./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/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_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:46:28,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:46:28,080 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:46:28,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:46:28,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:46:28,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:46:28,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:46:28,109 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:46:28,110 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:46:28,110 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:46:28,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:46:28,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:46:28,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:46:28,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:46:28,113 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:46:28,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:46:28,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:46:28,115 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:46:28,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:46:28,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:46:28,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:46:28,120 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:46:28,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:46:28,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:46:28,121 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:46:28,121 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:46:28,122 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:46:28,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:46:28,122 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:46:28,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:46:28,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:46:28,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:46:28,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:46:28,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:46:28,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:46:28,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:46:28,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:46:28,125 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:46:28,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:46:28,125 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:46:28,125 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:46:28,126 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:46:28,126 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:46:28,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:46:28,126 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_af5e1d85-bb1b-4832-a978-975d196333d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 [2023-11-29 01:46:28,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:46:28,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:46:28,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:46:28,376 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:46:28,377 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:46:28,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2023-11-29 01:46:31,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:46:31,554 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:46:31,554 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2023-11-29 01:46:31,573 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/data/a6b3ed2a4/01eff7e27ca54f92b12e2ca238af8763/FLAG677f9d64e [2023-11-29 01:46:31,587 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/data/a6b3ed2a4/01eff7e27ca54f92b12e2ca238af8763 [2023-11-29 01:46:31,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:46:31,591 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:46:31,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:46:31,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:46:31,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:46:31,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:46:31" (1/1) ... [2023-11-29 01:46:31,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f339051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:31, skipping insertion in model container [2023-11-29 01:46:31,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:46:31" (1/1) ... [2023-11-29 01:46:31,684 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:46:32,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:46:32,325 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:46:32,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:46:32,462 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:46:32,468 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:46:32,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32 WrapperNode [2023-11-29 01:46:32,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:46:32,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:46:32,470 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:46:32,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:46:32,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,601 INFO L138 Inliner]: procedures = 282, calls = 351, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1552 [2023-11-29 01:46:32,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:46:32,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:46:32,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:46:32,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:46:32,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,627 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,742 INFO L175 MemorySlicer]: Split 314 memory accesses to 5 slices as follows [2, 34, 5, 3, 270]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 64 writes are split as follows [0, 4, 1, 2, 57]. [2023-11-29 01:46:32,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,781 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,809 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:46:32,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:46:32,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:46:32,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:46:32,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (1/1) ... [2023-11-29 01:46:32,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:46:32,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:32,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:46:32,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:46:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-29 01:46:32,898 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-29 01:46:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:46:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 01:46:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:46:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:46:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:46:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:46:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 01:46:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:46:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-29 01:46:32,900 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-29 01:46:32,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:46:32,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:46:32,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:46:32,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:46:32,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:46:32,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:46:32,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:46:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:46:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:46:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:46:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:46:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:46:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:46:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:46:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-29 01:46:32,902 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-29 01:46:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:46:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:46:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:46:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:46:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 01:46:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-29 01:46:32,902 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-29 01:46:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:46:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:46:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:46:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:46:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:46:32,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:46:32,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:46:33,124 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:46:33,126 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:46:34,537 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:46:34,586 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:46:34,586 INFO L309 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-29 01:46:34,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:46:34 BoogieIcfgContainer [2023-11-29 01:46:34,587 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:46:34,589 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:46:34,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:46:34,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:46:34,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:46:31" (1/3) ... [2023-11-29 01:46:34,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f26bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:46:34, skipping insertion in model container [2023-11-29 01:46:34,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:46:32" (2/3) ... [2023-11-29 01:46:34,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f26bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:46:34, skipping insertion in model container [2023-11-29 01:46:34,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:46:34" (3/3) ... [2023-11-29 01:46:34,595 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-2.i [2023-11-29 01:46:34,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:46:34,609 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 01:46:34,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:46:34,667 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;@6973b305, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:46:34,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-29 01:46:34,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 447 states, 408 states have (on average 1.6862745098039216) internal successors, (688), 425 states have internal predecessors, (688), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 01:46:34,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 01:46:34,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:34,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:46:34,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:34,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:34,684 INFO L85 PathProgramCache]: Analyzing trace with hash -620020903, now seen corresponding path program 1 times [2023-11-29 01:46:34,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:34,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041123302] [2023-11-29 01:46:34,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:34,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:34,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041123302] [2023-11-29 01:46:34,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:46:34,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849497592] [2023-11-29 01:46:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:34,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:34,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:34,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:34,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:46:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:35,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:46:35,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:35,126 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 01:46:35,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:35,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849497592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:35,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:35,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:46:35,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212042041] [2023-11-29 01:46:35,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:35,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:46:35,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:35,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:46:35,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:46:35,163 INFO L87 Difference]: Start difference. First operand has 447 states, 408 states have (on average 1.6862745098039216) internal successors, (688), 425 states have internal predecessors, (688), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:35,253 INFO L93 Difference]: Finished difference Result 888 states and 1462 transitions. [2023-11-29 01:46:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:46:35,255 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 01:46:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:35,270 INFO L225 Difference]: With dead ends: 888 [2023-11-29 01:46:35,270 INFO L226 Difference]: Without dead ends: 435 [2023-11-29 01:46:35,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:46:35,280 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:35,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 632 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:46:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-11-29 01:46:35,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2023-11-29 01:46:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 402 states have (on average 1.4950248756218905) internal successors, (601), 416 states have internal predecessors, (601), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 01:46:35,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 631 transitions. [2023-11-29 01:46:35,352 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 631 transitions. Word has length 6 [2023-11-29 01:46:35,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:35,353 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 631 transitions. [2023-11-29 01:46:35,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:35,353 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 631 transitions. [2023-11-29 01:46:35,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 01:46:35,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:35,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:46:35,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:46:35,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:46:35,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:35,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash -620018981, now seen corresponding path program 1 times [2023-11-29 01:46:35,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:35,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872428638] [2023-11-29 01:46:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:35,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:35,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:35,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177922935] [2023-11-29 01:46:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:35,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:35,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:35,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:35,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:46:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:35,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:46:35,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:35,833 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 01:46:35,865 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 01:46:35,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:35,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872428638] [2023-11-29 01:46:35,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:35,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177922935] [2023-11-29 01:46:35,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177922935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:35,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:35,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:46:35,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300789039] [2023-11-29 01:46:35,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:35,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:46:35,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:35,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:46:35,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:46:35,869 INFO L87 Difference]: Start difference. First operand 435 states and 631 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:36,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:36,070 INFO L93 Difference]: Finished difference Result 841 states and 1234 transitions. [2023-11-29 01:46:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:46:36,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 01:46:36,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:36,097 INFO L225 Difference]: With dead ends: 841 [2023-11-29 01:46:36,098 INFO L226 Difference]: Without dead ends: 839 [2023-11-29 01:46:36,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:46:36,100 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 568 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:36,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1861 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:46:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-11-29 01:46:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 441. [2023-11-29 01:46:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 408 states have (on average 1.4901960784313726) internal successors, (608), 422 states have internal predecessors, (608), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 01:46:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 638 transitions. [2023-11-29 01:46:36,136 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 638 transitions. Word has length 6 [2023-11-29 01:46:36,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:36,137 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 638 transitions. [2023-11-29 01:46:36,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:36,137 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 638 transitions. [2023-11-29 01:46:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 01:46:36,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:36,140 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:36,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:46:36,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:36,341 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:36,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:36,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1360533943, now seen corresponding path program 1 times [2023-11-29 01:46:36,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:36,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065945410] [2023-11-29 01:46:36,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:36,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 01:46:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 01:46:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 01:46:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:46:36,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:36,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065945410] [2023-11-29 01:46:36,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065945410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:36,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:36,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:46:36,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295470081] [2023-11-29 01:46:36,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:36,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:46:36,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:36,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:46:36,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:46:36,581 INFO L87 Difference]: Start difference. First operand 441 states and 638 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 01:46:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:36,768 INFO L93 Difference]: Finished difference Result 1068 states and 1564 transitions. [2023-11-29 01:46:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:46:36,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2023-11-29 01:46:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:36,775 INFO L225 Difference]: With dead ends: 1068 [2023-11-29 01:46:36,775 INFO L226 Difference]: Without dead ends: 838 [2023-11-29 01:46:36,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 01:46:36,777 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 569 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:36,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1892 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:46:36,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2023-11-29 01:46:36,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 441. [2023-11-29 01:46:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 408 states have (on average 1.4877450980392157) internal successors, (607), 422 states have internal predecessors, (607), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 01:46:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 637 transitions. [2023-11-29 01:46:36,801 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 637 transitions. Word has length 33 [2023-11-29 01:46:36,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:36,801 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 637 transitions. [2023-11-29 01:46:36,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 01:46:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 637 transitions. [2023-11-29 01:46:36,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 01:46:36,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:36,804 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] [2023-11-29 01:46:36,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:46:36,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:36,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:36,805 INFO L85 PathProgramCache]: Analyzing trace with hash 652069050, now seen corresponding path program 1 times [2023-11-29 01:46:36,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:36,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133727038] [2023-11-29 01:46:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:36,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:36,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:36,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825682062] [2023-11-29 01:46:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:36,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:36,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:36,840 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:36,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:46:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:37,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:46:37,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:37,120 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 01:46:37,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:37,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:37,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133727038] [2023-11-29 01:46:37,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:37,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825682062] [2023-11-29 01:46:37,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825682062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:37,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:37,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:46:37,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402461016] [2023-11-29 01:46:37,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:37,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:46:37,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:37,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:46:37,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:46:37,124 INFO L87 Difference]: Start difference. First operand 441 states and 637 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:37,234 INFO L93 Difference]: Finished difference Result 896 states and 1298 transitions. [2023-11-29 01:46:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:46:37,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 01:46:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:37,238 INFO L225 Difference]: With dead ends: 896 [2023-11-29 01:46:37,238 INFO L226 Difference]: Without dead ends: 462 [2023-11-29 01:46:37,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 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 01:46:37,241 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 9 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:37,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1192 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:46:37,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-29 01:46:37,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 461. [2023-11-29 01:46:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 428 states have (on average 1.4649532710280373) internal successors, (627), 442 states have internal predecessors, (627), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 01:46:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 657 transitions. [2023-11-29 01:46:37,259 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 657 transitions. Word has length 62 [2023-11-29 01:46:37,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:37,260 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 657 transitions. [2023-11-29 01:46:37,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 657 transitions. [2023-11-29 01:46:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 01:46:37,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:37,263 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] [2023-11-29 01:46:37,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:46:37,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:37,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:37,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:37,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1593510404, now seen corresponding path program 1 times [2023-11-29 01:46:37,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:37,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011136816] [2023-11-29 01:46:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:37,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:37,498 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:37,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464988999] [2023-11-29 01:46:37,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:37,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:37,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:37,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:37,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:46:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:37,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:46:37,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:37,766 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 01:46:37,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:37,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:37,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011136816] [2023-11-29 01:46:37,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:37,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464988999] [2023-11-29 01:46:37,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464988999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:37,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:37,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:46:37,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022189295] [2023-11-29 01:46:37,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:37,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:46:37,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:46:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:46:37,769 INFO L87 Difference]: Start difference. First operand 461 states and 657 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:37,874 INFO L93 Difference]: Finished difference Result 902 states and 1294 transitions. [2023-11-29 01:46:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:46:37,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 01:46:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:37,879 INFO L225 Difference]: With dead ends: 902 [2023-11-29 01:46:37,879 INFO L226 Difference]: Without dead ends: 448 [2023-11-29 01:46:37,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 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 01:46:37,881 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 165 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:37,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1636 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:46:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-11-29 01:46:37,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 447. [2023-11-29 01:46:37,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 414 states have (on average 1.463768115942029) internal successors, (606), 428 states have internal predecessors, (606), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 01:46:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 636 transitions. [2023-11-29 01:46:37,896 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 636 transitions. Word has length 62 [2023-11-29 01:46:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:37,897 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 636 transitions. [2023-11-29 01:46:37,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:37,897 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 636 transitions. [2023-11-29 01:46:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 01:46:37,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:37,899 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] [2023-11-29 01:46:37,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:46:38,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:38,104 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:38,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:38,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1885403438, now seen corresponding path program 1 times [2023-11-29 01:46:38,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:38,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785190456] [2023-11-29 01:46:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:38,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:38,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:38,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324650154] [2023-11-29 01:46:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:38,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:38,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:38,142 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:38,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:46:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:38,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:46:38,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:38,503 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 01:46:38,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:38,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:38,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785190456] [2023-11-29 01:46:38,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:38,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324650154] [2023-11-29 01:46:38,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324650154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:38,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:38,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:46:38,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343517458] [2023-11-29 01:46:38,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:38,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:46:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:46:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:46:38,506 INFO L87 Difference]: Start difference. First operand 447 states and 636 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:38,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:38,610 INFO L93 Difference]: Finished difference Result 870 states and 1248 transitions. [2023-11-29 01:46:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:46:38,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 01:46:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:38,618 INFO L225 Difference]: With dead ends: 870 [2023-11-29 01:46:38,618 INFO L226 Difference]: Without dead ends: 868 [2023-11-29 01:46:38,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 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 01:46:38,620 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 544 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:38,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1915 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:46:38,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2023-11-29 01:46:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 856. [2023-11-29 01:46:38,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 808 states have (on average 1.4690594059405941) internal successors, (1187), 824 states have internal predecessors, (1187), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2023-11-29 01:46:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1244 transitions. [2023-11-29 01:46:38,655 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1244 transitions. Word has length 62 [2023-11-29 01:46:38,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:38,655 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1244 transitions. [2023-11-29 01:46:38,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:38,655 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1244 transitions. [2023-11-29 01:46:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 01:46:38,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:38,657 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] [2023-11-29 01:46:38,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:46:38,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:46:38,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:38,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:38,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1682035525, now