06:11,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2023-11-29 07:06:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 903. [2023-11-29 07:06:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 885 states have (on average 1.5378531073446329) internal successors, (1361), 890 states have internal predecessors, (1361), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 07:06:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1388 transitions. [2023-11-29 07:06:11,967 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1388 transitions. Word has length 12 [2023-11-29 07:06:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:11,967 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1388 transitions. [2023-11-29 07:06:11,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1388 transitions. [2023-11-29 07:06:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-29 07:06:11,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:11,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:11,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 07:06:11,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:11,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash 798405662, now seen corresponding path program 1 times [2023-11-29 07:06:11,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:11,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731622722] [2023-11-29 07:06:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:11,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:06:12,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:12,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731622722] [2023-11-29 07:06:12,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731622722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:12,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:12,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:12,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077053710] [2023-11-29 07:06:12,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:12,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:06:12,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:12,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:06:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:06:12,342 INFO L87 Difference]: Start difference. First operand 903 states and 1388 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:12,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:12,563 INFO L93 Difference]: Finished difference Result 1802 states and 2772 transitions. [2023-11-29 07:06:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:06:12,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-29 07:06:12,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:12,573 INFO L225 Difference]: With dead ends: 1802 [2023-11-29 07:06:12,573 INFO L226 Difference]: Without dead ends: 1245 [2023-11-29 07:06:12,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:06:12,576 INFO L413 NwaCegarLoop]: 1381 mSDtfsCounter, 504 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 4079 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:12,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 4079 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-11-29 07:06:12,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 905. [2023-11-29 07:06:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 887 states have (on average 1.536640360766629) internal successors, (1363), 892 states have internal predecessors, (1363), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 07:06:12,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1390 transitions. [2023-11-29 07:06:12,615 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1390 transitions. Word has length 67 [2023-11-29 07:06:12,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:12,615 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1390 transitions. [2023-11-29 07:06:12,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:12,615 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1390 transitions. [2023-11-29 07:06:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 07:06:12,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:12,622 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:12,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 07:06:12,622 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:12,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:12,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2044985054, now seen corresponding path program 1 times [2023-11-29 07:06:12,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:12,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900852452] [2023-11-29 07:06:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:12,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:12,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:12,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604824556] [2023-11-29 07:06:12,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:12,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:12,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:12,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:12,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:06:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:13,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:06:13,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:06:13,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:13,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900852452] [2023-11-29 07:06:13,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604824556] [2023-11-29 07:06:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604824556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:13,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:13,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:13,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142559924] [2023-11-29 07:06:13,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:13,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:13,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:13,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:13,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:13,199 INFO L87 Difference]: Start difference. First operand 905 states and 1390 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:13,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:13,323 INFO L93 Difference]: Finished difference Result 1828 states and 2808 transitions. [2023-11-29 07:06:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:06:13,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-11-29 07:06:13,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:13,329 INFO L225 Difference]: With dead ends: 1828 [2023-11-29 07:06:13,329 INFO L226 Difference]: Without dead ends: 926 [2023-11-29 07:06:13,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:13,332 INFO L413 NwaCegarLoop]: 1365 mSDtfsCounter, 9 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:13,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2716 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-11-29 07:06:13,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 925. [2023-11-29 07:06:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 907 states have (on average 1.5248070562293274) internal successors, (1383), 912 states have internal predecessors, (1383), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 07:06:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1410 transitions. [2023-11-29 07:06:13,363 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1410 transitions. Word has length 144 [2023-11-29 07:06:13,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:13,363 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1410 transitions. [2023-11-29 07:06:13,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:13,363 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1410 transitions. [2023-11-29 07:06:13,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 07:06:13,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:13,366 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:13,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:06:13,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:13,574 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:13,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash 752345690, now seen corresponding path program 1 times [2023-11-29 07:06:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:13,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986692151] [2023-11-29 07:06:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:13,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:13,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:13,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535178667] [2023-11-29 07:06:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:13,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:13,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:13,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:13,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:06:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:14,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:06:14,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:06:14,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:14,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:14,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986692151] [2023-11-29 07:06:14,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:14,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535178667] [2023-11-29 07:06:14,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535178667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:14,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:14,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:14,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247328861] [2023-11-29 07:06:14,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:14,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:14,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:14,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:14,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:14,136 INFO L87 Difference]: Start difference. First operand 925 states and 1410 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:14,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:14,254 INFO L93 Difference]: Finished difference Result 1455 states and 2229 transitions. [2023-11-29 07:06:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:06:14,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-11-29 07:06:14,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:14,262 INFO L225 Difference]: With dead ends: 1455 [2023-11-29 07:06:14,262 INFO L226 Difference]: Without dead ends: 946 [2023-11-29 07:06:14,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:14,265 INFO L413 NwaCegarLoop]: 1365 mSDtfsCounter, 9 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:14,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2716 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:14,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2023-11-29 07:06:14,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 945. [2023-11-29 07:06:14,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 927 states have (on average 1.5134843581445523) internal successors, (1403), 932 states have internal predecessors, (1403), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 07:06:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1430 transitions. [2023-11-29 07:06:14,300 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1430 transitions. Word has length 144 [2023-11-29 07:06:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:14,301 INFO L495 AbstractCegarLoop]: Abstraction has 945 states and 1430 transitions. [2023-11-29 07:06:14,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1430 transitions. [2023-11-29 07:06:14,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 