./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/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_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/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_122dec5f-6b73-4321-b43b-d6d1560ea530/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 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:20:41,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:20:41,073 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 01:20:41,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:20:41,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:20:41,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:20:41,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:20:41,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:20:41,104 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:20:41,104 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:20:41,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:20:41,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:20:41,106 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:20:41,107 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:20:41,107 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:20:41,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:20:41,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:20:41,109 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:20:41,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:20:41,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:20:41,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:20:41,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:20:41,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:20:41,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:20:41,112 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 01:20:41,113 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 01:20:41,113 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:20:41,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:20:41,114 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:20:41,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:20:41,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:20:41,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:20:41,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:20:41,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:20:41,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:20:41,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:20:41,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:20:41,118 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:20:41,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:20:41,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:20:41,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:20:41,119 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:20:41,120 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:20:41,120 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:20:41,120 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_122dec5f-6b73-4321-b43b-d6d1560ea530/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 [2023-11-29 01:20:41,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:20:41,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:20:41,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:20:41,360 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:20:41,360 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:20:41,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2023-11-29 01:20:44,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:20:44,443 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:20:44,443 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2023-11-29 01:20:44,462 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/data/7bc47cc62/773b3ebbd6cb44c8a73c67dc407935ff/FLAGae159578c [2023-11-29 01:20:44,477 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/data/7bc47cc62/773b3ebbd6cb44c8a73c67dc407935ff [2023-11-29 01:20:44,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:20:44,481 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:20:44,482 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:20:44,482 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:20:44,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:20:44,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:20:44" (1/1) ... [2023-11-29 01:20:44,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6158cc2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:44, skipping insertion in model container [2023-11-29 01:20:44,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:20:44" (1/1) ... [2023-11-29 01:20:44,563 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:20:45,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:20:45,200 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:20:45,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:20:45,367 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:20:45,375 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:20:45,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45 WrapperNode [2023-11-29 01:20:45,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:20:45,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:20:45,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:20:45,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:20:45,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,491 INFO L138 Inliner]: procedures = 282, calls = 298, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1383 [2023-11-29 01:20:45,492 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:20:45,493 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:20:45,493 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:20:45,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:20:45,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,643 INFO L175 MemorySlicer]: Split 264 memory accesses to 5 slices as follows [2, 5, 34, 3, 220]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 56 writes are split as follows [0, 1, 4, 2, 49]. [2023-11-29 01:20:45,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,644 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,698 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,727 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:20:45,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:20:45,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:20:45,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:20:45,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (1/1) ... [2023-11-29 01:20:45,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:20:45,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:45,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:20:45,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:20:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-29 01:20:45,814 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-29 01:20:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:20:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 01:20:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:20:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:20:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:20:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:20:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 01:20:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:20:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-29 01:20:45,815 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-29 01:20:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:20:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:20:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:20:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:20:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:20:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:20:45,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:20:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:20:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:20:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:20:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:20:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:20:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:20:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:20:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-29 01:20:45,817 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-29 01:20:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:20:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:20:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:20:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:20:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 01:20:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-29 01:20:45,818 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-29 01:20:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:20:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:20:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:20:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:20:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:20:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:20:45,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:20:46,035 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:20:46,038 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:20:47,285 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:20:47,341 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:20:47,341 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-29 01:20:47,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:20:47 BoogieIcfgContainer [2023-11-29 01:20:47,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:20:47,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:20:47,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:20:47,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:20:47,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:20:44" (1/3) ... [2023-11-29 01:20:47,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309634bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:20:47, skipping insertion in model container [2023-11-29 01:20:47,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:20:45" (2/3) ... [2023-11-29 01:20:47,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309634bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:20:47, skipping insertion in model container [2023-11-29 01:20:47,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:20:47" (3/3) ... [2023-11-29 01:20:47,351 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-1.i [2023-11-29 01:20:47,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:20:47,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 01:20:47,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:20:47,435 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;@7575f865, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:20:47,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-29 01:20:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 373 states have (on average 1.6916890080428955) internal successors, (631), 390 states have internal predecessors, (631), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 