seen corresponding path program 1 times [2023-11-29 01:46:38,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:38,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509805701] [2023-11-29 01:46:38,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:38,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:38,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:38,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330736790] [2023-11-29 01:46:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:38,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:38,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:38,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:38,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:46:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:39,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:46:39,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:39,221 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 01:46:39,221 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:39,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:39,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509805701] [2023-11-29 01:46:39,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:39,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330736790] [2023-11-29 01:46:39,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330736790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:39,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:39,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:46:39,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916629137] [2023-11-29 01:46:39,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:39,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:46:39,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:39,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:46:39,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:46:39,225 INFO L87 Difference]: Start difference. First operand 856 states and 1244 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:39,325 INFO L93 Difference]: Finished difference Result 1453 states and 2119 transitions. [2023-11-29 01:46:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:46:39,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-29 01:46:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:39,336 INFO L225 Difference]: With dead ends: 1453 [2023-11-29 01:46:39,336 INFO L226 Difference]: Without dead ends: 1451 [2023-11-29 01:46:39,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 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 01:46:39,337 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 485 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:39,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1828 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:46:39,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2023-11-29 01:46:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1443. [2023-11-29 01:46:39,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1378 states have (on average 1.474600870827286) internal successors, (2032), 1396 states have internal predecessors, (2032), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2023-11-29 01:46:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2117 transitions. [2023-11-29 01:46:39,400 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2117 transitions. Word has length 63 [2023-11-29 01:46:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:39,400 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 2117 transitions. [2023-11-29 01:46:39,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2117 transitions. [2023-11-29 01:46:39,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 01:46:39,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:39,402 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, 1, 1, 1, 1] [2023-11-29 01:46:39,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:46:39,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 01:46:39,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:39,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash -304228015, now seen corresponding path program 1 times [2023-11-29 01:46:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:39,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636450640] [2023-11-29 01:46:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:39,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:39,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:39,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51090575] [2023-11-29 01:46:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:39,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:39,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:39,633 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:39,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:46:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:39,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:46:39,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:39,997 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 01:46:39,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:39,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:39,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636450640] [2023-11-29 01:46:39,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:39,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51090575] [2023-11-29 01:46:39,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51090575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:39,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:39,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:46:39,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736023784] [2023-11-29 01:46:39,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:39,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:46:39,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:46:40,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:46:40,000 INFO L87 Difference]: Start difference. First operand 1443 states and 2117 transitions. Second operand has 3 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:46:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:40,042 INFO L93 Difference]: Finished difference Result 1443 states and 2117 transitions. [2023-11-29 01:46:40,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:46:40,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-11-29 01:46:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:40,050 INFO L225 Difference]: With dead ends: 1443 [2023-11-29 01:46:40,050 INFO L226 Difference]: Without dead ends: 1442 [2023-11-29 01:46:40,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 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 01:46:40,051 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 552 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:40,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:46:40,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2023-11-29 01:46:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1442. [2023-11-29 01:46:40,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1378 states have (on average 1.4731494920174166) internal successors, (2030), 1395 states have internal predecessors, (2030), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2023-11-29 01:46:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2115 transitions. [2023-11-29 01:46:40,090 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2115 transitions. Word has length 71 [2023-11-29 01:46:40,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:40,090 INFO L495 AbstractCegarLoop]: Abstraction has 1442 states and 2115 transitions. [2023-11-29 01:46:40,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:46:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2115 transitions. [2023-11-29 01:46:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 01:46:40,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:40,092 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, 1, 1, 1, 1, 1] [2023-11-29 01:46:40,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:46:40,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:40,292 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:40,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash -841133804, now seen corresponding path program 1 times [2023-11-29 01:46:40,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:40,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537113887] [2023-11-29 01:46:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:40,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:40,317 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:40,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682547700] [2023-11-29 01:46:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:40,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:40,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:40,319 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:40,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:46:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:40,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:46:40,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:40,685 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 01:46:40,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:40,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537113887] [2023-11-29 01:46:40,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682547700] [2023-11-29 01:46:40,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682547700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:40,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:40,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:46:40,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384696215] [2023-11-29 01:46:40,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:40,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:46:40,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:40,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:46:40,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:46:40,688 INFO L87 Difference]: Start difference. First operand 1442 states and 2115 transitions. Second operand has 3 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:46:40,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:40,752 INFO L93 Difference]: Finished difference Result 1469 states and 2135 transitions. [2023-11-29 01:46:40,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:46:40,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-11-29 01:46:40,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:40,760 INFO L225 Difference]: With dead ends: 1469 [2023-11-29 01:46:40,760 INFO L226 Difference]: Without dead ends: 1468 [2023-11-29 01:46:40,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 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 01:46:40,761 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 491 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:40,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1223 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:46:40,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2023-11-29 01:46:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1459. [2023-11-29 01:46:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1390 states have (on average 1.4697841726618706) internal successors, (2043), 1408 states have internal predecessors, (2043), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2023-11-29 01:46:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2134 transitions. [2023-11-29 01:46:40,806 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2134 transitions. Word has length 72 [2023-11-29 01:46:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:40,806 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2134 transitions. [2023-11-29 01:46:40,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 01:46:40,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2134 transitions. [2023-11-29 01:46:40,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 01:46:40,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:40,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:40,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:46:41,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:41,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:41,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:41,009 INFO L85 PathProgramCache]: Analyzing trace with hash 494764585, now seen corresponding path program 1 times [2023-11-29 01:46:41,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:41,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113958516] [2023-11-29 01:46:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:41,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:41,047 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:41,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821100736] [2023-11-29 01:46:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:41,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:41,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:41,048 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:41,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:46:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:41,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:46:41,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:41,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:41,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:41,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113958516] [2023-11-29 01:46:41,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:41,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821100736] [2023-11-29 01:46:41,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821100736] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:46:41,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:46:41,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-11-29 01:46:41,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933465866] [2023-11-29 01:46:41,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:41,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:46:41,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:41,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:46:41,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:46:41,708 INFO L87 Difference]: Start difference. First operand 1459 states and 2134 transitions. Second operand has 14 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:46:42,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:42,689 INFO L93 Difference]: Finished difference Result 3583 states and 5230 transitions. [2023-11-29 01:46:42,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:46:42,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 79 [2023-11-29 01:46:42,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:42,712 INFO L225 Difference]: With dead ends: 3583 [2023-11-29 01:46:42,712 INFO L226 Difference]: Without dead ends: 3581 [2023-11-29 01:46:42,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=557, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:46:42,715 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 4355 mSDsluCounter, 5815 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 6448 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:42,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 6448 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:46:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3581 states. [2023-11-29 01:46:42,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3581 to 3288. [2023-11-29 01:46:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3147 states have (on average 1.4680648236415634) internal successors, (4620), 3169 states have internal predecessors, (4620), 101 states have call successors, (101), 33 states have call predecessors, (101), 27 states have return successors, (122), 86 states have call predecessors, (122), 101 states have call successors, (122) [2023-11-29 01:46:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 4843 transitions. [2023-11-29 01:46:42,863 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 4843 transitions. Word has length 79 [2023-11-29 01:46:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:42,864 INFO L495 AbstractCegarLoop]: Abstraction has 3288 states and 4843 transitions. [2023-11-29 01:46:42,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 01:46:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 4843 transitions. [2023-11-29 01:46:42,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 01:46:42,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:42,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:42,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:46:43,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:46:43,068 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:43,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:43,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2092260, now seen corresponding path program 1 times [2023-11-29 01:46:43,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:43,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184429257] [2023-11-29 01:46:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:43,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:43,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:43,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996630717] [2023-11-29 01:46:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:43,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:43,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:43,116 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:43,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:46:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:43,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:46:43,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:43,662 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 01:46:43,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:43,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:43,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184429257] [2023-11-29 01:46:43,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:43,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996630717] [2023-11-29 01:46:43,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996630717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:43,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:43,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:46:43,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636613134] [2023-11-29 01:46:43,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:43,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:46:43,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:43,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:46:43,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:46:43,664 INFO L87 Difference]: Start difference. First operand 3288 states and 4843 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:43,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:43,900 INFO L93 Difference]: Finished difference Result 7216 states and 10686 transitions. [2023-11-29 01:46:43,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:46:43,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 01:46:43,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:43,919 INFO L225 Difference]: With dead ends: 7216 [2023-11-29 01:46:43,919 INFO L226 Difference]: Without dead ends: 3935 [2023-11-29 01:46:43,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 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 01:46:43,925 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 390 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:43,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1392 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:46:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2023-11-29 01:46:44,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3717. [2023-11-29 01:46:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3717 states, 3575 states have (on average 1.484195804195804) internal successors, (5306), 3595 states have internal predecessors, (5306), 105 states have call successors, (105), 29 states have call predecessors, (105), 24 states have return successors, (126), 93 states have call predecessors, (126), 105 states have call successors, (126) [2023-11-29 01:46:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 5537 transitions. [2023-11-29 01:46:44,045 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 5537 transitions. Word has length 80 [2023-11-29 01:46:44,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:44,045 INFO L495 AbstractCegarLoop]: Abstraction has 3717 states and 5537 transitions. [2023-11-29 01:46:44,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 5537 transitions. [2023-11-29 01:46:44,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 01:46:44,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:44,047 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:44,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:46:44,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:44,247 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:44,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:44,248 INFO L85 PathProgramCache]: Analyzing trace with hash 279871174, now seen corresponding path program 1 times [2023-11-29 01:46:44,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:44,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288390394] [2023-11-29 01:46:44,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:44,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:44,288 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:44,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099056997] [2023-11-29 01:46:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:44,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:44,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:44,289 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:44,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:46:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:44,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:46:44,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:44,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:46:44,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:44,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288390394] [2023-11-29 01:46:44,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:44,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099056997] [2023-11-29 01:46:44,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099056997] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:46:44,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:46:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-29 01:46:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791431117] [2023-11-29 01:46:44,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:46:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:46:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:46:44,849 INFO L87 Difference]: Start difference. First operand 3717 states and 5537 transitions. Second operand has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 10 states have internal predecessors, (157), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 01:46:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:45,430 INFO L93 Difference]: Finished difference Result 6781 states and 10076 transitions. [2023-11-29 01:46:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:46:45,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 10 states have internal predecessors, (157), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 88 [2023-11-29 01:46:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:45,461 INFO L225 Difference]: With dead ends: 6781 [2023-11-29 01:46:45,461 INFO L226 Difference]: Without dead ends: 6780 [2023-11-29 01:46:45,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:46:45,464 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 2731 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2750 SdHoareTripleChecker+Valid, 3353 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:45,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2750 Valid, 3353 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:46:45,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6780 states. [2023-11-29 01:46:45,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6780 to 6349. [2023-11-29 01:46:45,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6349 states, 6102 states have (on average 1.4827925270403146) internal successors, (9048), 6125 states have internal predecessors, (9048), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2023-11-29 01:46:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6349 states to 6349 states and 9449 transitions. [2023-11-29 01:46:45,641 INFO L78 Accepts]: Start accepts. Automaton has 6349 states and 9449 transitions. Word has length 88 [2023-11-29 01:46:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:45,642 INFO L495 AbstractCegarLoop]: Abstraction has 6349 states and 9449 transitions. [2023-11-29 01:46:45,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 10 states have internal predecessors, (157), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-29 01:46:45,642 INFO L276 IsEmpty]: Start isEmpty. Operand 6349 states and 9449 transitions. [2023-11-29 01:46:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 01:46:45,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:45,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:45,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:46:45,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:45,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:45,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:45,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1613682208, now seen corresponding path program 1 times [2023-11-29 01:46:45,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:45,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675915392] [2023-11-29 01:46:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:45,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:45,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:45,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571624152] [2023-11-29 01:46:45,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:45,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:45,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:45,888 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:45,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:46:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:46,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:46:46,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:46,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 01:46:46,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:46,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:46,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675915392] [2023-11-29 01:46:46,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:46,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571624152] [2023-11-29 01:46:46,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571624152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:46,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:46,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:46:46,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040331769] [2023-11-29 01:46:46,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:46,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:46:46,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:46,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:46:46,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:46:46,339 INFO L87 Difference]: Start difference. First operand 6349 states and 9449 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:46:46,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:46,674 INFO L93 Difference]: Finished difference Result 12566 states and 18706 transitions. [2023-11-29 01:46:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:46:46,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2023-11-29 01:46:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:46,709 INFO L225 Difference]: With dead ends: 12566 [2023-11-29 01:46:46,710 INFO L226 Difference]: Without dead ends: 6349 [2023-11-29 01:46:46,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:46:46,722 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 142 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:46,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2893 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:46:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6349 states. [2023-11-29 01:46:46,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6349 to 6349. [2023-11-29 01:46:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6349 states, 6102 states have (on average 1.4826286463454605) internal successors, (9047), 6124 states have internal predecessors, (9047), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2023-11-29 01:46:46,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6349 states to 6349 states and 9448 transitions. [2023-11-29 01:46:46,994 INFO L78 Accepts]: Start accepts. Automaton has 6349 states and 9448 transitions. Word has length 112 [2023-11-29 01:46:46,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:46,995 INFO L495 AbstractCegarLoop]: Abstraction has 6349 states and 9448 transitions. [2023-11-29 01:46:46,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:46:46,995 INFO L276 IsEmpty]: Start isEmpty. Operand 6349 states and 9448 transitions. [2023-11-29 01:46:46,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 01:46:46,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:46,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:47,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:46:47,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:46:47,199 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:46:47,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:47,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1096075042, now seen corresponding path program 1 times [2023-11-29 01:46:47,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:47,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149809141] [2023-11-29 01:46:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:47,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:46:47,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403993850] [2023-11-29 01:46:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:47,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:47,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:47,247 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:47,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:46:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:47,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:46:47,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:47,638 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 15 treesize of output 1 [2023-11-29 01:46:47,891 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 01:46:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 01:46:47,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:46:47,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:47,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149809141] [2023-11-29 01:46:47,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:46:47,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403993850] [2023-11-29 01:46:47,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403993850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:46:47,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:46:47,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:46:47,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094929768] [2023-11-29 01:46:47,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:46:47,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:46:47,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:47,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:46:47,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:46:47,902 INFO L87 Difference]: Start difference. First operand 6349 states and 9448 transitions. Second operand has 5 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:46:52,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:46:56,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:00,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:04,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:08,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:08,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:08,451 INFO L93 Difference]: Finished difference Result 8867 states and 13153 transitions. [2023-11-29 01:47:08,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:47:08,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 117 [2023-11-29 01:47:08,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:08,470 INFO L225 Difference]: With dead ends: 8867 [2023-11-29 01:47:08,470 INFO L226 Difference]: Without dead ends: 8866 [2023-11-29 01:47:08,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 7 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:47:08,473 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 985 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 14 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:08,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1486 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 126 Invalid, 5 Unknown, 0 Unchecked, 20.4s Time] [2023-11-29 01:47:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2023-11-29 01:47:08,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 6014. [2023-11-29 01:47:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6014 states, 5752 states have (on average 1.4732267037552156) internal successors, (8474), 5779 states have internal predecessors, (8474), 193 states have call successors, (193), 69 states have call predecessors, (193), 57 states have return successors, (226), 165 states have call predecessors, (226), 193 states have call successors, (226) [2023-11-29 01:47:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6014 states to 6014 states and 8893 transitions. [2023-11-29 01:47:08,684 INFO L78 Accepts]: Start accepts. Automaton has 6014 states and 8893 transitions. Word has length 117 [2023-11-29 01:47:08,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:08,684 INFO L495 AbstractCegarLoop]: Abstraction has 6014 states and 8893 transitions. [2023-11-29 01:47:08,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:47:08,685 INFO L276 IsEmpty]: Start isEmpty. Operand 6014 states and 8893 transitions. [2023-11-29 01:47:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 01:47:08,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:08,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:08,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:47:08,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:47:08,887 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:08,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash -381411248, now seen corresponding path program 1 times [2023-11-29 