07:06:14,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:14,304 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:14,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 07:06:14,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:14,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:14,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:14,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1186816356, now seen corresponding path program 1 times [2023-11-29 07:06:14,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:14,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977921362] [2023-11-29 07:06:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:14,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:14,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:14,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399985356] [2023-11-29 07:06:14,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:14,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:14,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:14,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:14,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:06:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:14,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:06:14,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:06:14,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:14,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:14,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977921362] [2023-11-29 07:06:14,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:14,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399985356] [2023-11-29 07:06:14,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399985356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:14,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:14,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:06:14,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073834721] [2023-11-29 07:06:14,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:14,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:06:14,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:14,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:06:14,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:06:14,991 INFO L87 Difference]: Start difference. First operand 945 states and 1430 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:15,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:15,105 INFO L93 Difference]: Finished difference Result 1874 states and 2844 transitions. [2023-11-29 07:06:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:06:15,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-11-29 07:06:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:15,112 INFO L225 Difference]: With dead ends: 1874 [2023-11-29 07:06:15,112 INFO L226 Difference]: Without dead ends: 932 [2023-11-29 07:06:15,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:06:15,114 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 165 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:15,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 3922 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:15,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2023-11-29 07:06:15,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 931. [2023-11-29 07:06:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 913 states have (on average 1.5136911281489596) internal successors, (1382), 918 states have internal predecessors, (1382), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 07:06:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1409 transitions. [2023-11-29 07:06:15,164 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1409 transitions. Word has length 144 [2023-11-29 07:06:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:15,165 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1409 transitions. [2023-11-29 07:06:15,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:15,165 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1409 transitions. [2023-11-29 07:06:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 07:06:15,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:15,168 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:15,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 07:06:15,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:15,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:15,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:15,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2107495894, now seen corresponding path program 1 times [2023-11-29 07:06:15,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:15,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772879509] [2023-11-29 07:06:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:15,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:15,429 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:15,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130636567] [2023-11-29 07:06:15,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:15,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:15,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:15,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:15,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:06:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:15,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:06:15,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 07:06:15,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:15,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:15,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772879509] [2023-11-29 07:06:15,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:15,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130636567] [2023-11-29 07:06:15,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130636567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:15,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:15,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:06:15,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765109129] [2023-11-29 07:06:15,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:15,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:06:15,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:15,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:06:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:06:15,900 INFO L87 Difference]: Start difference. First operand 931 states and 1409 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:16,008 INFO L93 Difference]: Finished difference Result 1429 states and 2177 transitions. [2023-11-29 07:06:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:06:16,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-11-29 07:06:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:16,014 INFO L225 Difference]: With dead ends: 1429 [2023-11-29 07:06:16,014 INFO L226 Difference]: Without dead ends: 918 [2023-11-29 07:06:16,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:06:16,016 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 165 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:16,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 3901 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2023-11-29 07:06:16,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 917. [2023-11-29 07:06:16,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 899 states have (on average 1.513904338153504) internal successors, (1361), 904 states have internal predecessors, (1361), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 07:06:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1388 transitions. [2023-11-29 07:06:16,039 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1388 transitions. Word has length 144 [2023-11-29 07:06:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:16,040 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1388 transitions. [2023-11-29 07:06:16,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1388 transitions. [2023-11-29 07:06:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-29 07:06:16,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:16,042 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:16,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 07:06:16,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:16,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:16,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:16,243 INFO L85 PathProgramCache]: Analyzing trace with hash -127345828, now seen corresponding path program 1 times [2023-11-29 07:06:16,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:16,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936610254] [2023-11-29 07:06:16,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:16,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:16,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:16,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119569602] [2023-11-29 07:06:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:16,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:16,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:16,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:16,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:06:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:16,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:06:16,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:06:16,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:16,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:16,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936610254] [2023-11-29 07:06:16,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:16,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119569602] [2023-11-29 07:06:16,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119569602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:16,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:16,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:06:16,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225570968] [2023-11-29 07:06:16,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:16,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:16,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:16,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:16,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:16,933 INFO L87 Difference]: Start difference. First operand 917 states and 1388 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:17,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:17,040 INFO L93 Difference]: Finished difference Result 2372 states and 3606 transitions. [2023-11-29 07:06:17,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:06:17,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-11-29 07:06:17,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:17,048 INFO L225 Difference]: With dead ends: 2372 [2023-11-29 07:06:17,048 INFO L226 Difference]: Without dead ends: 1458 [2023-11-29 07:06:17,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:17,050 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 765 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:17,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 2890 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:17,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2023-11-29 07:06:17,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1453. [2023-11-29 07:06:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1430 states have (on average 1.5223776223776224) internal successors, (2177), 1435 states have internal predecessors, (2177), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 07:06:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2214 transitions. [2023-11-29 07:06:17,086 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2214 transitions. Word has length 144 [2023-11-29 07:06:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:17,087 INFO L495 AbstractCegarLoop]: Abstraction has 1453 states and 2214 transitions. [2023-11-29 