01:47:08,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:08,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465592917] [2023-11-29 01:47:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:08,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:08,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:08,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432399214] [2023-11-29 01:47:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:08,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:08,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:08,933 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:08,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:47:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:09,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:47:09,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:09,613 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 01:47:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 01:47:09,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:47:09,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:09,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465592917] [2023-11-29 01:47:09,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:09,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432399214] [2023-11-29 01:47:09,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432399214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:09,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:09,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:47:09,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435380243] [2023-11-29 01:47:09,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:09,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:47:09,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:47:09,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:47:09,624 INFO L87 Difference]: Start difference. First operand 6014 states and 8893 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:47:10,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:10,140 INFO L93 Difference]: Finished difference Result 6283 states and 9256 transitions. [2023-11-29 01:47:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:47:10,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 118 [2023-11-29 01:47:10,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:10,155 INFO L225 Difference]: With dead ends: 6283 [2023-11-29 01:47:10,155 INFO L226 Difference]: Without dead ends: 6282 [2023-11-29 01:47:10,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 7 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:47:10,157 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 981 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:10,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 2045 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:47:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2023-11-29 01:47:10,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6013. [2023-11-29 01:47:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6013 states, 5752 states have (on average 1.4713143254520167) internal successors, (8463), 5778 states have internal predecessors, (8463), 193 states have call successors, (193), 69 states have call predecessors, (193), 57 states have return successors, (226), 165 states have call predecessors, (226), 193 states have call successors, (226) [2023-11-29 01:47:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6013 states to 6013 states and 8882 transitions. [2023-11-29 01:47:10,371 INFO L78 Accepts]: Start accepts. Automaton has 6013 states and 8882 transitions. Word has length 118 [2023-11-29 01:47:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:10,372 INFO L495 AbstractCegarLoop]: Abstraction has 6013 states and 8882 transitions. [2023-11-29 01:47:10,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:47:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 6013 states and 8882 transitions. [2023-11-29 01:47:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 01:47:10,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:10,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:10,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:47:10,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:47:10,580 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:10,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:10,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1823061689, now seen corresponding path program 1 times [2023-11-29 01:47:10,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:10,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092386676] [2023-11-29 01:47:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:10,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:10,624 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237181279] [2023-11-29 01:47:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:10,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:10,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:10,626 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:10,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:47:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:11,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:47:11,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:11,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:47:11,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:11,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092386676] [2023-11-29 01:47:11,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:11,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237181279] [2023-11-29 01:47:11,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237181279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:11,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:11,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:47:11,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533040906] [2023-11-29 01:47:11,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:11,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:47:11,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:47:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:47:11,120 INFO L87 Difference]: Start difference. First operand 6013 states and 8882 transitions. Second operand has 9 states, 8 states have (on average 14.125) internal successors, (113), 9 states have internal predecessors, (113), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 01:47:11,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:11,480 INFO L93 Difference]: Finished difference Result 10410 states and 15389 transitions. [2023-11-29 01:47:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:47:11,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.125) internal successors, (113), 9 states have internal predecessors, (113), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 123 [2023-11-29 01:47:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:11,490 INFO L225 Difference]: With dead ends: 10410 [2023-11-29 01:47:11,491 INFO L226 Difference]: Without dead ends: 4518 [2023-11-29 01:47:11,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:47:11,500 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 23 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4753 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:11,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4753 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:47:11,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2023-11-29 01:47:11,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 4516. [2023-11-29 01:47:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 4315 states have (on average 1.4743916570104287) internal successors, (6362), 4338 states have internal predecessors, (6362), 137 states have call successors, (137), 59 states have call predecessors, (137), 53 states have return successors, (149), 118 states have call predecessors, (149), 137 states have call successors, (149) [2023-11-29 01:47:11,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 6648 transitions. [2023-11-29 01:47:11,655 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 6648 transitions. Word has length 123 [2023-11-29 01:47:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:11,656 INFO L495 AbstractCegarLoop]: Abstraction has 4516 states and 6648 transitions. [2023-11-29 01:47:11,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.125) internal successors, (113), 9 states have internal predecessors, (113), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 01:47:11,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 6648 transitions. [2023-11-29 01:47:11,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 01:47:11,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:11,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:11,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 01:47:11,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:47:11,858 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:11,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:11,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1198226997, now seen corresponding path program 1 times [2023-11-29 01:47:11,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:11,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139488001] [2023-11-29 01:47:11,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:11,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:11,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638528717] [2023-11-29 01:47:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:11,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:11,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:11,905 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:11,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:47:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:12,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 128 conjunts are in the unsatisfiable core [2023-11-29 01:47:12,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:12,392 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 01:47:12,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:47:12,433 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 01:47:12,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 01:47:13,100 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 0 case distinctions, treesize of input 39 treesize of output 23 [2023-11-29 01:47:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:47:13,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:47:13,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:13,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139488001] [2023-11-29 01:47:13,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:13,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638528717] [2023-11-29 01:47:13,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638528717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:13,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:13,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 01:47:13,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251079941] [2023-11-29 01:47:13,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:13,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:47:13,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:47:13,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:47:13,305 INFO L87 Difference]: Start difference. First operand 4516 states and 6648 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:47:15,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:15,679 INFO L93 Difference]: Finished difference Result 9322 states and 13676 transitions. [2023-11-29 01:47:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:47:15,679 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 125 [2023-11-29 01:47:15,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:15,688 INFO L225 Difference]: With dead ends: 9322 [2023-11-29 01:47:15,688 INFO L226 Difference]: Without dead ends: 4889 [2023-11-29 01:47:15,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:47:15,693 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1004 mSDsluCounter, 3140 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:15,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 3721 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 01:47:15,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2023-11-29 01:47:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 4548. [2023-11-29 01:47:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4548 states, 4347 states have (on average 1.4720496894409938) internal successors, (6399), 4370 states have internal predecessors, (6399), 137 states have call successors, (137), 59 states have call predecessors, (137), 53 states have return successors, (149), 118 states have call predecessors, (149), 137 states have call successors, (149) [2023-11-29 01:47:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4548 states to 4548 states and 6685 transitions. [2023-11-29 01:47:15,804 INFO L78 Accepts]: Start accepts. Automaton has 4548 states and 6685 transitions. Word has length 125 [2023-11-29 01:47:15,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:15,805 INFO L495 AbstractCegarLoop]: Abstraction has 4548 states and 6685 transitions. [2023-11-29 01:47:15,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:47:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4548 states and 6685 transitions. [2023-11-29 01:47:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 01:47:15,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:15,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:15,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 01:47:16,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:47:16,007 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:16,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:16,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2065699401, now seen corresponding path program 1 times [2023-11-29 01:47:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:16,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724344799] [2023-11-29 01:47:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:16,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:16,048 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:16,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126147621] [2023-11-29 01:47:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:16,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:16,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:16,050 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:16,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:47:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:16,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:47:16,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:47:16,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:47:16,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:16,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724344799] [2023-11-29 01:47:16,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:16,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126147621] [2023-11-29 01:47:16,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126147621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:16,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:16,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:47:16,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191232775] [2023-11-29 01:47:16,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:16,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:47:16,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:16,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:47:16,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:47:16,545 INFO L87 Difference]: Start difference. First operand 4548 states and 6685 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:47:16,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:16,742 INFO L93 Difference]: Finished difference Result 9731 states and 14375 transitions. [2023-11-29 01:47:16,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:47:16,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 125 [2023-11-29 01:47:16,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:16,752 INFO L225 Difference]: With dead ends: 9731 [2023-11-29 01:47:16,752 INFO L226 Difference]: Without dead ends: 5286 [2023-11-29 01:47:16,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:47:16,758 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 148 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:16,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1780 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:47:16,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2023-11-29 01:47:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 4686. [2023-11-29 01:47:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4686 states, 4485 states have (on average 1.4595317725752508) internal successors, (6546), 4508 states have internal predecessors, (6546), 137 states have call successors, (137), 59 states have call predecessors, (137), 53 states have return successors, (149), 118 states have call predecessors, (149), 137 states have call successors, (149) [2023-11-29 01:47:16,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 6832 transitions. [2023-11-29 01:47:16,905 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 6832 transitions. Word has length 125 [2023-11-29 01:47:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:16,905 INFO L495 AbstractCegarLoop]: Abstraction has 4686 states and 6832 transitions. [2023-11-29 01:47:16,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:47:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 6832 transitions. [2023-11-29 01:47:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 01:47:16,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:16,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:16,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:47:17,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:47:17,107 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:17,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:17,108 INFO L85 PathProgramCache]: Analyzing trace with hash 82785463, now seen corresponding path program 1 times [2023-11-29 01:47:17,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:17,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451385009] [2023-11-29 01:47:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:17,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:17,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:17,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283111395] [2023-11-29 01:47:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:17,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:17,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:17,158 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:17,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:47:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:17,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 01:47:17,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:17,608 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 01:47:17,633 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 01:47:17,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 01:47:18,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:47:18,058 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 39 treesize of output 23 [2023-11-29 01:47:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:47:18,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:47:18,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:18,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451385009] [2023-11-29 01:47:18,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:18,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283111395] [2023-11-29 01:47:18,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283111395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:18,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:18,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 01:47:18,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318601042] [2023-11-29 01:47:18,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:18,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:47:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:18,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:47:18,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:47:18,381 INFO L87 Difference]: Start difference. First operand 4686 states and 6832 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:47:21,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:21,680 INFO L93 Difference]: Finished difference Result 9598 states and 13974 transitions. [2023-11-29 01:47:21,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:47:21,681 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 126 [2023-11-29 01:47:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:21,695 INFO L225 Difference]: With dead ends: 9598 [2023-11-29 01:47:21,695 INFO L226 Difference]: Without dead ends: 5027 [2023-11-29 01:47:21,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:47:21,704 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 1104 mSDsluCounter, 4622 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 5177 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:21,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 5177 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 01:47:21,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2023-11-29 01:47:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 4688. [2023-11-29 01:47:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4688 states, 4487 states have (on average 1.4593269445063517) internal successors, (6548), 4510 states have internal predecessors, (6548), 137 states have call successors, (137), 59 states have call predecessors, (137), 53 states have return successors, (149), 118 states have call predecessors, (149), 137 states have call successors, (149) [2023-11-29 01:47:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4688 states to 4688 states and 6834 transitions. [2023-11-29 01:47:21,889 INFO L78 Accepts]: Start accepts. Automaton has 4688 states and 6834 transitions. Word has length 126 [2023-11-29 01:47:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:21,889 INFO L495 AbstractCegarLoop]: Abstraction has 4688 states and 6834 transitions. [2023-11-29 01:47:21,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:47:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 4688 states and 6834 transitions. [2023-11-29 01:47:21,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 01:47:21,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:21,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:21,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:47:22,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:22,092 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:22,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:22,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2138590286, now seen corresponding path program 1 times [2023-11-29 01:47:22,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:22,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448358175] [2023-11-29 01:47:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:22,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:22,141 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:22,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987254649] [2023-11-29 01:47:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:22,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:22,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:22,143 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:22,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:47:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:22,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:47:22,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 01:47:22,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:47:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:47:22,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:22,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448358175] [2023-11-29 01:47:22,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:22,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987254649] [2023-11-29 01:47:22,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987254649] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:47:22,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:47:22,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2023-11-29 01:47:22,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452515946] [2023-11-29 01:47:22,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:47:22,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:47:22,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:22,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:47:22,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:47:22,906 INFO L87 Difference]: Start difference. First operand 4688 states and 6834 transitions. Second operand has 14 states, 12 states have (on average 11.333333333333334) internal successors, (136), 14 states have internal predecessors, (136), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:47:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:23,515 INFO L93 Difference]: Finished difference Result 9279 states and 13565 transitions. [2023-11-29 01:47:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:47:23,515 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 11.333333333333334) internal successors, (136), 14 states have internal predecessors, (136), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 127 [2023-11-29 01:47:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:23,527 INFO L225 Difference]: With dead ends: 9279 [2023-11-29 01:47:23,527 INFO L226 Difference]: Without dead ends: 4760 [2023-11-29 01:47:23,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:47:23,535 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 39 mSDsluCounter, 6538 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 7138 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:23,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 7138 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:47:23,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4760 states. [2023-11-29 01:47:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4760 to 4743. [2023-11-29 01:47:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4743 states, 4540 states have (on average 1.4601321585903084) internal successors, (6629), 4559 states have internal predecessors, (6629), 137 states have call successors, (137), 65 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-29 01:47:23,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4743 states to 4743 states and 6911 transitions. [2023-11-29 01:47:23,712 INFO L78 Accepts]: Start accepts. Automaton has 4743 states and 6911 transitions. Word has length 127 [2023-11-29 01:47:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:23,712 INFO L495 AbstractCegarLoop]: Abstraction has 4743 states and 6911 transitions. [2023-11-29 01:47:23,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 11.333333333333334) internal successors, (136), 14 states have internal predecessors, (136), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:47:23,713 INFO L276 IsEmpty]: Start isEmpty. Operand 4743 states and 6911 transitions. [2023-11-29 01:47:23,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 01:47:23,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:23,714 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:23,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:47:23,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:23,915 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:23,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1710166350, now seen corresponding path program 2 times [2023-11-29 01:47:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:23,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3460791] [2023-11-29 01:47:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:23,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:23,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:23,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742144186] [2023-11-29 01:47:23,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:47:23,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:23,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:23,995 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:23,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:47:24,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:47:24,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:47:24,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:47:24,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:24,402 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 01:47:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 01:47:24,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:47:24,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:24,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3460791] [2023-11-29 01:47:24,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:24,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742144186] [2023-11-29 01:47:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742144186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:47:24,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:47:24,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:47:24,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214934464] [2023-11-29 01:47:24,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:47:24,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:47:24,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:24,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:47:24,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:47:24,409 INFO L87 Difference]: Start difference. First operand 4743 states and 6911 transitions. Second operand has 3 states, 2 states have (on average 52.5) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:47:24,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:24,575 INFO L93 Difference]: Finished difference Result 4743 states and 6911 transitions. [2023-11-29 01:47:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:47:24,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 52.5) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 131 [2023-11-29 01:47:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:24,588 INFO L225 Difference]: With dead ends: 4743 [2023-11-29 01:47:24,589 INFO L226 Difference]: Without dead ends: 4742 [2023-11-29 01:47:24,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 01:47:24,591 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 2 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:24,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1217 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:47:24,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2023-11-29 01:47:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 4742. [2023-11-29 01:47:24,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4742 states, 4540 states have (on average 1.4588105726872247) internal successors, (6623), 4558 states have internal predecessors, (6623), 137 states have call successors, (137), 65 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-29 01:47:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4742 states to 4742 states and 6905 transitions. [2023-11-29 01:47:24,764 INFO L78 Accepts]: Start accepts. Automaton has 4742 states and 6905 transitions. Word has length 131 [2023-11-29 01:47:24,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:24,764 INFO L495 AbstractCegarLoop]: Abstraction has 4742 states and 6905 transitions. [2023-11-29 01:47:24,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 52.5) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:47:24,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4742 states and 6905 transitions. [2023-11-29 01:47:24,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 01:47:24,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:24,766 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:24,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:47:24,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:47:24,967 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:24,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:24,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1475549195, now seen corresponding path program 1 times [2023-11-29 01:47:24,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:24,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895130120] [2023-11-29 01:47:24,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:24,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:25,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:25,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890244445] [2023-11-29 01:47:25,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:25,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:25,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:25,006 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:25,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:47:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:25,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 01:47:25,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:47:25,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:47:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:47:25,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:25,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895130120] [2023-11-29 01:47:25,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:25,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890244445] [2023-11-29 01:47:25,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890244445] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:47:25,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:47:25,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2023-11-29 01:47:25,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942156488] [2023-11-29 01:47:25,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:47:25,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 01:47:25,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:25,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 01:47:25,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:47:25,839 INFO L87 Difference]: Start difference. First operand 4742 states and 6905 transitions. Second operand has 21 states, 19 states have (on average 7.631578947368421) internal successors, (145), 21 states have internal predecessors, (145), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:47:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:27,117 INFO L93 Difference]: Finished difference Result 9096 states and 13274 transitions. [2023-11-29 01:47:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 01:47:27,120 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.631578947368421) internal successors, (145), 21 states have internal predecessors, (145), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 132 [2023-11-29 01:47:27,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:27,129 INFO L225 Difference]: With dead ends: 9096 [2023-11-29 01:47:27,129 INFO L226 Difference]: Without dead ends: 4380 [2023-11-29 01:47:27,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 01:47:27,138 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 158 mSDsluCounter, 5591 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 6111 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:27,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 6111 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:47:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2023-11-29 01:47:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 4357. [2023-11-29 01:47:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4357 states, 4155 states have (on average 1.4464500601684718) internal successors, (6010), 4173 states have internal predecessors, (6010), 137 states have call successors, (137), 65 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-29 01:47:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4357 states to 4357 states and 6292 transitions. [2023-11-29 01:47:27,359 INFO L78 Accepts]: Start accepts. Automaton has 4357 states and 6292 transitions. Word has length 132 [2023-11-29 01:47:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:27,360 INFO L495 AbstractCegarLoop]: Abstraction has 4357 states and 6292 transitions. [2023-11-29 01:47:27,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.631578947368421) internal successors, (145), 21 states have internal predecessors, (145), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:47:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4357 states and 6292 transitions. [2023-11-29 01:47:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-29 01:47:27,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:27,362 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:27,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:47:27,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 01:47:27,562 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:27,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2006076206, now seen corresponding path program 2 times [2023-11-29 01:47:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:27,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498902604] [2023-11-29 01:47:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:27,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:27,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:27,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139485851] [2023-11-29 01:47:27,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:47:27,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:27,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:27,622 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:27,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:47:31,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:47:31,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:47:31,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 01:47:31,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 9 proven. 