07:06:17,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:06:17,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2214 transitions. [2023-11-29 07:06:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 07:06:17,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:17,089 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:17,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 07:06:17,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:17,290 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:17,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:17,291 INFO L85 PathProgramCache]: Analyzing trace with hash -380007986, now seen corresponding path program 1 times [2023-11-29 07:06:17,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:17,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970200055] [2023-11-29 07:06:17,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:17,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:17,341 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:17,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011510878] [2023-11-29 07:06:17,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:17,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:17,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:17,343 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:17,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 07:06:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:17,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:06:17,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:17,736 INFO L378 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 11 treesize of output 7 [2023-11-29 07:06:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 07:06:17,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:17,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:17,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970200055] [2023-11-29 07:06:17,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:17,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011510878] [2023-11-29 07:06:17,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011510878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:17,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:17,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:17,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138627486] [2023-11-29 07:06:17,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:17,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:06:17,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:17,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:06:17,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:06:17,766 INFO L87 Difference]: Start difference. First operand 1453 states and 2214 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:06:17,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:17,968 INFO L93 Difference]: Finished difference Result 2790 states and 4244 transitions. [2023-11-29 07:06:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:06:17,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2023-11-29 07:06:17,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:17,978 INFO L225 Difference]: With dead ends: 2790 [2023-11-29 07:06:17,979 INFO L226 Difference]: Without dead ends: 1511 [2023-11-29 07:06:17,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:06:17,982 INFO L413 NwaCegarLoop]: 1367 mSDtfsCounter, 490 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:17,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 4044 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2023-11-29 07:06:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1453. [2023-11-29 07:06:18,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1430 states have (on average 1.5216783216783216) internal successors, (2176), 1435 states have internal predecessors, (2176), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 07:06:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2213 transitions. [2023-11-29 07:06:18,031 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2213 transitions. Word has length 157 [2023-11-29 07:06:18,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:18,032 INFO L495 AbstractCegarLoop]: Abstraction has 1453 states and 2213 transitions. [2023-11-29 07:06:18,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:06:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2213 transitions. [2023-11-29 07:06:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-11-29 07:06:18,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:18,036 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:18,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 07:06:18,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:18,237 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:18,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash 49558473, now seen corresponding path program 1 times [2023-11-29 07:06:18,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:18,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768520479] [2023-11-29 07:06:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:18,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:18,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:18,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788674852] [2023-11-29 07:06:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:18,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:18,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:18,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:18,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:06:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:18,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:06:18,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 07:06:18,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:18,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:18,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768520479] [2023-11-29 07:06:18,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:18,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788674852] [2023-11-29 07:06:18,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788674852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:18,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:18,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:06:18,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162136891] [2023-11-29 07:06:18,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:18,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:18,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:18,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:18,925 INFO L87 Difference]: Start difference. First operand 1453 states and 2213 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:06:19,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:19,033 INFO L93 Difference]: Finished difference Result 2895 states and 4405 transitions. [2023-11-29 07:06:19,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:06:19,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 228 [2023-11-29 07:06:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:19,042 INFO L225 Difference]: With dead ends: 2895 [2023-11-29 07:06:19,042 INFO L226 Difference]: Without dead ends: 1495 [2023-11-29 07:06:19,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:19,045 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 9 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:19,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2688 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2023-11-29 07:06:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1493. [2023-11-29 07:06:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1470 states have (on average 1.5074829931972789) internal successors, (2216), 1475 states have internal predecessors, (2216), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 07:06:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2253 transitions. [2023-11-29 07:06:19,083 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2253 transitions. Word has length 228 [2023-11-29 07:06:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:19,083 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 2253 transitions. [2023-11-29 07:06:19,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:06:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2253 transitions. [2023-11-29 07:06:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-11-29 07:06:19,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:19,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:19,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:06:19,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 07:06:19,287 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:19,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash -80306105, now seen corresponding path program 1 times [2023-11-29 07:06:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:19,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916406658] [2023-11-29 07:06:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:19,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:19,364 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:19,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098638422] [2023-11-29 07:06:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:19,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:19,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:19,367 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:19,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 07:06:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:19,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:06:19,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 07:06:19,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:19,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:19,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916406658] [2023-11-29 07:06:19,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:19,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098638422] [2023-11-29 07:06:19,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098638422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:19,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:19,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:06:19,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190644015] [2023-11-29 07:06:19,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:19,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:06:19,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:19,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:06:19,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:06:19,891 INFO L87 Difference]: Start difference. First operand 1493 states and 2253 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:06:20,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:20,013 INFO L93 Difference]: Finished difference Result 2889 states and 4370 transitions. [2023-11-29 07:06:20,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:06:20,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 228 [2023-11-29 07:06:20,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:20,021 INFO L225 Difference]: With dead ends: 2889 [2023-11-29 07:06:20,021 INFO L226 Difference]: Without dead ends: 1467 [2023-11-29 07:06:20,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:06:20,024 INFO L413 NwaCegarLoop]: 1344 mSDtfsCounter, 165 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:20,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 3880 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2023-11-29 07:06:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1465. [2023-11-29 07:06:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1442 states have (on average 1.507628294036061) internal successors, (2174), 1447 states have internal predecessors, (2174), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 07:06:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2211 transitions. [2023-11-29 07:06:20,067 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2211 transitions. Word has length 228 [2023-11-29 07:06:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:20,067 INFO L495 AbstractCegarLoop]: Abstraction has 1465 states and 2211 transitions. [2023-11-29 07:06:20,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:06:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2211 transitions. [2023-11-29 07:06:20,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-11-29 07:06:20,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:20,071 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:20,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 07:06:20,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:20,272 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:20,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:20,272 INFO L85 PathProgramCache]: Analyzing trace with hash -345020203, now seen corresponding path program 1 times [2023-11-29 07:06:20,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:20,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491034437] [2023-11-29 07:06:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:20,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:20,356 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:20,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800836739] [2023-11-29 07:06:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:20,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:20,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:20,357 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:20,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 07:06:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:20,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:06:20,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 07:06:21,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:21,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:21,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491034437] [2023-11-29 07:06:21,009 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:21,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800836739] [2023-11-29 07:06:21,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800836739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:21,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:21,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:06:21,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193168789] [2023-11-29 07:06:21,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:21,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:06:21,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:21,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:06:21,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:21,011 INFO L87 Difference]: Start difference. First operand 1465 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:06:21,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:21,111 INFO L93 Difference]: Finished difference Result 3418 states and 5203 transitions. [2023-11-29 07:06:21,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:06:21,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 228 [2023-11-29 07:06:21,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:21,124 INFO L225 Difference]: With dead ends: 3418 [2023-11-29 07:06:21,124 INFO L226 Difference]: Without dead ends: 2083 [2023-11-29 07:06:21,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:06:21,128 INFO L413 NwaCegarLoop]: 1362 mSDtfsCounter, 725 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:21,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 2699 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:06:21,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2023-11-29 07:06:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1828. [2023-11-29 07:06:21,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1802 states have (on average 1.5205327413984462) internal successors, (2740), 1807 states have internal predecessors, (2740), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-29 07:06:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2783 transitions. [2023-11-29 07:06:21,201 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2783 transitions. Word has length 228 [2023-11-29 07:06:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:21,201 INFO L495 AbstractCegarLoop]: Abstraction has 1828 states and 2783 transitions. [2023-11-29 07:06:21,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 2 states have internal predecessors, (220), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:06:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2783 transitions. [2023-11-29 07:06:21,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-29 07:06:21,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:21,206 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:21,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 07:06:21,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 07:06:21,406 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:21,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:21,407 INFO L85 PathProgramCache]: Analyzing trace with hash 808798886, now seen corresponding path program 1 times [2023-11-29 07:06:21,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:21,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673828459] [2023-11-29 07:06:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:21,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:21,494 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:21,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484747171] [2023-11-29 07:06:21,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:21,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:21,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:21,496 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:21,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 07:06:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:22,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:06:22,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:06:22,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:22,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:22,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673828459] [2023-11-29 07:06:22,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:22,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484747171] [2023-11-29 07:06:22,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484747171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:22,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:22,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:06:22,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920019890] [2023-11-29 07:06:22,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:22,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:06:22,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:22,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:06:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:06:22,298 INFO L87 Difference]: Start difference. First operand 1828 states and 2783 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 07:06:22,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:22,862 INFO L93 Difference]: Finished difference Result 2989 states and 4549 transitions. [2023-11-29 07:06:22,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:06:22,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 241 [2023-11-29 07:06:22,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:22,878 INFO L225 Difference]: With dead ends: 2989 [2023-11-29 07:06:22,878 INFO L226 Difference]: Without dead ends: 1454 [2023-11-29 07:06:22,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:06:22,882 INFO L413 NwaCegarLoop]: 1460 mSDtfsCounter, 2420 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:22,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 1701 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 07:06:22,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2023-11-29 07:06:22,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1454. [2023-11-29 07:06:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1433 states have (on average 1.5073272854152129) internal successors, (2160), 1438 states have internal predecessors, (2160), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-29 07:06:22,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2193 transitions. [2023-11-29 07:06:22,948 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2193 transitions. Word has length 241 [2023-11-29 07:06:22,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:22,949 INFO L495 AbstractCegarLoop]: Abstraction has 1454 states and 2193 transitions. [2023-11-29 07:06:22,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 07:06:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2193 transitions. [2023-11-29 07:06:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-11-29 07:06:22,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:22,955 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:22,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 07:06:23,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 07:06:23,156 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:23,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:23,156 INFO L85 PathProgramCache]: Analyzing trace with hash 29456601, now seen corresponding path program 1 times [2023-11-29 07:06:23,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:23,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865119341] [2023-11-29 07:06:23,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:23,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:23,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:23,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003579114] [2023-11-29 07:06:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:23,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:23,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:23,247 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:23,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 07:06:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:23,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 07:06:23,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:23,836 INFO L378 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 11 treesize of output 7 [2023-11-29 07:06:24,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-11-29 07:06:24,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 07:06:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:06:24,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:06:24,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:24,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865119341] [2023-11-29 07:06:24,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:24,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003579114] [2023-11-29 07:06:24,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003579114] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:24,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:24,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 07:06:24,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156654635] [2023-11-29 07:06:24,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:24,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:06:24,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:24,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:06:24,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:06:24,588 INFO L87 Difference]: Start difference. First operand 1454 states and 2193 transitions. Second operand has 9 states, 9 states have (on average 44.22222222222222) internal successors, (398), 9 states have internal predecessors, (398), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:06:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:25,120 INFO L93 Difference]: Finished difference Result 3363 states and 5041 transitions. [2023-11-29 