124 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 01:47:31,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:47:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 75 proven. 15 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-29 01:47:32,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:32,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498902604] [2023-11-29 01:47:32,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:32,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139485851] [2023-11-29 01:47:32,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139485851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:47:32,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:47:32,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 26 [2023-11-29 01:47:32,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366120915] [2023-11-29 01:47:32,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:47:32,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:47:32,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:32,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:47:32,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:47:32,022 INFO L87 Difference]: Start difference. First operand 4357 states and 6292 transitions. Second operand has 26 states, 24 states have (on average 5.916666666666667) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 01:47:34,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:34,335 INFO L93 Difference]: Finished difference Result 8684 states and 12613 transitions. [2023-11-29 01:47:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 01:47:34,336 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.916666666666667) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 141 [2023-11-29 01:47:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:34,343 INFO L225 Difference]: With dead ends: 8684 [2023-11-29 01:47:34,343 INFO L226 Difference]: Without dead ends: 4451 [2023-11-29 01:47:34,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=608, Invalid=2584, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 01:47:34,350 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 110 mSDsluCounter, 6328 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 6859 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:34,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 6859 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:47:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2023-11-29 01:47:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 4415. [2023-11-29 01:47:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4415 states, 4213 states have (on average 1.4400664609541893) internal successors, (6067), 4229 states have internal predecessors, (6067), 137 states have call successors, (137), 67 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-29 01:47:34,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 6349 transitions. [2023-11-29 01:47:34,574 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 6349 transitions. Word has length 141 [2023-11-29 01:47:34,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:34,574 INFO L495 AbstractCegarLoop]: Abstraction has 4415 states and 6349 transitions. [2023-11-29 01:47:34,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.916666666666667) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-29 01:47:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 6349 transitions. [2023-11-29 01:47:34,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 01:47:34,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:34,576 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:34,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 01:47:34,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:47:34,776 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:34,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1088815989, now seen corresponding path program 3 times [2023-11-29 01:47:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:34,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530166846] [2023-11-29 01:47:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:34,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:34,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:34,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992231831] [2023-11-29 01:47:34,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:47:34,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:34,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:34,835 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:34,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:47:35,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:47:35,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:47:35,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:47:35,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:35,384 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 15 treesize of output 1 [2023-11-29 01:47:35,674 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 01:47:35,723 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 29 treesize of output 13 [2023-11-29 01:47:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-29 01:47:35,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:47:36,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530166846] [2023-11-29 01:47:36,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:36,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992231831] [2023-11-29 01:47:36,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992231831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:47:36,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:47:36,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-29 01:47:36,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422443384] [2023-11-29 01:47:36,252 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:47:36,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:47:36,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:36,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:47:36,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:47:36,254 INFO L87 Difference]: Start difference. First operand 4415 states and 6349 transitions. Second operand has 9 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:47:40,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:44,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:48,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:52,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:56,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:47:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:56,997 INFO L93 Difference]: Finished difference Result 4749 states and 6797 transitions. [2023-11-29 01:47:56,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:47:56,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 148 [2023-11-29 01:47:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:57,005 INFO L225 Difference]: With dead ends: 4749 [2023-11-29 01:47:57,005 INFO L226 Difference]: Without dead ends: 4748 [2023-11-29 01:47:57,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 157 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:47:57,007 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1194 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 19 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:57,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 3030 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 333 Invalid, 5 Unknown, 0 Unchecked, 20.5s Time] [2023-11-29 01:47:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4748 states. [2023-11-29 01:47:57,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4748 to 4414. [2023-11-29 01:47:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4414 states, 4213 states have (on average 1.4386422976501305) internal successors, (6061), 4228 states have internal predecessors, (6061), 137 states have call successors, (137), 67 states have call predecessors, (137), 55 states have return successors, (145), 118 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-29 01:47:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 6343 transitions. [2023-11-29 01:47:57,199 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 6343 transitions. Word has length 148 [2023-11-29 01:47:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:57,199 INFO L495 AbstractCegarLoop]: Abstraction has 4414 states and 6343 transitions. [2023-11-29 01:47:57,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 01:47:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 6343 transitions. [2023-11-29 01:47:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-29 01:47:57,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:57,201 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:57,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 01:47:57,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 01:47:57,402 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:57,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:57,402 INFO L85 PathProgramCache]: Analyzing trace with hash -166337064, now seen corresponding path program 1 times [2023-11-29 01:47:57,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:57,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649030652] [2023-11-29 01:47:57,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:57,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:57,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:57,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055520024] [2023-11-29 01:47:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:57,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:57,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:57,455 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:57,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:47:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:57,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:47:57,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 165 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 01:47:58,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:47:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-29 01:47:58,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:58,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649030652] [2023-11-29 01:47:58,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:47:58,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055520024] [2023-11-29 01:47:58,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055520024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:47:58,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:47:58,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 01:47:58,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385990344] [2023-11-29 01:47:58,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:47:58,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:47:58,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:58,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:47:58,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:47:58,372 INFO L87 Difference]: Start difference. First operand 4414 states and 6343 transitions. Second operand has 15 states, 14 states have (on average 14.428571428571429) internal successors, (202), 14 states have internal predecessors, (202), 5 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 01:47:59,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:59,171 INFO L93 Difference]: Finished difference Result 8464 states and 12350 transitions. [2023-11-29 01:47:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:47:59,172 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 14.428571428571429) internal successors, (202), 14 states have internal predecessors, (202), 5 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 182 [2023-11-29 01:47:59,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:59,185 INFO L225 Difference]: With dead ends: 8464 [2023-11-29 01:47:59,186 INFO L226 Difference]: Without dead ends: 8463 [2023-11-29 01:47:59,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 353 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:47:59,190 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 4739 mSDsluCounter, 3612 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 4238 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:59,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4747 Valid, 4238 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:47:59,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8463 states. [2023-11-29 01:47:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8463 to 7828. [2023-11-29 01:47:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7828 states, 7503 states have (on average 1.4552845528455285) internal successors, (10919), 7526 states have internal predecessors, (10919), 233 states have call successors, (233), 96 states have call predecessors, (233), 83 states have return successors, (241), 205 states have call predecessors, (241), 233 states have call successors, (241) [2023-11-29 01:47:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7828 states to 7828 states and 11393 transitions. [2023-11-29 01:47:59,467 INFO L78 Accepts]: Start accepts. Automaton has 7828 states and 11393 transitions. Word has length 182 [2023-11-29 01:47:59,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:59,468 INFO L495 AbstractCegarLoop]: Abstraction has 7828 states and 11393 transitions. [2023-11-29 01:47:59,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 14.428571428571429) internal successors, (202), 14 states have internal predecessors, (202), 5 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 01:47:59,468 INFO L276 IsEmpty]: Start isEmpty. Operand 7828 states and 11393 transitions. [2023-11-29 01:47:59,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-29 01:47:59,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:59,493 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:47:59,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 01:47:59,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:47:59,693 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:47:59,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:59,694 INFO L85 PathProgramCache]: Analyzing trace with hash -793107697, now seen corresponding path program 1 times [2023-11-29 01:47:59,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:59,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435313583] [2023-11-29 01:47:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:59,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:59,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:47:59,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698120381] [2023-11-29 01:47:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:59,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:59,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:59,752 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:59,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:48:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:00,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 1277 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:48:00,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-29 01:48:00,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:00,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:00,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435313583] [2023-11-29 01:48:00,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698120381] [2023-11-29 01:48:00,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698120381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:00,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:00,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:48:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943299983] [2023-11-29 01:48:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:00,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:00,569 INFO L87 Difference]: Start difference. First operand 7828 states and 11393 transitions. Second operand has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:48:00,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:00,797 INFO L93 Difference]: Finished difference Result 7828 states and 11393 transitions. [2023-11-29 01:48:00,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:00,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 210 [2023-11-29 01:48:00,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:00,809 INFO L225 Difference]: With dead ends: 7828 [2023-11-29 01:48:00,809 INFO L226 Difference]: Without dead ends: 7827 [2023-11-29 01:48:00,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 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 01:48:00,811 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 371 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:00,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 540 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:48:00,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7827 states. [2023-11-29 01:48:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7827 to 7827. [2023-11-29 01:48:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7827 states, 7503 states have (on average 1.4527522324403572) internal successors, (10900), 7525 states have internal predecessors, (10900), 233 states have call successors, (233), 96 states have call predecessors, (233), 83 states have return successors, (241), 205 states have call predecessors, (241), 233 states have call successors, (241) [2023-11-29 01:48:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7827 states to 7827 states and 11374 transitions. [2023-11-29 01:48:01,087 INFO L78 Accepts]: Start accepts. Automaton has 7827 states and 11374 transitions. Word has length 210 [2023-11-29 01:48:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:01,088 INFO L495 AbstractCegarLoop]: Abstraction has 7827 states and 11374 transitions. [2023-11-29 01:48:01,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:48:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7827 states and 11374 transitions. [2023-11-29 01:48:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-29 01:48:01,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:01,090 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:01,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 01:48:01,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:48:01,291 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:01,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1183466523, now seen corresponding path program 1 times [2023-11-29 01:48:01,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:01,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636634795] [2023-11-29 01:48:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:01,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:01,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5845885] [2023-11-29 01:48:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:01,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:01,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:01,351 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:01,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:48:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:02,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:48:02,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-29 01:48:02,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:02,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:02,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636634795] [2023-11-29 01:48:02,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:02,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5845885] [2023-11-29 01:48:02,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5845885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:02,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:02,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:48:02,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800803132] [2023-11-29 01:48:02,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:02,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:02,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:02,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:02,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:02,277 INFO L87 Difference]: Start difference. First operand 7827 states and 11374 transitions. Second operand has 3 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:48:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:02,627 INFO L93 Difference]: Finished difference Result 12826 states and 18849 transitions. [2023-11-29 01:48:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:02,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 211 [2023-11-29 01:48:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:02,647 INFO L225 Difference]: With dead ends: 12826 [2023-11-29 01:48:02,647 INFO L226 Difference]: Without dead ends: 12825 [2023-11-29 01:48:02,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 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 01:48:02,650 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 367 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:02,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 865 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:48:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12825 states. [2023-11-29 01:48:03,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12825 to 12821. [2023-11-29 01:48:03,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12821 states, 12327 states have (on average 1.4670236067169629) internal successors, (18084), 12362 states have internal predecessors, (18084), 369 states have call successors, (369), 133 states have call predecessors, (369), 117 states have return successors, (377), 325 states have call predecessors, (377), 369 states have call successors, (377) [2023-11-29 01:48:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12821 states to 12821 states and 18830 transitions. [2023-11-29 01:48:03,046 INFO L78 Accepts]: Start accepts. Automaton has 12821 states and 18830 transitions. Word has length 211 [2023-11-29 01:48:03,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:03,047 INFO L495 AbstractCegarLoop]: Abstraction has 12821 states and 18830 transitions. [2023-11-29 01:48:03,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:48:03,047 INFO L276 IsEmpty]: Start isEmpty. Operand 12821 states and 18830 transitions. [2023-11-29 01:48:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-11-29 01:48:03,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:03,049 INFO L195 NwaCegarLoop]: trace histogram [22, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:03,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 01:48:03,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:48:03,250 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:03,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash 813645138, now seen corresponding path program 1 times [2023-11-29 01:48:03,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:03,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341511904] [2023-11-29 01:48:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:03,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:03,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:03,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743867498] [2023-11-29 01:48:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:03,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:03,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:03,314 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:03,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 01:48:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:03,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:48:03,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 165 proven. 33 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-11-29 01:48:04,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-29 01:48:04,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:04,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341511904] [2023-11-29 01:48:04,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:04,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743867498] [2023-11-29 01:48:04,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743867498] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:04,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:04,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 25 [2023-11-29 01:48:04,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43659070] [2023-11-29 01:48:04,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:04,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:48:04,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:04,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:48:04,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:48:04,692 INFO L87 Difference]: Start difference. First operand 12821 states and 18830 transitions. Second operand has 26 states, 25 states have (on average 10.36) internal successors, (259), 26 states have internal predecessors, (259), 11 states have call successors, (25), 10 states have call predecessors, (25), 11 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2023-11-29 01:48:06,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:06,657 INFO L93 Difference]: Finished difference Result 24833 states and 36709 transitions. [2023-11-29 01:48:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 01:48:06,658 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 10.36) internal successors, (259), 26 states have internal predecessors, (259), 11 states have call successors, (25), 10 states have call predecessors, (25), 11 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) Word has length 224 [2023-11-29 01:48:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:06,692 INFO L225 Difference]: With dead ends: 24833 [2023-11-29 01:48:06,692 INFO L226 Difference]: Without dead ends: 24832 [2023-11-29 01:48:06,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 433 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=939, Invalid=1713, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 01:48:06,697 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 13186 mSDsluCounter, 6965 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13212 SdHoareTripleChecker+Valid, 7590 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:06,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13212 Valid, 7590 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:48:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24832 states. [2023-11-29 01:48:07,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24832 to 24788. [2023-11-29 01:48:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24788 states, 23868 states have (on average 1.4752388134741077) internal successors, (35211), 23903 states have internal predecessors, (35211), 705 states have call successors, (705), 223 states have call predecessors, (705), 207 states have return successors, (713), 661 states have call predecessors, (713), 705 states have call successors, (713) [2023-11-29 01:48:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24788 states to 24788 states and 36629 transitions. [2023-11-29 01:48:07,471 INFO L78 Accepts]: Start accepts. Automaton has 24788 states and 36629 transitions. Word has length 224 [2023-11-29 01:48:07,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:07,472 INFO L495 AbstractCegarLoop]: Abstraction has 24788 states and 36629 transitions. [2023-11-29 01:48:07,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 10.36) internal successors, (259), 26 states have internal predecessors, (259), 11 states have call successors, (25), 10 states have call predecessors, (25), 11 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2023-11-29 01:48:07,472 INFO L276 IsEmpty]: Start isEmpty. Operand 24788 states and 36629 transitions. [2023-11-29 01:48:07,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-29 01:48:07,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:07,475 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:07,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-29 01:48:07,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:48:07,676 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:07,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:07,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1871386497, now seen corresponding path program 1 times [2023-11-29 01:48:07,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:07,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697673382] [2023-11-29 01:48:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:07,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:07,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:07,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169835437] [2023-11-29 01:48:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:07,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:07,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:07,729 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:07,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 01:48:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:08,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:48:08,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-11-29 01:48:08,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:08,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697673382] [2023-11-29 01:48:08,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169835437] [2023-11-29 01:48:08,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169835437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:08,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:08,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:08,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434400880] [2023-11-29 01:48:08,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:08,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:08,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:08,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:08,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:08,382 INFO L87 Difference]: Start difference. First operand 24788 states and 36629 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:48:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:09,098 INFO L93 Difference]: Finished difference Result 48963 states and 72809 transitions. [2023-11-29 01:48:09,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:09,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 219 [2023-11-29 01:48:09,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:09,135 INFO L225 Difference]: With dead ends: 48963 [2023-11-29 01:48:09,135 INFO L226 Difference]: Without dead ends: 27266 [2023-11-29 01:48:09,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 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 01:48:09,150 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 9 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:09,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1032 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:48:09,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27266 states. [2023-11-29 01:48:09,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27266 to 27148. [2023-11-29 01:48:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27148 states, 26228 states have (on average 1.4324767424126887) internal successors, (37571), 26263 states have internal predecessors, (37571), 705 states have call successors, (705), 223 states have call predecessors, (705), 207 states have return successors, (713), 661 states have call predecessors, (713), 705 states have call successors, (713) [2023-11-29 01:48:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27148 states to 27148 states and 38989 transitions. [2023-11-29 01:48:10,014 INFO L78 Accepts]: Start accepts. Automaton has 27148 states and 38989 transitions. Word has length 219 [2023-11-29 01:48:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:10,014 INFO L495 AbstractCegarLoop]: Abstraction has 27148 states and 38989 transitions. [2023-11-29 01:48:10,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:48:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 27148 states and 38989 transitions. [2023-11-29 01:48:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-29 