07:06:25,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:06:25,121 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 44.22222222222222) internal successors, (398), 9 states have internal predecessors, (398), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 251 [2023-11-29 07:06:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:25,135 INFO L225 Difference]: With dead ends: 3363 [2023-11-29 07:06:25,135 INFO L226 Difference]: Without dead ends: 2550 [2023-11-29 07:06:25,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 486 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:06:25,138 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 4881 mSDsluCounter, 4865 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4896 SdHoareTripleChecker+Valid, 6167 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:25,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4896 Valid, 6167 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:06:25,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2023-11-29 07:06:25,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2207. [2023-11-29 07:06:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 2174 states have (on average 1.484360625574977) internal successors, (3227), 2179 states have internal predecessors, (3227), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 07:06:25,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3282 transitions. [2023-11-29 07:06:25,217 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3282 transitions. Word has length 251 [2023-11-29 07:06:25,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:25,218 INFO L495 AbstractCegarLoop]: Abstraction has 2207 states and 3282 transitions. [2023-11-29 07:06:25,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.22222222222222) internal successors, (398), 9 states have internal predecessors, (398), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:06:25,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3282 transitions. [2023-11-29 07:06:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-29 07:06:25,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:25,224 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:25,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 07:06:25,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 07:06:25,425 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:25,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:25,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1820811461, now seen corresponding path program 1 times [2023-11-29 07:06:25,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:25,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977809908] [2023-11-29 07:06:25,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:25,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:25,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:25,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954021329] [2023-11-29 07:06:25,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:25,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:25,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:25,576 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:25,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 07:06:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:26,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 07:06:26,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:26,446 INFO L378 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 11 treesize of output 7 [2023-11-29 07:06:26,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-11-29 07:06:26,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 07:06:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-29 07:06:26,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-29 07:06:26,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:26,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977809908] [2023-11-29 07:06:26,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:26,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954021329] [2023-11-29 07:06:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954021329] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:26,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:26,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 07:06:26,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529877364] [2023-11-29 07:06:27,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:27,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:06:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:06:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:06:27,003 INFO L87 Difference]: Start difference. First operand 2207 states and 3282 transitions. Second operand has 9 states, 9 states have (on average 53.55555555555556) internal successors, (482), 9 states have internal predecessors, (482), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:06:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:27,475 INFO L93 Difference]: Finished difference Result 4233 states and 6305 transitions. [2023-11-29 07:06:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:06:27,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 53.55555555555556) internal successors, (482), 9 states have internal predecessors, (482), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 482 [2023-11-29 07:06:27,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:27,489 INFO L225 Difference]: With dead ends: 4233 [2023-11-29 07:06:27,489 INFO L226 Difference]: Without dead ends: 2550 [2023-11-29 07:06:27,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 948 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:06:27,493 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 2356 mSDsluCounter, 7891 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2370 SdHoareTripleChecker+Valid, 9221 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:27,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2370 Valid, 9221 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:06:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2023-11-29 07:06:27,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2210. [2023-11-29 07:06:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2177 states have (on average 1.4827744602664217) internal successors, (3228), 2182 states have internal predecessors, (3228), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-29 07:06:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3283 transitions. [2023-11-29 07:06:27,582 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3283 transitions. Word has length 482 [2023-11-29 07:06:27,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:27,583 INFO L495 AbstractCegarLoop]: Abstraction has 2210 states and 3283 transitions. [2023-11-29 07:06:27,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 53.55555555555556) internal successors, (482), 9 states have internal predecessors, (482), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:06:27,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3283 transitions. [2023-11-29 07:06:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-29 07:06:27,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:27,592 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:27,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 07:06:27,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 07:06:27,793 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:27,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:27,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2089285442, now seen corresponding path program 1 times [2023-11-29 07:06:27,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:27,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902521526] [2023-11-29 07:06:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:27,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:28,016 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:28,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984116839] [2023-11-29 07:06:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:28,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:28,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:28,017 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:28,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 07:06:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:29,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 07:06:29,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:29,242 INFO L378 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 11 treesize of output 7 [2023-11-29 07:06:29,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-11-29 07:06:29,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:29,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:30,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:30,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 07:06:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:06:30,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:06:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902521526] [2023-11-29 07:06:30,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984116839] [2023-11-29 07:06:30,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984116839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:30,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:30,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 07:06:30,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292732980] [2023-11-29 07:06:30,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:30,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 07:06:30,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:30,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 07:06:30,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:06:30,956 INFO L87 Difference]: Start difference. First operand 2210 states and 3283 transitions. Second operand has 15 states, 15 states have (on average 85.73333333333333) internal successors, (1286), 15 states have internal predecessors, (1286), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:06:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:31,758 INFO L93 Difference]: Finished difference Result 5433 states and 8059 transitions. [2023-11-29 07:06:31,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 07:06:31,759 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 85.73333333333333) internal successors, (1286), 15 states have internal predecessors, (1286), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 695 [2023-11-29 07:06:31,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:31,784 INFO L225 Difference]: With dead ends: 5433 [2023-11-29 07:06:31,785 INFO L226 Difference]: Without dead ends: 4620 [2023-11-29 07:06:31,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1398 GetRequests, 1368 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=390, Unknown=0, NotChecked=0, Total=600 [2023-11-29 07:06:31,788 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 8976 mSDsluCounter, 10670 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9015 SdHoareTripleChecker+Valid, 11972 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:31,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9015 Valid, 11972 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:06:31,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4620 states. [2023-11-29 07:06:31,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4620 to 4277. [2023-11-29 07:06:31,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4277 states, 4220 states have (on average 1.4677725118483411) internal successors, (6194), 4225 states have internal predecessors, (6194), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-29 07:06:31,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 6297 transitions. [2023-11-29 07:06:31,928 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 6297 transitions. Word has length 695 [2023-11-29 07:06:31,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:31,929 INFO L495 AbstractCegarLoop]: Abstraction has 4277 states and 6297 transitions. [2023-11-29 07:06:31,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 85.73333333333333) internal successors, (1286), 15 states have internal predecessors, (1286), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:06:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 6297 transitions. [2023-11-29 07:06:31,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2023-11-29 07:06:31,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:31,950 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:31,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 07:06:32,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 07:06:32,151 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:32,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:32,151 INFO L85 PathProgramCache]: Analyzing trace with hash -465094334, now seen corresponding path program 1 times [2023-11-29 07:06:32,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979155583] [2023-11-29 07:06:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:32,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:32,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:32,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799020614] [2023-11-29 07:06:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:32,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:32,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:32,641 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:32,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 07:06:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:34,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 5486 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 07:06:34,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:34,506 INFO L378 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 11 treesize of output 7 [2023-11-29 07:06:34,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-11-29 07:06:34,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:35,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:35,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:35,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 07:06:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2023-11-29 07:06:35,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2023-11-29 07:06:36,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:36,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979155583] [2023-11-29 07:06:36,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:36,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799020614] [2023-11-29 07:06:36,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799020614] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:36,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:36,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 07:06:36,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369383994] [2023-11-29 07:06:36,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:36,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 07:06:36,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:36,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 07:06:36,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:06:36,192 INFO L87 Difference]: Start difference. First operand 4277 states and 6297 transitions. Second operand has 15 states, 15 states have (on average 91.33333333333333) internal successors, (1370), 15 states have internal predecessors, (1370), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:06:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:36,939 INFO L93 Difference]: Finished difference Result 7338 states and 10829 transitions. [2023-11-29 07:06:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 07:06:36,940 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 91.33333333333333) internal successors, (1370), 15 states have internal predecessors, (1370), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 1157 [2023-11-29 07:06:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:36,952 INFO L225 Difference]: With dead ends: 7338 [2023-11-29 07:06:36,952 INFO L226 Difference]: Without dead ends: 4620 [2023-11-29 07:06:36,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2322 GetRequests, 2292 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=390, Unknown=0, NotChecked=0, Total=600 [2023-11-29 07:06:36,956 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 8052 mSDsluCounter, 10786 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8090 SdHoareTripleChecker+Valid, 12116 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:36,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8090 Valid, 12116 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:06:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4620 states. [2023-11-29 07:06:37,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4620 to 4280. [2023-11-29 07:06:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4223 states have (on average 1.466256215960218) internal successors, (6192), 4228 states have internal predecessors, (6192), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-29 07:06:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 6295 transitions. [2023-11-29 07:06:37,047 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 6295 transitions. Word has length 1157 [2023-11-29 07:06:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:37,048 INFO L495 AbstractCegarLoop]: Abstraction has 4280 states and 6295 transitions. [2023-11-29 07:06:37,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 91.33333333333333) internal successors, (1370), 15 states have internal predecessors, (1370), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:06:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 6295 transitions. [2023-11-29 07:06:37,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2023-11-29 07:06:37,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:37,071 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:37,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 07:06:37,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 07:06:37,272 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:37,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2034540948, now seen corresponding path program 2 times [2023-11-29 07:06:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:37,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84962949] [2023-11-29 07:06:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:37,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:37,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:37,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383120267] [2023-11-29 07:06:37,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:06:37,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:37,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:37,825 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:37,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 07:06:39,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 07:06:39,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:06:39,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 07:06:39,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:40,746 INFO L378 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 11 treesize of output 7 [2023-11-29 07:06:41,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 07:06:41,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 24 [2023-11-29 07:06:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6662 trivial. 0 not checked. [2023-11-29 07:06:41,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:41,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:41,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84962949] [2023-11-29 07:06:41,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:41,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383120267] [2023-11-29 07:06:41,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383120267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:41,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:41,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 07:06:41,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888130515] [2023-11-29 07:06:41,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:41,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 07:06:41,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:41,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 07:06:41,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:06:41,213 INFO L87 Difference]: Start difference. First operand 4280 states and 6295 transitions. Second operand has 11 states, 11 states have (on average 21.818181818181817) internal successors, (240), 11 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 07:06:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:42,858 INFO L93 Difference]: Finished difference Result 5053 states and 7483 transitions. [2023-11-29 07:06:42,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:06:42,858 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.818181818181817) internal successors, (240), 11 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1583 [2023-11-29 07:06:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:42,867 INFO L225 Difference]: With dead ends: 5053 [2023-11-29 07:06:42,867 INFO L226 Difference]: Without dead ends: 4317 [2023-11-29 07:06:42,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1589 GetRequests, 1573 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-29 07:06:42,869 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 1201 mSDsluCounter, 9243 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 10574 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:42,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 10574 Invalid, 1400 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 07:06:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2023-11-29 07:06:42,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 4312. [2023-11-29 07:06:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4255 states have (on average 1.463924794359577) internal successors, (6229), 4260 states have internal predecessors, (6229), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-29 07:06:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 6332 transitions. [2023-11-29 07:06:42,994 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 6332 transitions. Word has length 1583 [2023-11-29 07:06:42,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:42,995 INFO L495 AbstractCegarLoop]: Abstraction has 4312 states and 6332 transitions. [2023-11-29 07:06:42,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.818181818181817) internal successors, (240), 11 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 07:06:42,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 6332 transitions. [2023-11-29 07:06:43,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2023-11-29 07:06:43,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:43,027 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:43,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 07:06:43,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 07:06:43,229 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:43,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:43,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1384407342, now seen corresponding path program 1 times [2023-11-29 07:06:43,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:43,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202292031] [2023-11-29 07:06:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:43,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:43,779 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:43,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817711380] [2023-11-29 07:06:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:43,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:43,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:43,781 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:43,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 07:06:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:46,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 7398 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:06:46,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6662 trivial. 