01:48:10,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:10,017 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:10,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-29 01:48:10,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:48:10,218 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:10,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:10,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1310686719, now seen corresponding path program 1 times [2023-11-29 01:48:10,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:10,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637428473] [2023-11-29 01:48:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:10,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:10,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:10,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811833966] [2023-11-29 01:48:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:10,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:10,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:10,293 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:10,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 01:48:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:10,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:48:10,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-11-29 01:48:10,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:10,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637428473] [2023-11-29 01:48:10,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811833966] [2023-11-29 01:48:10,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811833966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:10,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:10,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:48:10,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846508074] [2023-11-29 01:48:10,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:10,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:48:10,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:10,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:48:10,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:48:10,994 INFO L87 Difference]: Start difference. First operand 27148 states and 38989 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:48:11,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:11,741 INFO L93 Difference]: Finished difference Result 49563 states and 72175 transitions. [2023-11-29 01:48:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:48:11,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 219 [2023-11-29 01:48:11,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:11,777 INFO L225 Difference]: With dead ends: 49563 [2023-11-29 01:48:11,777 INFO L226 Difference]: Without dead ends: 25614 [2023-11-29 01:48:11,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 216 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 01:48:11,788 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 165 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:11,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1396 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:48:11,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25614 states. [2023-11-29 01:48:12,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25614 to 25496. [2023-11-29 01:48:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25496 states, 24576 states have (on average 1.4279378255208333) internal successors, (35093), 24611 states have internal predecessors, (35093), 705 states have call successors, (705), 223 states have call predecessors, (705), 207 states have return successors, (713), 661 states have call predecessors, (713), 705 states have call successors, (713) [2023-11-29 01:48:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25496 states to 25496 states and 36511 transitions. [2023-11-29 01:48:12,546 INFO L78 Accepts]: Start accepts. Automaton has 25496 states and 36511 transitions. Word has length 219 [2023-11-29 01:48:12,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:12,546 INFO L495 AbstractCegarLoop]: Abstraction has 25496 states and 36511 transitions. [2023-11-29 01:48:12,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:48:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 25496 states and 36511 transitions. [2023-11-29 01:48:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-11-29 01:48:12,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:12,549 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:12,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 01:48:12,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:12,750 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:12,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:12,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1134033651, now seen corresponding path program 1 times [2023-11-29 01:48:12,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:12,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695583364] [2023-11-29 01:48:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:12,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:12,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:12,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821737614] [2023-11-29 01:48:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:12,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:12,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:12,818 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:12,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 01:48:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:13,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:48:13,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-29 01:48:13,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-29 01:48:13,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:13,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695583364] [2023-11-29 01:48:13,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:13,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821737614] [2023-11-29 01:48:13,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821737614] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:13,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:13,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3] total 5 [2023-11-29 01:48:13,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345997240] [2023-11-29 01:48:13,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:14,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:48:14,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:14,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:48:14,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:48:14,001 INFO L87 Difference]: Start difference. First operand 25496 states and 36511 transitions. Second operand has 6 states, 5 states have (on average 71.6) internal successors, (358), 6 states have internal predecessors, (358), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:48:15,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:15,436 INFO L93 Difference]: Finished difference Result 58399 states and 84190 transitions. [2023-11-29 01:48:15,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:48:15,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 71.6) internal successors, (358), 6 states have internal predecessors, (358), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 219 [2023-11-29 01:48:15,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:15,523 INFO L225 Difference]: With dead ends: 58399 [2023-11-29 01:48:15,523 INFO L226 Difference]: Without dead ends: 58398 [2023-11-29 01:48:15,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:48:15,536 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 2643 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:15,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2643 Valid, 1763 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:48:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58398 states. [2023-11-29 01:48:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58398 to 58382. [2023-11-29 01:48:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58382 states, 56403 states have (on average 1.435278265340496) internal successors, (80954), 56477 states have internal predecessors, (80954), 1563 states have call successors, (1563), 433 states have call predecessors, (1563), 408 states have return successors, (1571), 1471 states have call predecessors, (1571), 1563 states have call successors, (1571) [2023-11-29 01:48:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58382 states to 58382 states and 84088 transitions. [2023-11-29 01:48:17,333 INFO L78 Accepts]: Start accepts. Automaton has 58382 states and 84088 transitions. Word has length 219 [2023-11-29 01:48:17,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:17,333 INFO L495 AbstractCegarLoop]: Abstraction has 58382 states and 84088 transitions. [2023-11-29 01:48:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 71.6) internal successors, (358), 6 states have internal predecessors, (358), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:48:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 58382 states and 84088 transitions. [2023-11-29 01:48:17,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-29 01:48:17,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:17,336 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:17,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 01:48:17,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:17,536 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:17,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:17,537 INFO L85 PathProgramCache]: Analyzing trace with hash -182432773, now seen corresponding path program 1 times [2023-11-29 01:48:17,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:17,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031350124] [2023-11-29 01:48:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:17,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:17,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:17,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144114376] [2023-11-29 01:48:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:17,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:17,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:17,599 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:17,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 01:48:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:18,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:48:18,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2023-11-29 01:48:18,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:48:18,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:18,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031350124] [2023-11-29 01:48:18,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:18,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144114376] [2023-11-29 01:48:18,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144114376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:48:18,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:48:18,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:48:18,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682667058] [2023-11-29 01:48:18,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:48:18,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:48:18,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:18,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:48:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:48:18,479 INFO L87 Difference]: Start difference. First operand 58382 states and 84088 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:48:19,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:19,314 INFO L93 Difference]: Finished difference Result 70678 states and 101000 transitions. [2023-11-29 01:48:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:48:19,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 227 [2023-11-29 01:48:19,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:19,341 INFO L225 Difference]: With dead ends: 70678 [2023-11-29 01:48:19,341 INFO L226 Difference]: Without dead ends: 13045 [2023-11-29 01:48:19,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 225 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 01:48:19,377 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 14 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:19,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1047 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:48:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13045 states. [2023-11-29 01:48:19,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13045 to 8266. [2023-11-29 01:48:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 7916 states have (on average 1.371020717534108) internal successors, (10853), 7941 states have internal predecessors, (10853), 219 states have call successors, (219), 133 states have call predecessors, (219), 123 states have return successors, (227), 191 states have call predecessors, (227), 219 states have call successors, (227) [2023-11-29 01:48:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11299 transitions. [2023-11-29 01:48:19,970 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11299 transitions. Word has length 227 [2023-11-29 01:48:19,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:19,970 INFO L495 AbstractCegarLoop]: Abstraction has 8266 states and 11299 transitions. [2023-11-29 01:48:19,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:48:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11299 transitions. [2023-11-29 01:48:19,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-29 01:48:19,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:19,973 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:19,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 01:48:20,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:20,174 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:20,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:20,174 INFO L85 PathProgramCache]: Analyzing trace with hash 529349523, now seen corresponding path program 1 times [2023-11-29 01:48:20,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:20,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377967916] [2023-11-29 01:48:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:20,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:20,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:20,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480620997] [2023-11-29 01:48:20,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:20,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:20,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:20,250 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:20,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 01:48:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:21,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:48:21,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 248 proven. 8 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-29 01:48:21,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 73 proven. 10 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-29 01:48:21,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:21,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377967916] [2023-11-29 01:48:21,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:21,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480620997] [2023-11-29 01:48:21,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480620997] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:21,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:21,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 21 [2023-11-29 01:48:21,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813363427] [2023-11-29 01:48:21,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:21,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:48:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:48:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:48:21,709 INFO L87 Difference]: Start difference. First operand 8266 states and 11299 transitions. Second operand has 22 states, 21 states have (on average 15.619047619047619) internal successors, (328), 20 states have internal predecessors, (328), 7 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-29 01:48:22,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:22,665 INFO L93 Difference]: Finished difference Result 13790 states and 18938 transitions. [2023-11-29 01:48:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:48:22,665 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.619047619047619) internal successors, (328), 20 states have internal predecessors, (328), 7 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 240 [2023-11-29 01:48:22,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:22,675 INFO L225 Difference]: With dead ends: 13790 [2023-11-29 01:48:22,675 INFO L226 Difference]: Without dead ends: 7781 [2023-11-29 01:48:22,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=438, Invalid=968, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 01:48:22,681 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 3101 mSDsluCounter, 4930 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3115 SdHoareTripleChecker+Valid, 5995 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:22,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3115 Valid, 5995 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:48:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7781 states. [2023-11-29 01:48:22,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7781 to 7678. [2023-11-29 01:48:22,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7678 states, 7376 states have (on average 1.3755422993492408) internal successors, (10146), 7396 states have internal predecessors, (10146), 189 states have call successors, (189), 115 states have call predecessors, (189), 106 states have return successors, (191), 166 states have call predecessors, (191), 189 states have call successors, (191) [2023-11-29 01:48:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7678 states to 7678 states and 10526 transitions. [2023-11-29 01:48:22,997 INFO L78 Accepts]: Start accepts. Automaton has 7678 states and 10526 transitions. Word has length 240 [2023-11-29 01:48:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:22,998 INFO L495 AbstractCegarLoop]: Abstraction has 7678 states and 10526 transitions. [2023-11-29 01:48:22,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.619047619047619) internal successors, (328), 20 states have internal predecessors, (328), 7 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-29 01:48:22,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7678 states and 10526 transitions. [2023-11-29 01:48:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-11-29 01:48:23,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:23,001 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:23,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 01:48:23,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:23,202 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:23,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -496032608, now seen corresponding path program 1 times [2023-11-29 01:48:23,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:23,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995860768] [2023-11-29 01:48:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:23,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:23,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:23,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118388357] [2023-11-29 01:48:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:23,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:23,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:23,302 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:23,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 01:48:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:24,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:48:24,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:24,071 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 15 treesize of output 1 [2023-11-29 01:48:24,343 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 01:48:24,353 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 01:48:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-29 01:48:24,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-29 01:48:24,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:24,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995860768] [2023-11-29 01:48:24,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:24,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118388357] [2023-11-29 01:48:24,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118388357] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:24,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:24,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 01:48:24,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635062425] [2023-11-29 01:48:24,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:24,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:48:24,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:48:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:48:24,539 INFO L87 Difference]: Start difference. First operand 7678 states and 10526 transitions. Second operand has 11 states, 11 states have (on average 27.818181818181817) internal successors, (306), 11 states have internal predecessors, (306), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 01:48:25,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:25,234 INFO L93 Difference]: Finished difference Result 16886 states and 23125 transitions. [2023-11-29 01:48:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:48:25,235 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 27.818181818181817) internal successors, (306), 11 states have internal predecessors, (306), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 244 [2023-11-29 01:48:25,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:25,247 INFO L225 Difference]: With dead ends: 16886 [2023-11-29 01:48:25,247 INFO L226 Difference]: Without dead ends: 10350 [2023-11-29 01:48:25,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 470 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:48:25,253 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1357 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 3326 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:25,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 3326 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:48:25,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10350 states. [2023-11-29 01:48:25,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10350 to 8138. [2023-11-29 01:48:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8138 states, 7816 states have (on average 1.370138178096213) internal successors, (10709), 7836 states have internal predecessors, (10709), 207 states have call successors, (207), 117 states have call predecessors, (207), 108 states have return successors, (211), 184 states have call predecessors, (211), 207 states have call successors, (211) [2023-11-29 01:48:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8138 states to 8138 states and 11127 transitions. [2023-11-29 01:48:25,565 INFO L78 Accepts]: Start accepts. Automaton has 8138 states and 11127 transitions. Word has length 244 [2023-11-29 01:48:25,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:25,565 INFO L495 AbstractCegarLoop]: Abstraction has 8138 states and 11127 transitions. [2023-11-29 01:48:25,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.818181818181817) internal successors, (306), 11 states have internal predecessors, (306), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 01:48:25,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8138 states and 11127 transitions. [2023-11-29 01:48:25,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-11-29 01:48:25,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:25,567 INFO L195 NwaCegarLoop]: trace histogram [44, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:25,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 01:48:25,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:25,768 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:25,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash 295961729, now seen corresponding path program 1 times [2023-11-29 01:48:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:25,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798867921] [2023-11-29 01:48:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:25,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:25,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:25,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093468507] [2023-11-29 01:48:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:25,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:25,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:25,865 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:25,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 01:48:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:26,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 2046 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:48:26,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 74 proven. 922 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-11-29 01:48:27,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2023-11-29 01:48:27,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:27,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798867921] [2023-11-29 01:48:27,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:27,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093468507] [2023-11-29 01:48:27,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093468507] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:27,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:27,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15] total 23 [2023-11-29 01:48:27,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10310936] [2023-11-29 01:48:27,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:27,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:48:27,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:27,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:48:27,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:48:27,565 INFO L87 Difference]: Start difference. First operand 8138 states and 11127 transitions. Second operand has 24 states, 23 states have (on average 14.565217391304348) internal successors, (335), 20 states have internal predecessors, (335), 9 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-29 01:48:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:29,605 INFO L93 Difference]: Finished difference Result 17812 states and 24582 transitions. [2023-11-29 01:48:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 01:48:29,606 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 14.565217391304348) internal successors, (335), 20 states have internal predecessors, (335), 9 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) Word has length 271 [2023-11-29 01:48:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:29,625 INFO L225 Difference]: With dead ends: 17812 [2023-11-29 01:48:29,626 INFO L226 Difference]: Without dead ends: 17806 [2023-11-29 01:48:29,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=589, Invalid=1303, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 01:48:29,629 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 7492 mSDsluCounter, 8460 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7521 SdHoareTripleChecker+Valid, 9007 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:29,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7521 Valid, 9007 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:48:29,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17806 states. [2023-11-29 01:48:30,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17806 to 12818. [2023-11-29 01:48:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12818 states, 12358 states have (on average 1.3726331121540702) internal successors, (16963), 12393 states have internal predecessors, (16963), 298 states have call successors, (298), 165 states have call predecessors, (298), 155 states have return successors, (303), 259 states have call predecessors, (303), 298 states have call successors, (303) [2023-11-29 01:48:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12818 states to 12818 states and 17564 transitions. [2023-11-29 01:48:30,145 INFO L78 Accepts]: Start accepts. Automaton has 12818 states and 17564 transitions. Word has length 271 [2023-11-29 01:48:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:30,146 INFO L495 AbstractCegarLoop]: Abstraction has 12818 states and 17564 transitions. [2023-11-29 01:48:30,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 14.565217391304348) internal successors, (335), 20 states have internal predecessors, (335), 9 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (18), 8 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-29 01:48:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 12818 states and 17564 transitions. [2023-11-29 01:48:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-11-29 01:48:30,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:30,148 INFO L195 NwaCegarLoop]: trace histogram [32, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:30,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 01:48:30,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:30,348 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:30,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:30,349 INFO L85 PathProgramCache]: Analyzing trace with hash 894568267, now seen corresponding path program 1 times [2023-11-29 01:48:30,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:30,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444706725] [2023-11-29 01:48:30,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:30,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:30,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:30,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516439486] [2023-11-29 01:48:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:30,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:30,444 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:30,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 01:48:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:31,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 2041 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:48:31,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2023-11-29 01:48:31,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 0 proven. 