0 not checked. [2023-11-29 07:06:46,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:06:46,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:46,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202292031] [2023-11-29 07:06:46,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:46,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817711380] [2023-11-29 07:06:46,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817711380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:06:46,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:06:46,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:06:46,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418606288] [2023-11-29 07:06:46,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:06:46,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:06:46,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:46,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:06:46,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:06:46,493 INFO L87 Difference]: Start difference. First operand 4312 states and 6332 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 07:06:46,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:46,601 INFO L93 Difference]: Finished difference Result 5053 states and 7482 transitions. [2023-11-29 07:06:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:06:46,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1583 [2023-11-29 07:06:46,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:46,609 INFO L225 Difference]: With dead ends: 5053 [2023-11-29 07:06:46,609 INFO L226 Difference]: Without dead ends: 4235 [2023-11-29 07:06:46,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1583 GetRequests, 1580 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:06:46,611 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 77 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3740 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:46,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3740 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:06:46,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4235 states. [2023-11-29 07:06:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4235 to 4235. [2023-11-29 07:06:46,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4235 states, 4178 states have (on average 1.463379607467688) internal successors, (6114), 4183 states have internal predecessors, (6114), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-29 07:06:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4235 states to 4235 states and 6217 transitions. [2023-11-29 07:06:46,755 INFO L78 Accepts]: Start accepts. Automaton has 4235 states and 6217 transitions. Word has length 1583 [2023-11-29 07:06:46,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:46,756 INFO L495 AbstractCegarLoop]: Abstraction has 4235 states and 6217 transitions. [2023-11-29 07:06:46,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 07:06:46,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4235 states and 6217 transitions. [2023-11-29 07:06:46,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1585 [2023-11-29 07:06:46,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:46,785 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:46,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 07:06:46,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 07:06:46,986 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:46,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:46,986 INFO L85 PathProgramCache]: Analyzing trace with hash 530429241, now seen corresponding path program 1 times [2023-11-29 07:06:46,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:46,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367533979] [2023-11-29 07:06:46,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:46,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:47,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:47,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545779773] [2023-11-29 07:06:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:47,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:47,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:47,533 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:47,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 07:06:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:06:50,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 7401 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 07:06:50,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:06:50,380 INFO L378 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 11 treesize of output 7 [2023-11-29 07:06:50,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-11-29 07:06:50,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:51,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:51,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:51,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:51,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:51,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:52,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:52,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:52,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:06:52,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 07:06:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:06:52,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:06:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:06:54,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:06:54,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367533979] [2023-11-29 07:06:54,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:06:54,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545779773] [2023-11-29 07:06:54,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545779773] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:06:54,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:06:54,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-29 07:06:54,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937045288] [2023-11-29 07:06:54,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:06:54,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 07:06:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:06:54,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 07:06:54,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2023-11-29 07:06:54,225 INFO L87 Difference]: Start difference. First operand 4235 states and 6217 transitions. Second operand has 27 states, 27 states have (on average 113.44444444444444) internal successors, (3063), 27 states have internal predecessors, (3063), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:06:56,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:06:56,358 INFO L93 Difference]: Finished difference Result 9483 states and 13939 transitions. [2023-11-29 07:06:56,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 07:06:56,359 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 113.44444444444444) internal successors, (3063), 27 states have internal predecessors, (3063), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 1584 [2023-11-29 07:06:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:06:56,372 INFO L225 Difference]: With dead ends: 9483 [2023-11-29 07:06:56,372 INFO L226 Difference]: Without dead ends: 8715 [2023-11-29 07:06:56,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3188 GetRequests, 3134 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=846, Invalid=1506, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 07:06:56,375 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 17379 mSDsluCounter, 19528 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17466 SdHoareTripleChecker+Valid, 20759 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 07:06:56,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17466 Valid, 20759 Invalid, 881 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 07:06:56,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8715 states. [2023-11-29 07:06:56,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8715 to 8372. [2023-11-29 07:06:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8372 states, 8267 states have (on average 1.4576025160275796) internal successors, (12050), 8272 states have internal predecessors, (12050), 100 states have call successors, (100), 4 states have call predecessors, (100), 4 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 07:06:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8372 states to 8372 states and 12249 transitions. [2023-11-29 07:06:56,592 INFO L78 Accepts]: Start accepts. Automaton has 8372 states and 12249 transitions. Word has length 1584 [2023-11-29 07:06:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:06:56,593 INFO L495 AbstractCegarLoop]: Abstraction has 8372 states and 12249 transitions. [2023-11-29 07:06:56,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 113.44444444444444) internal successors, (3063), 27 states have internal predecessors, (3063), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:06:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 8372 states and 12249 transitions. [2023-11-29 07:06:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2509 [2023-11-29 07:06:56,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:06:56,645 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:06:56,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 07:06:56,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:56,846 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:06:56,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:06:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1837957063, now seen corresponding path program 1 times [2023-11-29 07:06:56,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:06:56,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464677790] [2023-11-29 07:06:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:56,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:06:57,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:06:57,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365892819] [2023-11-29 07:06:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:06:57,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:06:57,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:06:57,655 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:06:57,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 07:07:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:07:01,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 11781 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 07:07:01,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:07:01,873 INFO L378 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 11 treesize of output 7 [2023-11-29 07:07:02,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-11-29 07:07:02,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:02,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:02,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:02,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:03,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:03,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:03,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:03,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:03,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:03,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:03,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:04,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:04,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:04,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:04,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:04,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:04,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:04,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:04,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:04,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:05,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 07:07:05,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 07:07:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 20984 backedges. 0 proven. 20966 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:07:05,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:07:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 20984 backedges. 0 proven. 20966 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 07:07:08,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:07:08,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464677790] [2023-11-29 07:07:08,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:07:08,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365892819] [2023-11-29 07:07:08,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365892819] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:07:08,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:07:08,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-11-29 07:07:08,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559642245] [2023-11-29 07:07:08,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:07:08,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 07:07:08,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:07:08,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 07:07:08,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1136, Invalid=1414, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 07:07:08,460 INFO L87 Difference]: Start difference. First operand 8372 states and 12249 transitions. Second operand has 51 states, 51 states have (on average 96.29411764705883) internal successors, (4911), 51 states have internal predecessors, (4911), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:07:19,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:07:19,581 INFO L93 Difference]: Finished difference Result 17763 states and 26023 transitions. [2023-11-29 07:07:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-11-29 07:07:19,581 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 96.29411764705883) internal successors, (4911), 51 states have internal predecessors, (4911), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 2508 [2023-11-29 07:07:19,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:07:19,603 INFO L225 Difference]: With dead ends: 17763 [2023-11-29 07:07:19,603 INFO L226 Difference]: Without dead ends: 16995 [2023-11-29 07:07:19,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5060 GetRequests, 4958 SyntacticMatches, 7 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3414, Invalid=5898, Unknown=0, NotChecked=0, Total=9312 [2023-11-29 07:07:19,609 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 58169 mSDsluCounter, 30150 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58352 SdHoareTripleChecker+Valid, 31381 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:07:19,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58352 Valid, 31381 Invalid, 1077 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [126 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 07:07:19,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16995 states. [2023-11-29 07:07:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16995 to 16652. [2023-11-29 07:07:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16652 states, 16451 states have (on average 1.4546228192815027) internal successors, (23930), 16456 states have internal predecessors, (23930), 196 states have call successors, (196), 4 states have call predecessors, (196), 4 states have return successors, (195), 192 states have call predecessors, (195), 195 states have call successors, (195) [2023-11-29 07:07:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16652 states to 16652 states and 24321 transitions. [2023-11-29 07:07:19,984 INFO L78 Accepts]: Start accepts. Automaton has 16652 states and 24321 transitions. Word has length 2508 [2023-11-29 07:07:19,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:07:19,986 INFO L495 AbstractCegarLoop]: Abstraction has 16652 states and 24321 transitions. [2023-11-29 07:07:19,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 96.29411764705883) internal successors, (4911), 51 states have internal predecessors, (4911), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-29 07:07:19,987 INFO L276 IsEmpty]: Start isEmpty. Operand 16652 states and 24321 transitions. [2023-11-29 07:07:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4357 [2023-11-29 07:07:20,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:07:20,162 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 36, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:07:20,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 07:07:20,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:07:20,363 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:07:20,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:07:20,364 INFO L85 PathProgramCache]: Analyzing trace with hash 952243769, now seen corresponding path program 2 times [2023-11-29 07:07:20,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:07:20,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170707733] [2023-11-29 07:07:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:20,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:07:21,763 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:07:21,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650710772] [2023-11-29 07:07:21,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:07:21,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:07:21,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:07:21,764 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:07:21,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26dad07e-8575-465e-ad59-bcd87fe8a6eb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 07:07:25,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 07:07:25,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:07:25,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 07:07:25,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:07:25,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 07:07:25,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 22 [2023-11-29 07:07:33,937 WARN L293 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:07:55,785 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:08:07,888 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:08:15,917 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:08:41,847 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:08:54,022 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:09:06,193 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:09:14,245 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:09:22,294 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:09:34,208 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:09:42,225 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:09:54,938 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:10:02,959 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:10:10,980 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:10:19,003 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:10:31,379 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:10:39,401 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:10:51,569 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:10:59,588 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:11:07,664 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:11:13,754 WARN L293 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:11:21,827 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:11:29,862 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:11:37,887 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:11:45,962 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:11:54,199 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:12:02,230 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:12:10,251 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:12:18,285 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:12:26,342 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:12:38,565 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:12:46,587 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:12:54,617 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:13:02,667 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:13:10,771 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:13:18,814 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:13:30,985 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:13:39,021 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:13:51,976 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:14:00,008 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:14:08,081 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:14:20,148 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:14:28,176 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:14:36,215 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:14:44,249 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:14:52,324 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:15:00,434 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:15:08,469 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:15:16,491 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:15:24,706 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:15:32,745 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:15:40,783 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:15:48,808 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:15:56,892 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:16:04,921 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:16:12,982 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:16:25,195 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:16:33,230 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:16:41,311 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:16:49,335 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:16:57,360 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:17:05,407 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:17:17,692 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:17:29,842 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:17:37,886 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:17:45,908 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:17:58,623 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:18:06,718 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:18:14,748 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:18:22,779 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:18:30,809 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:18:38,829 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:18:46,871 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:18:52,891 WARN L293 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:19:00,921 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:19:08,961 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:19:16,993 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:19:25,013 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:19:33,109 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:19:41,160 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:19:49,195 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:20:00,470 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:20:12,543 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:20:20,573 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:20:28,603 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:20:36,662 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)