545 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-11-29 01:48:32,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:32,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444706725] [2023-11-29 01:48:32,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:32,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516439486] [2023-11-29 01:48:32,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516439486] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:32,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:32,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 21 [2023-11-29 01:48:32,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724555527] [2023-11-29 01:48:32,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:32,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:48:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:48:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=292, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:48:32,424 INFO L87 Difference]: Start difference. First operand 12818 states and 17564 transitions. Second operand has 22 states, 21 states have (on average 19.761904761904763) internal successors, (415), 22 states have internal predecessors, (415), 11 states have call successors, (24), 12 states have call predecessors, (24), 11 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) [2023-11-29 01:48:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:35,797 INFO L93 Difference]: Finished difference Result 47989 states and 65784 transitions. [2023-11-29 01:48:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 01:48:35,798 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 19.761904761904763) internal successors, (415), 22 states have internal predecessors, (415), 11 states have call successors, (24), 12 states have call predecessors, (24), 11 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) Word has length 276 [2023-11-29 01:48:35,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:35,859 INFO L225 Difference]: With dead ends: 47989 [2023-11-29 01:48:35,860 INFO L226 Difference]: Without dead ends: 47986 [2023-11-29 01:48:35,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 539 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 01:48:35,869 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 11717 mSDsluCounter, 5862 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 872 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11793 SdHoareTripleChecker+Valid, 6359 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 872 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:35,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11793 Valid, 6359 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [872 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:48:35,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47986 states. [2023-11-29 01:48:36,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47986 to 16798. [2023-11-29 01:48:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16798 states, 16114 states have (on average 1.3465309668611145) internal successors, (21698), 16147 states have internal predecessors, (21698), 434 states have call successors, (434), 269 states have call predecessors, (434), 243 states have return successors, (449), 381 states have call predecessors, (449), 434 states have call successors, (449) [2023-11-29 01:48:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16798 states to 16798 states and 22581 transitions. [2023-11-29 01:48:36,950 INFO L78 Accepts]: Start accepts. Automaton has 16798 states and 22581 transitions. Word has length 276 [2023-11-29 01:48:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:36,950 INFO L495 AbstractCegarLoop]: Abstraction has 16798 states and 22581 transitions. [2023-11-29 01:48:36,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 19.761904761904763) internal successors, (415), 22 states have internal predecessors, (415), 11 states have call successors, (24), 12 states have call predecessors, (24), 11 states have return successors, (22), 11 states have call predecessors, (22), 11 states have call successors, (22) [2023-11-29 01:48:36,951 INFO L276 IsEmpty]: Start isEmpty. Operand 16798 states and 22581 transitions. [2023-11-29 01:48:36,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-11-29 01:48:36,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:36,956 INFO L195 NwaCegarLoop]: trace histogram [22, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:36,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 01:48:37,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 01:48:37,156 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:37,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:37,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1329334176, now seen corresponding path program 1 times [2023-11-29 01:48:37,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:37,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925164568] [2023-11-29 01:48:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:37,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:37,245 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:37,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806456712] [2023-11-29 01:48:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:37,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:37,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:37,246 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:37,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 01:48:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:38,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:48:38,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:38,230 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 15 treesize of output 1 [2023-11-29 01:48:38,471 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 01:48:38,592 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 01:48:38,716 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 01:48:38,728 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 01:48:38,741 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-29 01:48:38,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-29 01:48:39,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:39,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925164568] [2023-11-29 01:48:39,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:39,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806456712] [2023-11-29 01:48:39,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806456712] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:39,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:39,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-29 01:48:39,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328119376] [2023-11-29 01:48:39,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:39,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:48:39,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:39,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:48:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:48:39,213 INFO L87 Difference]: Start difference. First operand 16798 states and 22581 transitions. Second operand has 19 states, 19 states have (on average 32.94736842105263) internal successors, (626), 19 states have internal predecessors, (626), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 01:48:41,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:41,284 INFO L93 Difference]: Finished difference Result 46942 states and 63555 transitions. [2023-11-29 01:48:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:48:41,285 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 32.94736842105263) internal successors, (626), 19 states have internal predecessors, (626), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 404 [2023-11-29 01:48:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:41,334 INFO L225 Difference]: With dead ends: 46942 [2023-11-29 01:48:41,334 INFO L226 Difference]: Without dead ends: 38400 [2023-11-29 01:48:41,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 782 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:48:41,343 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 3375 mSDsluCounter, 4532 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3427 SdHoareTripleChecker+Valid, 5035 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:41,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3427 Valid, 5035 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:48:41,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38400 states. [2023-11-29 01:48:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38400 to 30728. [2023-11-29 01:48:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30728 states, 29500 states have (on average 1.33) internal successors, (39235), 29579 states have internal predecessors, (39235), 978 states have call successors, (978), 269 states have call predecessors, (978), 243 states have return successors, (1030), 879 states have call predecessors, (1030), 978 states have call successors, (1030) [2023-11-29 01:48:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30728 states to 30728 states and 41243 transitions. [2023-11-29 01:48:42,699 INFO L78 Accepts]: Start accepts. Automaton has 30728 states and 41243 transitions. Word has length 404 [2023-11-29 01:48:42,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:42,700 INFO L495 AbstractCegarLoop]: Abstraction has 30728 states and 41243 transitions. [2023-11-29 01:48:42,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 32.94736842105263) internal successors, (626), 19 states have internal predecessors, (626), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 01:48:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 30728 states and 41243 transitions. [2023-11-29 01:48:42,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2023-11-29 01:48:42,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:42,714 INFO L195 NwaCegarLoop]: trace histogram [88, 9, 9, 9, 9, 9, 9, 9, 9, 8, 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, 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] [2023-11-29 01:48:42,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-29 01:48:42,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 01:48:42,915 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting alt_freeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:42,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:42,915 INFO L85 PathProgramCache]: Analyzing trace with hash 959862986, now seen corresponding path program 1 times [2023-11-29 01:48:42,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:42,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26187164] [2023-11-29 01:48:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:42,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:43,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:43,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824819017] [2023-11-29 01:48:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:43,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:43,094 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:43,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 01:48:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:44,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 4206 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 01:48:44,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5526 backedges. 209 proven. 4617 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2023-11-29 01:48:45,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5526 backedges. 209 proven. 517 refuted. 0 times theorem prover too weak. 4800 trivial. 0 not checked. [2023-11-29 01:48:46,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:46,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26187164] [2023-11-29 01:48:46,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:46,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824819017] [2023-11-29 01:48:46,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824819017] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:46,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:46,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 34] total 46 [2023-11-29 01:48:46,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794891638] [2023-11-29 01:48:46,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:46,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 01:48:46,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:46,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 01:48:46,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=1646, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 01:48:46,457 INFO L87 Difference]: Start difference. First operand 30728 states and 41243 transitions. Second operand has 47 states, 46 states have (on average 16.26086956521739) internal successors, (748), 38 states have internal predecessors, (748), 19 states have call successors, (39), 20 states have call predecessors, (39), 20 states have return successors, (38), 18 states have call predecessors, (38), 19 states have call successors, (38) [2023-11-29 01:48:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:48:51,472 INFO L93 Difference]: Finished difference Result 48628 states and 65985 transitions. [2023-11-29 01:48:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 01:48:51,473 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 16.26086956521739) internal successors, (748), 38 states have internal predecessors, (748), 19 states have call successors, (39), 20 states have call predecessors, (39), 20 states have return successors, (38), 18 states have call predecessors, (38), 19 states have call successors, (38) Word has length 562 [2023-11-29 01:48:51,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:48:51,537 INFO L225 Difference]: With dead ends: 48628 [2023-11-29 01:48:51,538 INFO L226 Difference]: Without dead ends: 48609 [2023-11-29 01:48:51,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1186 GetRequests, 1104 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2202, Invalid=4604, Unknown=0, NotChecked=0, Total=6806 [2023-11-29 01:48:51,549 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 22319 mSDsluCounter, 15496 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 1424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22368 SdHoareTripleChecker+Valid, 16043 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1424 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:48:51,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22368 Valid, 16043 Invalid, 2889 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1424 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:48:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48609 states. [2023-11-29 01:48:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48609 to 39462. [2023-11-29 01:48:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39462 states, 38008 states have (on average 1.3383235108398233) internal successors, (50867), 38105 states have internal predecessors, (50867), 1118 states have call successors, (1118), 353 states have call predecessors, (1118), 330 states have return successors, (1120), 1003 states have call predecessors, (1120), 1118 states have call successors, (1120) [2023-11-29 01:48:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39462 states to 39462 states and 53105 transitions. [2023-11-29 01:48:53,437 INFO L78 Accepts]: Start accepts. Automaton has 39462 states and 53105 transitions. Word has length 562 [2023-11-29 01:48:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:48:53,437 INFO L495 AbstractCegarLoop]: Abstraction has 39462 states and 53105 transitions. [2023-11-29 01:48:53,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 16.26086956521739) internal successors, (748), 38 states have internal predecessors, (748), 19 states have call successors, (39), 20 states have call predecessors, (39), 20 states have return successors, (38), 18 states have call predecessors, (38), 19 states have call successors, (38) [2023-11-29 01:48:53,438 INFO L276 IsEmpty]: Start isEmpty. Operand 39462 states and 53105 transitions. [2023-11-29 01:48:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-11-29 01:48:53,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:48:53,452 INFO L195 NwaCegarLoop]: trace histogram [88, 10, 10, 9, 9, 9, 9, 9, 9, 8, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:48:53,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 01:48:53,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:53,653 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:48:53,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:48:53,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2136367247, now seen corresponding path program 1 times [2023-11-29 01:48:53,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:48:53,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464488136] [2023-11-29 01:48:53,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:53,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:48:53,843 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:48:53,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040907591] [2023-11-29 01:48:53,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:48:53,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:48:53,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:48:53,844 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:48:53,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 01:48:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:48:55,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 4338 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 01:48:55,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:48:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5555 backedges. 212 proven. 4628 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2023-11-29 01:48:56,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:48:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5555 backedges. 212 proven. 537 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2023-11-29 01:48:57,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:48:57,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464488136] [2023-11-29 01:48:57,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:48:57,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040907591] [2023-11-29 01:48:57,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040907591] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:48:57,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:48:57,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 32] total 45 [2023-11-29 01:48:57,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019651420] [2023-11-29 01:48:57,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:48:57,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 01:48:57,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:48:57,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 01:48:57,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 01:48:57,461 INFO L87 Difference]: Start difference. First operand 39462 states and 53105 transitions. Second operand has 46 states, 45 states have (on average 16.955555555555556) internal successors, (763), 40 states have internal predecessors, (763), 17 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (40), 16 states have call predecessors, (40), 17 states have call successors, (40) [2023-11-29 01:49:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:04,584 INFO L93 Difference]: Finished difference Result 57542 states and 78108 transitions. [2023-11-29 01:49:04,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-29 01:49:04,585 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 16.955555555555556) internal successors, (763), 40 states have internal predecessors, (763), 17 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (40), 16 states have call predecessors, (40), 17 states have call successors, (40) Word has length 576 [2023-11-29 01:49:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:04,664 INFO L225 Difference]: With dead ends: 57542 [2023-11-29 01:49:04,664 INFO L226 Difference]: Without dead ends: 57541 [2023-11-29 01:49:04,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1217 GetRequests, 1123 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2148 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2663, Invalid=6457, Unknown=0, NotChecked=0, Total=9120 [2023-11-29 01:49:04,675 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 22360 mSDsluCounter, 16306 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 1714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22415 SdHoareTripleChecker+Valid, 16853 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1714 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:04,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22415 Valid, 16853 Invalid, 3268 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1714 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 01:49:04,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57541 states. [2023-11-29 01:49:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57541 to 43065. [2023-11-29 01:49:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43065 states, 41494 states have (on average 1.3402178628235408) internal successors, (55611), 41596 states have internal predecessors, (55611), 1200 states have call successors, (1200), 390 states have call predecessors, (1200), 365 states have return successors, (1202), 1078 states have call predecessors, (1202), 1200 states have call successors, (1202) [2023-11-29 01:49:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43065 states to 43065 states and 58013 transitions. [2023-11-29 01:49:06,710 INFO L78 Accepts]: Start accepts. Automaton has 43065 states and 58013 transitions. Word has length 576 [2023-11-29 01:49:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:06,710 INFO L495 AbstractCegarLoop]: Abstraction has 43065 states and 58013 transitions. [2023-11-29 01:49:06,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 16.955555555555556) internal successors, (763), 40 states have internal predecessors, (763), 17 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (40), 16 states have call predecessors, (40), 17 states have call successors, (40) [2023-11-29 01:49:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 43065 states and 58013 transitions. [2023-11-29 01:49:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-11-29 01:49:06,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:06,728 INFO L195 NwaCegarLoop]: trace histogram [76, 11, 11, 11, 11, 11, 11, 10, 10, 10, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:49:06,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-11-29 01:49:06,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 01:49:06,928 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:49:06,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash 367090059, now seen corresponding path program 2 times [2023-11-29 01:49:06,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:06,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499473541] [2023-11-29 01:49:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:06,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:07,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:07,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382457558] [2023-11-29 01:49:07,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:49:07,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:07,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:07,124 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:07,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 01:49:08,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:49:08,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:49:08,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:49:08,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4744 backedges. 1170 proven. 0 refuted. 0 times theorem prover too weak. 3574 trivial. 0 not checked. [2023-11-29 01:49:08,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:49:08,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:08,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499473541] [2023-11-29 01:49:08,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:49:08,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382457558] [2023-11-29 01:49:08,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382457558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:49:08,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:49:08,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:49:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090983907] [2023-11-29 01:49:08,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:49:08,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:49:08,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:49:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:49:08,452 INFO L87 Difference]: Start difference. First operand 43065 states and 58013 transitions. Second operand has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 01:49:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:10,573 INFO L93 Difference]: Finished difference Result 86652 states and 116996 transitions. [2023-11-29 01:49:10,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:49:10,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 618 [2023-11-29 01:49:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:10,635 INFO L225 Difference]: With dead ends: 86652 [2023-11-29 01:49:10,635 INFO L226 Difference]: Without dead ends: 43905 [2023-11-29 01:49:10,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 613 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:49:10,667 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 12 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:10,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2368 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:49:10,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43905 states. [2023-11-29 01:49:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43905 to 43737. [2023-11-29 01:49:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43737 states, 42166 states have (on average 1.3347958070483328) internal successors, (56283), 42268 states have internal predecessors, (56283), 1200 states have call successors, (1200), 390 states have call predecessors, (1200), 365 states have return successors, (1202), 1078 states have call predecessors, (1202), 1200 states have call successors, (1202) [2023-11-29 01:49:12,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43737 states to 43737 states and 58685 transitions. [2023-11-29 01:49:12,731 INFO L78 Accepts]: Start accepts. Automaton has 43737 states and 58685 transitions. Word has length 618 [2023-11-29 01:49:12,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:12,731 INFO L495 AbstractCegarLoop]: Abstraction has 43737 states and 58685 transitions. [2023-11-29 01:49:12,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 01:49:12,731 INFO L276 IsEmpty]: Start isEmpty. Operand 43737 states and 58685 transitions. [2023-11-29 01:49:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2023-11-29 01:49:12,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:12,749 INFO L195 NwaCegarLoop]: trace histogram [76, 11, 11, 11, 11, 11, 11, 10, 10, 10, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:49:12,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 01:49:12,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 01:49:12,950 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:49:12,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:12,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2137811044, now seen corresponding path program 1 times [2023-11-29 01:49:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838832862] [2023-11-29 01:49:12,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:12,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:13,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:13,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953810460] [2023-11-29 01:49:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:13,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:13,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:13,138 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:13,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 01:49:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:14,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 4668 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 01:49:14,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4747 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 3835 trivial. 0 not checked. [2023-11-29 01:49:15,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:49:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4747 backedges. 0 proven. 3945 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2023-11-29 01:49:17,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:17,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838832862] [2023-11-29 01:49:17,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:49:17,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953810460] [2023-11-29 01:49:17,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953810460] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:49:17,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:49:17,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 32] total 45 [2023-11-29 01:49:17,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765514891] [2023-11-29 01:49:17,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:49:17,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 01:49:17,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:17,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 01:49:17,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=1360, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 01:49:17,047 INFO L87 Difference]: Start difference. First operand 43737 states and 58685 transitions. Second operand has 46 states, 45 states have (on average 20.022222222222222) internal successors, (901), 46 states have internal predecessors, (901), 23 states have call successors, (52), 24 states have call predecessors, (52), 23 states have return successors, (50), 23 states have call predecessors, (50), 23 states have call successors, (50) [2023-11-29 01:49:36,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:36,589 INFO L93 Difference]: Finished difference Result 288374 states and 394934 transitions. [2023-11-29 01:49:36,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-29 01:49:36,590 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 20.022222222222222) internal successors, (901), 46 states have internal predecessors, (901), 23 states have call successors, (52), 24 states have call predecessors, (52), 23 states have return successors, (50), 23 states have call predecessors, (50), 23 states have call successors, (50) Word has length 621 [2023-11-29 01:49:36,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:37,210 INFO L225 Difference]: With dead ends: 288374 [2023-11-29 01:49:37,211 INFO L226 Difference]: Without dead ends: 288371 [2023-11-29 01:49:37,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 1217 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1775 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2843, Invalid=4989, Unknown=0, NotChecked=0, Total=7832 [2023-11-29 01:49:37,241 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 38916 mSDsluCounter, 15752 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 3011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39108 SdHoareTripleChecker+Valid, 16248 SdHoareTripleChecker+Invalid, 4384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3011 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:37,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39108 Valid, 16248 Invalid, 4384 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3011 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 01:49:37,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288371 states. [2023-11-29 01:49:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288371 to 87530. [2023-11-29 01:49:43,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87530 states, 84224 states have (on average 1.3097810600303952) internal successors, (110315), 84333 states have internal predecessors, (110315), 2341 states have call successors, (2341), 1015 states have call predecessors, (2341), 959 states have return successors, (2347), 2181 states have call predecessors, (2347), 2341 states have call successors, (2347) [2023-11-29 01:49:43,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87530 states to 87530 states and 115003 transitions. [2023-11-29 01:49:43,590 INFO L78 Accepts]: Start accepts. Automaton has 87530 states and 115003 transitions. Word has length 621 [2023-11-29 01:49:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:43,590 INFO L495 AbstractCegarLoop]: Abstraction has 87530 states and 115003 transitions. [2023-11-29 01:49:43,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 20.022222222222222) internal successors, (901), 46 states have internal predecessors, (901), 23 states have call successors, (52), 24 states have call predecessors, (52), 23 states have return successors, (50), 23 states have call predecessors, (50), 23 states have call successors, (50) [2023-11-29 01:49:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 87530 states and 115003 transitions. [2023-11-29 01:49:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2023-11-29 01:49:43,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:43,619 INFO L195 NwaCegarLoop]: trace histogram [22, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:43,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-29 01:49:43,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:43,819 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:49:43,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:43,820 INFO L85 PathProgramCache]: Analyzing trace with hash 324108416, now seen corresponding path program 1 times [2023-11-29 01:49:43,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:43,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094925222] [2023-11-29 01:49:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:43,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:44,011 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:49:44,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392207772] [2023-11-29 01:49:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:44,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:44,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:44,012 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:44,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 01:49:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:45,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 3662 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 01:49:45,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:45,811 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 15 treesize of output 1 [2023-11-29 01:49:46,049 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 01:49:46,164 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 01:49:46,277 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 01:49:46,400 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 01:49:46,530 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 01:49:46,653 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 01:49:46,774 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 01:49:46,787 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 01:49:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 1697 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-29 01:49:46,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:49:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 1697 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-11-29 01:49:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:47,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094925222] [2023-11-29 01:49:47,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:49:47,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392207772] [2023-11-29 01:49:47,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392207772] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:49:47,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:49:47,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2023-11-29 01:49:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168543653] [2023-11-29 01:49:47,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:49:47,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:49:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:47,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:49:47,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=579, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:49:47,750 INFO L87 Difference]: Start difference. First operand 87530 states and 115003 transitions. Second operand has 29 states, 29 states have (on average 30.82758620689655) internal successors, (894), 29 states have internal predecessors, (894), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 01:49:56,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:56,014 INFO L93 Difference]: Finished difference Result 193926 states and 258005 transitions. [2023-11-29 01:49:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 01:49:56,015 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 30.82758620689655) internal successors, (894), 29 states have internal predecessors, (894), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 730 [2023-11-29 01:49:56,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:56,294 INFO L225 Difference]: With dead ends: 193926 [2023-11-29 01:49:56,294 INFO L226 Difference]: Without dead ends: 176891 [2023-11-29 01:49:56,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1418 SyntacticMatches, 13 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 01:49:56,324 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 2239 mSDsluCounter, 5546 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 6046 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:56,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2308 Valid, 6046 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:49:56,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176891 states. [2023-11-29 01:50:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176891 to 146127. [2023-11-29 01:50:04,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146127 states, 140908 states have (on average 1.3076333494194794) internal successors, (184256), 141087 states have internal predecessors, (184256), 4254 states have call successors, (4254), 1015 states have call predecessors, (4254), 959 states have return successors, (4270), 4024 states have call predecessors, (4270), 4254 states have call successors, (4270) [2023-11-29 01:50:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146127 states to 146127 states and 192780 transitions. [2023-11-29 01:50:04,230 INFO L78 Accepts]: Start accepts. Automaton has 146127 states and 192780 transitions. Word has length 730 [2023-11-29 01:50:04,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:04,231 INFO L495 AbstractCegarLoop]: Abstraction has 146127 states and 192780 transitions. [2023-11-29 01:50:04,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 30.82758620689655) internal successors, (894), 29 states have internal predecessors, (894), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 01:50:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 146127 states and 192780 transitions. [2023-11-29 01:50:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2023-11-29 01:50:04,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:04,310 INFO L195 NwaCegarLoop]: trace histogram [22, 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, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:04,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-29 01:50:04,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:50:04,510 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:50:04,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash 555412933, now seen corresponding path program 2 times [2023-11-29 01:50:04,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:04,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954983737] [2023-11-29 01:50:04,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:04,749 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:50:04,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869580293] [2023-11-29 01:50:04,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:50:04,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:50:04,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:50:04,750 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:50:04,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 01:50:06,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:50:06,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:50:06,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:50:06,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:50:06,237 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 15 treesize of output 1 [2023-11-29 01:50:06,389 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 01:50:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3930 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3930 trivial. 0 not checked. [2023-11-29 01:50:06,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:50:06,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:06,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954983737] [2023-11-29 01:50:06,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:50:06,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869580293] [2023-11-29 01:50:06,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869580293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:50:06,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:50:06,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:50:06,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301847586] [2023-11-29 01:50:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:50:06,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:50:06,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:06,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:50:06,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:50:06,400 INFO L87 Difference]: Start difference. First operand 146127 states and 192780 transitions. Second operand has 5 states, 4 states have (on average 50.25) internal successors, (201), 5 states have internal predecessors, (201), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:50:10,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:50:14,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:50:18,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:50:22,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:50:26,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:50:30,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:50:37,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:37,349 INFO L93 Difference]: Finished difference Result 146127 states and 192780 transitions. [2023-11-29 01:50:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:50:37,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 50.25) internal successors, (201), 5 states have internal predecessors, (201), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 973 [2023-11-29 01:50:37,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:37,578 INFO L225 Difference]: With dead ends: 146127 [2023-11-29 01:50:37,578 INFO L226 Difference]: Without dead ends: 146126 [2023-11-29 01:50:37,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 973 GetRequests, 966 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:50:37,604 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 410 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 14 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:37,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1414 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 100 Invalid, 6 Unknown, 0 Unchecked, 24.3s Time] [2023-11-29 01:50:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146126 states. [2023-11-29 01:50:44,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146126 to 146126. [2023-11-29 01:50:44,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146126 states, 140908 states have (on average 1.3071152808924973) internal successors, (184183), 141086 states have internal predecessors, (184183), 4254 states have call successors, (4254), 1015 states have call predecessors, (4254), 959 states have return successors, (4270), 4024 states have call predecessors, (4270), 4254 states have call successors, (4270) [2023-11-29 01:50:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146126 states to 146126 states and 192707 transitions. [2023-11-29 01:50:45,122 INFO L78 Accepts]: Start accepts. Automaton has 146126 states and 192707 transitions. Word has length 973 [2023-11-29 01:50:45,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:45,124 INFO L495 AbstractCegarLoop]: Abstraction has 146126 states and 192707 transitions. [2023-11-29 01:50:45,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 50.25) internal successors, (201), 5 states have internal predecessors, (201), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:50:45,124 INFO L276 IsEmpty]: Start isEmpty. Operand 146126 states and 192707 transitions. [2023-11-29 01:50:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2023-11-29 01:50:45,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:45,209 INFO L195 NwaCegarLoop]: trace histogram [22, 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, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:45,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-29 01:50:45,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 01:50:45,410 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:50:45,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash 37933286, now seen corresponding path program 1 times [2023-11-29 01:50:45,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:45,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439571405] [2023-11-29 01:50:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:45,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:45,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:50:45,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523147240] [2023-11-29 01:50:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:45,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:50:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:50:45,692 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:50:45,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 01:50:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:47,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 4800 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:50:47,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:50:48,019 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 01:50:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3930 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3930 trivial. 0 not checked. [2023-11-29 01:50:48,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:50:48,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:48,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439571405] [2023-11-29 01:50:48,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:50:48,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523147240] [2023-11-29 01:50:48,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523147240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:50:48,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:50:48,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:50:48,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016185637] [2023-11-29 01:50:48,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:50:48,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:50:48,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:48,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:50:48,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:50:48,034 INFO L87 Difference]: Start difference. First operand 146126 states and 192707 transitions. Second operand has 6 states, 5 states have (on average 40.4) internal successors, (202), 6 states have internal predecessors, (202), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:50:54,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:54,904 INFO L93 Difference]: Finished difference Result 148482 states and 195614 transitions. [2023-11-29 01:50:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:50:54,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 40.4) internal successors, (202), 6 states have internal predecessors, (202), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 974 [2023-11-29 01:50:54,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:55,143 INFO L225 Difference]: With dead ends: 148482 [2023-11-29 01:50:55,143 INFO L226 Difference]: Without dead ends: 148481 [2023-11-29 01:50:55,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 966 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:50:55,165 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 408 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:55,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 2004 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:50:55,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148481 states. [2023-11-29 01:51:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148481 to 144167. [2023-11-29 01:51:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144167 states, 139110 states have (on average 1.3072460642656891) internal successors, (181851), 139255 states have internal predecessors, (181851), 4142 states have call successors, (4142), 967 states have call predecessors, (4142), 911 states have return successors, (4158), 3944 states have call predecessors, (4158), 4142 states have call successors, (4158) [2023-11-29 01:51:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144167 states to 144167 states and 190151 transitions. [2023-11-29 01:51:03,090 INFO L78 Accepts]: Start accepts. Automaton has 144167 states and 190151 transitions. Word has length 974 [2023-11-29 01:51:03,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:51:03,091 INFO L495 AbstractCegarLoop]: Abstraction has 144167 states and 190151 transitions. [2023-11-29 01:51:03,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 40.4) internal successors, (202), 6 states have internal predecessors, (202), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:51:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand 144167 states and 190151 transitions. [2023-11-29 01:51:03,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2023-11-29 01:51:03,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:51:03,193 INFO L195 NwaCegarLoop]: trace histogram [22, 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, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:03,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 01:51:03,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 01:51:03,394 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:51:03,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:03,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2112116076, now seen corresponding path program 1 times [2023-11-29 01:51:03,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:03,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054046663] [2023-11-29 01:51:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:03,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:03,648 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:51:03,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519177995] [2023-11-29 01:51:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:03,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:51:03,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:03,649 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:51:03,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 01:51:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:06,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 4891 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:51:06,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:51:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 3924 trivial. 0 not checked. [2023-11-29 01:51:07,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:51:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 3924 trivial. 0 not checked. [2023-11-29 01:51:08,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:08,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054046663] [2023-11-29 01:51:08,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:51:08,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519177995] [2023-11-29 01:51:08,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519177995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:51:08,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:51:08,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2023-11-29 01:51:08,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316098694] [2023-11-29 01:51:08,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:51:08,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:51:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:08,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:51:08,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:51:08,326 INFO L87 Difference]: Start difference. First operand 144167 states and 190151 transitions. Second operand has 12 states, 11 states have (on average 39.81818181818182) internal successors, (438), 12 states have internal predecessors, (438), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:51:20,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:51:20,278 INFO L93 Difference]: Finished difference Result 185650 states and 244488 transitions. [2023-11-29 01:51:20,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:51:20,279 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 39.81818181818182) internal successors, (438), 12 states have internal predecessors, (438), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 982 [2023-11-29 01:51:20,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:51:20,562 INFO L225 Difference]: With dead ends: 185650 [2023-11-29 01:51:20,562 INFO L226 Difference]: Without dead ends: 185649 [2023-11-29 01:51:20,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1962 GetRequests, 1952 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:51:20,583 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 4592 mSDsluCounter, 2983 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4592 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:51:20,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4592 Valid, 3508 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:51:20,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185649 states. [2023-11-29 01:51:29,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185649 to 159737. [2023-11-29 01:51:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159737 states, 154680 states have (on average 1.319957331264546) internal successors, (204171), 154825 states have internal predecessors, (204171), 4142 states have call successors, (4142), 967 states have call predecessors, (4142), 911 states have return successors, (4158), 3944 states have call predecessors, (4158), 4142 states have call successors, (4158) [2023-11-29 01:51:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159737 states to 159737 states and 212471 transitions. [2023-11-29 01:51:29,276 INFO L78 Accepts]: Start accepts. Automaton has 159737 states and 212471 transitions. Word has length 982 [2023-11-29 01:51:29,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:51:29,277 INFO L495 AbstractCegarLoop]: Abstraction has 159737 states and 212471 transitions. [2023-11-29 01:51:29,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 39.81818181818182) internal successors, (438), 12 states have internal predecessors, (438), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:51:29,278 INFO L276 IsEmpty]: Start isEmpty. Operand 159737 states and 212471 transitions. [2023-11-29 01:51:29,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2023-11-29 01:51:29,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:51:29,362 INFO L195 NwaCegarLoop]: trace histogram [22, 11, 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, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:51:29,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-29 01:51:29,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 01:51:29,563 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:51:29,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:29,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1400216875, now seen corresponding path program 1 times [2023-11-29 01:51:29,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:29,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61964203] [2023-11-29 01:51:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:29,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:29,840 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:51:29,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914965222] [2023-11-29 01:51:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:29,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:51:29,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:29,841 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:51:29,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 01:51:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:32,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 5187 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 01:51:32,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:51:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4393 backedges. 687 proven. 177 refuted. 0 times theorem prover too weak. 3529 trivial. 0 not checked. [2023-11-29 01:51:33,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:51:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4393 backedges. 528 proven. 447 refuted. 0 times theorem prover too weak. 3418 trivial. 0 not checked. [2023-11-29 01:51:35,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:35,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61964203] [2023-11-29 01:51:35,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:51:35,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914965222] [2023-11-29 01:51:35,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914965222] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:51:35,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:51:35,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 34] total 49 [2023-11-29 01:51:35,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090137904] [2023-11-29 01:51:35,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:51:35,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 01:51:35,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:35,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 01:51:35,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=1692, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 01:51:35,349 INFO L87 Difference]: Start difference. First operand 159737 states and 212471 transitions. Second operand has 50 states, 49 states have (on average 9.693877551020408) internal successors, (475), 50 states have internal predecessors, (475), 23 states have call successors, (37), 16 states have call predecessors, (37), 17 states have return successors, (36), 22 states have call predecessors, (36), 21 states have call successors, (36) [2023-11-29 01:51:45,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:51:45,280 INFO L93 Difference]: Finished difference Result 161843 states and 215388 transitions. [2023-11-29 01:51:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-29 01:51:45,281 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 9.693877551020408) internal successors, (475), 50 states have internal predecessors, (475), 23 states have call successors, (37), 16 states have call predecessors, (37), 17 states have return successors, (36), 22 states have call predecessors, (36), 21 states have call successors, (36) Word has length 1028 [2023-11-29 01:51:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:51:45,512 INFO L225 Difference]: With dead ends: 161843 [2023-11-29 01:51:45,512 INFO L226 Difference]: Without dead ends: 161842 [2023-11-29 01:51:45,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2108 GetRequests, 2011 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2526 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3304, Invalid=6202, Unknown=0, NotChecked=0, Total=9506 [2023-11-29 01:51:45,532 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 4931 mSDsluCounter, 5006 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4942 SdHoareTripleChecker+Valid, 5620 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:51:45,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4942 Valid, 5620 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:51:45,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161842 states. [2023-11-29 01:51:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161842 to 160769. [2023-11-29 01:51:54,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160769 states, 155628 states have (on average 1.3197046803917032) internal successors, (205383), 155773 states have internal predecessors, (205383), 4190 states have call successors, (4190), 1003 states have call predecessors, (4190), 947 states have return successors, (4206), 3992 states have call predecessors, (4206), 4190 states have call successors, (4206) [2023-11-29 01:51:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160769 states to 160769 states and 213779 transitions. [2023-11-29 01:51:54,403 INFO L78 Accepts]: Start accepts. Automaton has 160769 states and 213779 transitions. Word has length 1028 [2023-11-29 01:51:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:51:54,404 INFO L495 AbstractCegarLoop]: Abstraction has 160769 states and 213779 transitions. [2023-11-29 01:51:54,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 9.693877551020408) internal successors, (475), 50 states have internal predecessors, (475), 23 states have call successors, (37), 16 states have call predecessors, (37), 17 states have return successors, (36), 22 states have call predecessors, (36), 21 states have call successors, (36) [2023-11-29 01:51:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 160769 states and 213779 transitions. [2023-11-29 01:51:54,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2023-11-29 01:51:54,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:51:54,501 INFO L195 NwaCegarLoop]: trace histogram [22, 11, 11, 11, 11, 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, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:54,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-29 01:51:54,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 01:51:54,701 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:51:54,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2091809524, now seen corresponding path program 2 times [2023-11-29 01:51:54,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:54,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217497947] [2023-11-29 01:51:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:54,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:55,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:51:55,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893803045] [2023-11-29 01:51:55,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:51:55,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:51:55,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:55,192 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:51:55,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-29 01:51:57,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:51:57,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:51:57,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:51:57,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:51:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4424 trivial. 0 not checked. [2023-11-29 01:51:57,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:51:57,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:57,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217497947] [2023-11-29 01:51:57,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:51:57,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893803045] [2023-11-29 01:51:57,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893803045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:51:57,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:51:57,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:51:57,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765710059] [2023-11-29 01:51:57,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:51:57,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:51:57,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:51:57,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:51:57,236 INFO L87 Difference]: Start difference. First operand 160769 states and 213779 transitions. Second operand has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:52:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:52:05,093 INFO L93 Difference]: Finished difference Result 199343 states and 267722 transitions. [2023-11-29 01:52:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:52:05,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1042 [2023-11-29 01:52:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:52:05,391 INFO L225 Difference]: With dead ends: 199343 [2023-11-29 01:52:05,391 INFO L226 Difference]: Without dead ends: 168854 [2023-11-29 01:52:05,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1041 GetRequests, 1035 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:52:05,416 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 27 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:52:05,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1867 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:52:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168854 states. [2023-11-29 01:52:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168854 to 167369. [2023-11-29 01:52:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167369 states, 162228 states have (on average 1.3148346771210888) internal successors, (213303), 162373 states have internal predecessors, (213303), 4190 states have call successors, (4190), 1003 states have call predecessors, (4190), 947 states have return successors, (4206), 3992 states have call predecessors, (4206), 4190 states have call successors, (4206) [2023-11-29 01:52:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167369 states to 167369 states and 221699 transitions. [2023-11-29 01:52:14,076 INFO L78 Accepts]: Start accepts. Automaton has 167369 states and 221699 transitions. Word has length 1042 [2023-11-29 01:52:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:52:14,077 INFO L495 AbstractCegarLoop]: Abstraction has 167369 states and 221699 transitions. [2023-11-29 01:52:14,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:52:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 167369 states and 221699 transitions. [2023-11-29 01:52:14,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2023-11-29 01:52:14,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:52:14,165 INFO L195 NwaCegarLoop]: trace histogram [22, 11, 11, 11, 11, 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, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:14,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-11-29 01:52:14,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 01:52:14,365 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:52:14,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:52:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1064134224, now seen corresponding path program 1 times [2023-11-29 01:52:14,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:52:14,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300849337] [2023-11-29 01:52:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:14,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:52:14,682 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:52:14,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991306657] [2023-11-29 01:52:14,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:14,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:14,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:52:14,683 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:52:14,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-29 01:52:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:52:17,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 5216 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:52:17,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:52:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4424 backedges. 0 proven. 500 refuted. 0 times theorem prover too weak. 3924 trivial. 0 not checked. [2023-11-29 01:52:18,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:52:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4424 backedges. 0 proven. 500 refuted. 0 times theorem prover too weak. 3924 trivial. 0 not checked. [2023-11-29 01:52:19,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:52:19,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300849337] [2023-11-29 01:52:19,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:52:19,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991306657] [2023-11-29 01:52:19,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991306657] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:52:19,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:52:19,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2023-11-29 01:52:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821118299] [2023-11-29 01:52:19,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:52:19,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:52:19,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:52:19,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:52:19,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:52:19,969 INFO L87 Difference]: Start difference. First operand 167369 states and 221699 transitions. Second operand has 24 states, 23 states have (on average 24.347826086956523) internal successors, (560), 24 states have internal predecessors, (560), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:52:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:52:45,528 INFO L93 Difference]: Finished difference Result 285958 states and 374742 transitions. [2023-11-29 01:52:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:52:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 24.347826086956523) internal successors, (560), 24 states have internal predecessors, (560), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 1043 [2023-11-29 01:52:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:52:45,980 INFO L225 Difference]: With dead ends: 285958 [2023-11-29 01:52:45,980 INFO L226 Difference]: Without dead ends: 285957 [2023-11-29 01:52:46,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2084 GetRequests, 2062 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:52:46,012 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 16985 mSDsluCounter, 6547 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16985 SdHoareTripleChecker+Valid, 7072 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:52:46,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16985 Valid, 7072 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:52:46,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285957 states. [2023-11-29 01:52:57,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285957 to 205709. [2023-11-29 01:52:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205709 states, 200568 states have (on average 1.3291402417135336) internal successors, (266583), 200713 states have internal predecessors, (266583), 4190 states have call successors, (4190), 1003 states have call predecessors, (4190), 947 states have return successors, (4206), 3992 states have call predecessors, (4206), 4190 states have call successors, (4206) [2023-11-29 01:52:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205709 states to 205709 states and 274979 transitions. [2023-11-29 01:52:58,371 INFO L78 Accepts]: Start accepts. Automaton has 205709 states and 274979 transitions. Word has length 1043 [2023-11-29 01:52:58,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:52:58,372 INFO L495 AbstractCegarLoop]: Abstraction has 205709 states and 274979 transitions. [2023-11-29 01:52:58,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 24.347826086956523) internal successors, (560), 24 states have internal predecessors, (560), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:52:58,372 INFO L276 IsEmpty]: Start isEmpty. Operand 205709 states and 274979 transitions. [2023-11-29 01:52:58,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1120 [2023-11-29 01:52:58,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:52:58,710 INFO L195 NwaCegarLoop]: trace histogram [176, 18, 18, 17, 17, 17, 17, 17, 17, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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] [2023-11-29 01:52:58,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-11-29 01:52:58,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 01:52:58,911 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:52:58,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:52:58,911 INFO L85 PathProgramCache]: Analyzing trace with hash -554382404, now seen corresponding path program 1 times [2023-11-29 01:52:58,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:52:58,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741251196] [2023-11-29 01:52:58,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:58,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:52:59,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:52:59,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377983542] [2023-11-29 01:52:59,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:52:59,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:52:59,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:52:59,281 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:52:59,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 01:53:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:02,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 8265 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-29 01:53:02,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:53:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22412 backedges. 480 proven. 20133 refuted. 0 times theorem prover too weak. 1799 trivial. 0 not checked. [2023-11-29 01:53:03,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:53:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 22412 backedges. 480 proven. 2854 refuted. 0 times theorem prover too weak. 19078 trivial. 0 not checked. [2023-11-29 01:53:07,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:07,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741251196] [2023-11-29 01:53:07,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:53:07,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377983542] [2023-11-29 01:53:07,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377983542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:53:07,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:53:07,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 64] total 85 [2023-11-29 01:53:07,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721350087] [2023-11-29 01:53:07,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:53:07,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-11-29 01:53:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:07,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-11-29 01:53:07,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1568, Invalid=5742, Unknown=0, NotChecked=0, Total=7310 [2023-11-29 01:53:07,230 INFO L87 Difference]: Start difference. First operand 205709 states and 274979 transitions. Second operand has 86 states, 85 states have (on average 18.176470588235293) internal successors, (1545), 72 states have internal predecessors, (1545), 33 states have call successors, (73), 34 states have call predecessors, (73), 36 states have return successors, (72), 32 states have call predecessors, (72), 33 states have call successors, (72) [2023-11-29 01:53:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:40,803 INFO L93 Difference]: Finished difference Result 420138 states and 570863 transitions. [2023-11-29 01:53:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-11-29 01:53:40,804 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 18.176470588235293) internal successors, (1545), 72 states have internal predecessors, (1545), 33 states have call successors, (73), 34 states have call predecessors, (73), 36 states have return successors, (72), 32 states have call predecessors, (72), 33 states have call successors, (72) Word has length 1119 [2023-11-29 01:53:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:41,554 INFO L225 Difference]: With dead ends: 420138 [2023-11-29 01:53:41,554 INFO L226 Difference]: Without dead ends: 420129 [2023-11-29 01:53:41,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2367 GetRequests, 2185 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8774 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=9791, Invalid=23881, Unknown=0, NotChecked=0, Total=33672 [2023-11-29 01:53:41,611 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 40764 mSDsluCounter, 29271 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 3164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40875 SdHoareTripleChecker+Valid, 29815 SdHoareTripleChecker+Invalid, 6172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3164 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:41,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40875 Valid, 29815 Invalid, 6172 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3164 Valid, 3008 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 01:53:41,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420129 states. [2023-11-29 01:53:55,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420129 to 223238. [2023-11-29 01:53:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223238 states, 217641 states have (on average 1.330760288732362) internal successors, (289628), 217789 states have internal predecessors, (289628), 4464 states have call successors, (4464), 1189 states have call predecessors, (4464), 1129 states have return successors, (4504), 4259 states have call predecessors, (4504), 4464 states have call successors, (4504) [2023-11-29 01:53:56,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223238 states to 223238 states and 298596 transitions. [2023-11-29 01:53:56,251 INFO L78 Accepts]: Start accepts. Automaton has 223238 states and 298596 transitions. Word has length 1119 [2023-11-29 01:53:56,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:56,252 INFO L495 AbstractCegarLoop]: Abstraction has 223238 states and 298596 transitions. [2023-11-29 01:53:56,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 18.176470588235293) internal successors, (1545), 72 states have internal predecessors, (1545), 33 states have call successors, (73), 34 states have call predecessors, (73), 36 states have return successors, (72), 32 states have call predecessors, (72), 33 states have call successors, (72) [2023-11-29 01:53:56,252 INFO L276 IsEmpty]: Start isEmpty. Operand 223238 states and 298596 transitions. [2023-11-29 01:53:56,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1179 [2023-11-29 01:53:56,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:56,368 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:53:56,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-29 01:53:56,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 01:53:56,569 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:53:56,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:56,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1500902827, now seen corresponding path program 2 times [2023-11-29 01:53:56,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:56,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166802508] [2023-11-29 01:53:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:56,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:56,850 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:53:56,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077617790] [2023-11-29 01:53:56,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:53:56,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:53:56,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:53:56,851 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:53:56,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 01:53:59,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:53:59,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:53:59,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:53:59,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:53:59,360 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 15 treesize of output 1 [2023-11-29 01:53:59,366 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 01:53:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6148 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6136 trivial. 0 not checked. [2023-11-29 01:53:59,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:53:59,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:59,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166802508] [2023-11-29 01:53:59,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:53:59,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077617790] [2023-11-29 01:53:59,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077617790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:53:59,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:53:59,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:53:59,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172698252] [2023-11-29 01:53:59,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:53:59,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:53:59,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:59,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:53:59,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:53:59,386 INFO L87 Difference]: Start difference. First operand 223238 states and 298596 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 01:54:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:13,305 INFO L93 Difference]: Finished difference Result 244584 states and 325847 transitions. [2023-11-29 01:54:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:54:13,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 1178 [2023-11-29 01:54:13,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:13,705 INFO L225 Difference]: With dead ends: 244584 [2023-11-29 01:54:13,705 INFO L226 Difference]: Without dead ends: 239984 [2023-11-29 01:54:13,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1178 GetRequests, 1175 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 01:54:13,740 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 423 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:13,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1526 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:54:13,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239984 states. [2023-11-29 01:54:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239984 to 223235. [2023-11-29 01:54:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223235 states, 217638 states have (on average 1.3306821419053658) internal successors, (289607), 217786 states have internal predecessors, (289607), 4464 states have call successors, (4464), 1189 states have call predecessors, (4464), 1129 states have return successors, (4504), 4259 states have call predecessors, (4504), 4464 states have call successors, (4504) [2023-11-29 01:54:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223235 states to 223235 states and 298575 transitions. [2023-11-29 01:54:29,206 INFO L78 Accepts]: Start accepts. Automaton has 223235 states and 298575 transitions. Word has length 1178 [2023-11-29 01:54:29,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:54:29,207 INFO L495 AbstractCegarLoop]: Abstraction has 223235 states and 298575 transitions. [2023-11-29 01:54:29,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-29 01:54:29,208 INFO L276 IsEmpty]: Start isEmpty. Operand 223235 states and 298575 transitions. [2023-11-29 01:54:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1164 [2023-11-29 01:54:29,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:54:29,348 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 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, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:29,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-29 01:54:29,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-29 01:54:29,549 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:54:29,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:54:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1564151024, now seen corresponding path program 2 times [2023-11-29 01:54:29,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:54:29,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595867635] [2023-11-29 01:54:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:54:29,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:54:30,062 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:54:30,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042830163] [2023-11-29 01:54:30,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:54:30,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:54:30,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:54:30,063 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:54:30,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 01:54:32,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:54:32,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:54:32,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:54:32,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:54:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6344 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6344 trivial. 0 not checked. [2023-11-29 01:54:32,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:54:32,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:54:32,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595867635] [2023-11-29 01:54:32,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:54:32,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042830163] [2023-11-29 01:54:32,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042830163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:54:32,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:54:32,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:54:32,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617866303] [2023-11-29 01:54:32,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:54:32,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:54:32,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:54:32,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:54:32,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:54:32,472 INFO L87 Difference]: Start difference. First operand 223235 states and 298575 transitions. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:54:46,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:46,247 INFO L93 Difference]: Finished difference Result 315924 states and 427770 transitions. [2023-11-29 01:54:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:54:46,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1163 [2023-11-29 01:54:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:46,725 INFO L225 Difference]: With dead ends: 315924 [2023-11-29 01:54:46,725 INFO L226 Difference]: Without dead ends: 230273 [2023-11-29 01:54:46,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 1157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:54:46,775 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 47 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:46,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 2595 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:54:46,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230273 states. [2023-11-29 01:55:01,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230273 to 227145. [2023-11-29 01:55:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227145 states, 221548 states have (on average 1.33543521042844) internal successors, (295863), 221696 states have internal predecessors, (295863), 4464 states have call successors, (4464), 1189 states have call predecessors, (4464), 1129 states have return successors, (4504), 4259 states have call predecessors, (4504), 4464 states have call successors, (4504) [2023-11-29 01:55:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227145 states to 227145 states and 304831 transitions. [2023-11-29 01:55:01,887 INFO L78 Accepts]: Start accepts. Automaton has 227145 states and 304831 transitions. Word has length 1163 [2023-11-29 01:55:01,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:01,888 INFO L495 AbstractCegarLoop]: Abstraction has 227145 states and 304831 transitions. [2023-11-29 01:55:01,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 01:55:01,889 INFO L276 IsEmpty]: Start isEmpty. Operand 227145 states and 304831 transitions. [2023-11-29 01:55:02,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1165 [2023-11-29 01:55:02,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:02,074 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 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, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:02,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-29 01:55:02,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:02,275 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:55:02,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:02,275 INFO L85 PathProgramCache]: Analyzing trace with hash -363990975, now seen corresponding path program 1 times [2023-11-29 01:55:02,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:02,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818576533] [2023-11-29 01:55:02,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:02,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:02,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:55:02,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369517164] [2023-11-29 01:55:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:02,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:02,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:02,660 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:02,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-29 01:55:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:06,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 5865 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:55:06,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6344 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3924 trivial. 0 not checked. [2023-11-29 01:55:07,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:55:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6344 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3924 trivial. 0 not checked. [2023-11-29 01:55:09,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818576533] [2023-11-29 01:55:09,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:55:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369517164] [2023-11-29 01:55:09,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369517164] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:55:09,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:55:09,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 47 [2023-11-29 01:55:09,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912571379] [2023-11-29 01:55:09,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:55:09,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 01:55:09,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:09,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 01:55:09,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:55:09,453 INFO L87 Difference]: Start difference. First operand 227145 states and 304831 transitions. Second operand has 48 states, 47 states have (on average 17.06382978723404) internal successors, (802), 48 states have internal predecessors, (802), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:56:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:56:39,619 INFO L93 Difference]: Finished difference Result 552400 states and 721480 transitions. [2023-11-29 01:56:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 01:56:39,620 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 17.06382978723404) internal successors, (802), 48 states have internal predecessors, (802), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 1164 [2023-11-29 01:56:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:56:40,740 INFO L225 Difference]: With dead ends: 552400 [2023-11-29 01:56:40,740 INFO L226 Difference]: Without dead ends: 552399 [2023-11-29 01:56:40,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2326 GetRequests, 2280 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:56:40,815 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 34065 mSDsluCounter, 13675 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 1035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34065 SdHoareTripleChecker+Valid, 14200 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1035 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:56:40,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34065 Valid, 14200 Invalid, 1914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1035 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 01:56:41,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552399 states. [2023-11-29 01:57:03,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552399 to 318129. [2023-11-29 01:57:04,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318129 states, 312532 states have (on average 1.353970153456286) internal successors, (423159), 312680 states have internal predecessors, (423159), 4464 states have call successors, (4464), 1189 states have call predecessors, (4464), 1129 states have return successors, (4504), 4259 states have call predecessors, (4504), 4464 states have call successors, (4504) [2023-11-29 01:57:04,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318129 states to 318129 states and 432127 transitions. [2023-11-29 01:57:04,753 INFO L78 Accepts]: Start accepts. Automaton has 318129 states and 432127 transitions. Word has length 1164 [2023-11-29 01:57:04,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:04,754 INFO L495 AbstractCegarLoop]: Abstraction has 318129 states and 432127 transitions. [2023-11-29 01:57:04,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 17.06382978723404) internal successors, (802), 48 states have internal predecessors, (802), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 01:57:04,754 INFO L276 IsEmpty]: Start isEmpty. Operand 318129 states and 432127 transitions. [2023-11-29 01:57:04,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1256 [2023-11-29 01:57:04,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:04,916 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 11, 11, 11, 11, 11, 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, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:57:04,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-29 01:57:05,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:05,117 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:57:05,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:05,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1727187957, now seen corresponding path program 1 times [2023-11-29 01:57:05,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:05,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702506613] [2023-11-29 01:57:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:05,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:05,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:57:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680365921] [2023-11-29 01:57:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:05,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:57:05,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:05,828 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:57:05,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-29 01:57:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:09,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 6128 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-29 01:57:09,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:57:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6015 backedges. 675 proven. 695 refuted. 0 times theorem prover too weak. 4645 trivial. 0 not checked. [2023-11-29 01:57:10,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:57:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6015 backedges. 528 proven. 2069 refuted. 0 times theorem prover too weak. 3418 trivial. 0 not checked. [2023-11-29 01:57:15,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:15,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702506613] [2023-11-29 01:57:15,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:57:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680365921] [2023-11-29 01:57:15,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680365921] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:57:15,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:57:15,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 70] total 97 [2023-11-29 01:57:15,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295427302] [2023-11-29 01:57:15,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:57:15,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-11-29 01:57:15,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:15,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-11-29 01:57:15,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2954, Invalid=6552, Unknown=0, NotChecked=0, Total=9506 [2023-11-29 01:57:15,381 INFO L87 Difference]: Start difference. First operand 318129 states and 432127 transitions. Second operand has 98 states, 97 states have (on average 8.463917525773196) internal successors, (821), 98 states have internal predecessors, (821), 47 states have call successors, (61), 29 states have call predecessors, (61), 30 states have return successors, (60), 46 states have call predecessors, (60), 45 states have call successors, (60) [2023-11-29 01:57:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:40,189 INFO L93 Difference]: Finished difference Result 321279 states and 436396 transitions. [2023-11-29 01:57:40,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2023-11-29 01:57:40,190 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 8.463917525773196) internal successors, (821), 98 states have internal predecessors, (821), 47 states have call successors, (61), 29 states have call predecessors, (61), 30 states have return successors, (60), 46 states have call predecessors, (60), 45 states have call successors, (60) Word has length 1255 [2023-11-29 01:57:40,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:40,791 INFO L225 Difference]: With dead ends: 321279 [2023-11-29 01:57:40,791 INFO L226 Difference]: Without dead ends: 321278 [2023-11-29 01:57:40,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2610 GetRequests, 2417 SyntacticMatches, 1 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10002 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=13090, Invalid=24352, Unknown=0, NotChecked=0, Total=37442 [2023-11-29 01:57:40,823 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 8183 mSDsluCounter, 6933 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8194 SdHoareTripleChecker+Valid, 7600 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:40,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8194 Valid, 7600 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:57:41,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321278 states. [2023-11-29 01:58:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321278 to 320193. [2023-11-29 01:58:00,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320193 states, 314428 states have (on average 1.3535149541389444) internal successors, (425583), 314576 states have internal predecessors, (425583), 4560 states have call successors, (4560), 1261 states have call predecessors, (4560), 1201 states have return successors, (4600), 4355 states have call predecessors, (4600), 4560 states have call successors, (4600) [2023-11-29 01:58:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320193 states to 320193 states and 434743 transitions. [2023-11-29 01:58:01,001 INFO L78 Accepts]: Start accepts. Automaton has 320193 states and 434743 transitions. Word has length 1255 [2023-11-29 01:58:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:01,002 INFO L495 AbstractCegarLoop]: Abstraction has 320193 states and 434743 transitions. [2023-11-29 01:58:01,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 8.463917525773196) internal successors, (821), 98 states have internal predecessors, (821), 47 states have call successors, (61), 29 states have call predecessors, (61), 30 states have return successors, (60), 46 states have call predecessors, (60), 45 states have call successors, (60) [2023-11-29 01:58:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 320193 states and 434743 transitions. [2023-11-29 01:58:01,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1310 [2023-11-29 01:58:01,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:01,177 INFO L195 NwaCegarLoop]: trace histogram [164, 23, 23, 23, 23, 23, 23, 22, 22, 22, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:01,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-29 01:58:01,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:01,378 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:58:01,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash -326567744, now seen corresponding path program 2 times [2023-11-29 01:58:01,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:01,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357016958] [2023-11-29 01:58:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:01,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:02,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:58:02,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136168460] [2023-11-29 01:58:02,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:58:02,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:02,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:02,113 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:02,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-29 01:58:04,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:58:04,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:58:04,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:58:04,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22639 backedges. 2736 proven. 0 refuted. 0 times theorem prover too weak. 19903 trivial. 0 not checked. [2023-11-29 01:58:05,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:58:05,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:05,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357016958] [2023-11-29 01:58:05,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:58:05,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136168460] [2023-11-29 01:58:05,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136168460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:05,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:05,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:58:05,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653304407] [2023-11-29 01:58:05,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:05,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:58:05,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:05,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:58:05,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:58:05,234 INFO L87 Difference]: Start difference. First operand 320193 states and 434743 transitions. Second operand has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 7 states have internal predecessors, (195), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 01:58:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:24,244 INFO L93 Difference]: Finished difference Result 644734 states and 876467 transitions. [2023-11-29 01:58:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:58:24,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 7 states have internal predecessors, (195), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 1309 [2023-11-29 01:58:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:24,897 INFO L225 Difference]: With dead ends: 644734 [2023-11-29 01:58:24,897 INFO L226 Difference]: Without dead ends: 324593 [2023-11-29 01:58:25,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1309 GetRequests, 1303 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:58:25,033 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 17 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:25,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2784 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:58:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324593 states. [2023-11-29 01:58:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324593 to 323713. [2023-11-29 01:58:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323713 states, 317948 states have (on average 1.3523689408330921) internal successors, (429983), 318096 states have internal predecessors, (429983), 4560 states have call successors, (4560), 1261 states have call predecessors, (4560), 1201 states have return successors, (4600), 4355 states have call predecessors, (4600), 4560 states have call successors, (4600) [2023-11-29 01:58:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323713 states to 323713 states and 439143 transitions. [2023-11-29 01:58:44,910 INFO L78 Accepts]: Start accepts. Automaton has 323713 states and 439143 transitions. Word has length 1309 [2023-11-29 01:58:44,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:44,910 INFO L495 AbstractCegarLoop]: Abstraction has 323713 states and 439143 transitions. [2023-11-29 01:58:44,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 7 states have internal predecessors, (195), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-29 01:58:44,910 INFO L276 IsEmpty]: Start isEmpty. Operand 323713 states and 439143 transitions. [2023-11-29 01:58:45,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1317 [2023-11-29 01:58:45,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:45,085 INFO L195 NwaCegarLoop]: trace histogram [164, 23, 23, 23, 23, 23, 23, 22, 22, 22, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:45,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-29 01:58:45,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:45,286 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:58:45,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:45,286 INFO L85 PathProgramCache]: Analyzing trace with hash 19310262, now seen corresponding path program 1 times [2023-11-29 01:58:45,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:45,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464512306] [2023-11-29 01:58:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:45,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:46,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:58:46,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408644762] [2023-11-29 01:58:46,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:46,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:46,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:46,096 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:46,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af5e1d85-bb1b-4832-a978-975d196333d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-29 01:58:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:50,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 9927 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 01:58:50,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 22660 backedges. 0 proven. 4531 refuted. 0 times theorem prover too weak. 18129 trivial. 0 not checked. [2023-11-29 01:58:51,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 22660 backedges. 0 proven. 20030 refuted. 0 times theorem prover too weak. 2630 trivial. 0 not checked. [2023-11-29 01:58:56,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:56,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464512306] [2023-11-29 01:58:56,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:58:56,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408644762] [2023-11-29 01:58:56,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408644762] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:56,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:58:56,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 68] total 93 [2023-11-29 01:58:56,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196069980] [2023-11-29 01:58:56,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:56,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-11-29 01:58:56,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:56,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-11-29 01:58:56,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2870, Invalid=5872, Unknown=0, NotChecked=0, Total=8742 [2023-11-29 01:58:56,142 INFO L87 Difference]: Start difference. First operand 323713 states and 439143 transitions. Second operand has 94 states, 93 states have (on average 20.247311827956988) internal successors, (1883), 94 states have internal predecessors, (1883), 47 states have call successors, (108), 48 states have call predecessors, (108), 47 states have return successors, (106), 47 states have call predecessors, (106), 47 states have call successors, (106)