01:20:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 01:20:47,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:47,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:20:47,449 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 01:20:47,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:47,455 INFO L85 PathProgramCache]: Analyzing trace with hash -595235965, now seen corresponding path program 1 times [2023-11-29 01:20:47,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:47,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660418100] [2023-11-29 01:20:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:47,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:47,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:47,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660418100] [2023-11-29 01:20:47,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:20:47,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545110990] [2023-11-29 01:20:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:47,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:47,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:47,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:47,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:20:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:47,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:20:47,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:47,822 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 01:20:47,823 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:20:47,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545110990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:47,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:47,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:20:47,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508150727] [2023-11-29 01:20:47,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:47,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:20:47,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:47,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:20:47,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:20:47,857 INFO L87 Difference]: Start difference. First operand has 410 states, 373 states have (on average 1.6916890080428955) internal successors, (631), 390 states have internal predecessors, (631), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) 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 01:20:47,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:47,939 INFO L93 Difference]: Finished difference Result 814 states and 1338 transitions. [2023-11-29 01:20:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:20:47,941 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 01:20:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:47,955 INFO L225 Difference]: With dead ends: 814 [2023-11-29 01:20:47,955 INFO L226 Difference]: Without dead ends: 393 [2023-11-29 01:20:47,961 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 01:20:47,965 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:47,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 581 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:20:47,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-11-29 01:20:48,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2023-11-29 01:20:48,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 365 states have (on average 1.5095890410958903) internal successors, (551), 379 states have internal predecessors, (551), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:20:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 571 transitions. [2023-11-29 01:20:48,030 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 571 transitions. Word has length 6 [2023-11-29 01:20:48,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:48,030 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 571 transitions. [2023-11-29 01:20:48,030 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 01:20:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 571 transitions. [2023-11-29 01:20:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 01:20:48,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:48,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:20:48,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:20:48,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:20:48,232 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 01:20:48,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:48,233 INFO L85 PathProgramCache]: Analyzing trace with hash -595234043, now seen corresponding path program 1 times [2023-11-29 01:20:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:48,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821487436] [2023-11-29 01:20:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:48,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:48,262 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:48,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094781740] [2023-11-29 01:20:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:48,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:48,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:48,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:48,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:20:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:48,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:20:48,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:48,511 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 01:20:48,539 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 01:20:48,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:20:48,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:48,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821487436] [2023-11-29 01:20:48,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:48,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094781740] [2023-11-29 01:20:48,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094781740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:48,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:48,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:20:48,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489565388] [2023-11-29 01:20:48,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:48,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:20:48,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:20:48,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:20:48,543 INFO L87 Difference]: Start difference. First operand 393 states and 571 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 01:20:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:48,734 INFO L93 Difference]: Finished difference Result 757 states and 1114 transitions. [2023-11-29 01:20:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:20:48,735 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 01:20:48,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:48,742 INFO L225 Difference]: With dead ends: 757 [2023-11-29 01:20:48,742 INFO L226 Difference]: Without dead ends: 755 [2023-11-29 01:20:48,743 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 01:20:48,744 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 518 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:48,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1680 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:20:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-11-29 01:20:48,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 399. [2023-11-29 01:20:48,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 371 states have (on average 1.5040431266846361) internal successors, (558), 385 states have internal predecessors, (558), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:20:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 578 transitions. [2023-11-29 01:20:48,775 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 578 transitions. Word has length 6 [2023-11-29 01:20:48,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:48,776 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 578 transitions. [2023-11-29 01:20:48,776 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 01:20:48,776 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 578 transitions. [2023-11-29 01:20:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 01:20:48,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:48,780 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 01:20:48,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:20:48,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:48,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:20:48,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:48,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1582256787, now seen corresponding path program 1 times [2023-11-29 01:20:48,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:48,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560230505] [2023-11-29 01:20:48,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:48,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:49,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:49,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902004199] [2023-11-29 01:20:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:49,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:49,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:49,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:49,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:20:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:49,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:20:49,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:49,272 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 01:20:49,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:20:49,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:49,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560230505] [2023-11-29 01:20:49,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:49,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902004199] [2023-11-29 01:20:49,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902004199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:49,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:49,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:20:49,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361423206] [2023-11-29 01:20:49,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:49,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:20:49,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:49,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:20:49,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:20:49,276 INFO L87 Difference]: Start difference. First operand 399 states and 578 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 01:20:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:49,377 INFO L93 Difference]: Finished difference Result 812 states and 1179 transitions. [2023-11-29 01:20:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:20:49,378 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 01:20:49,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:49,381 INFO L225 Difference]: With dead ends: 812 [2023-11-29 01:20:49,382 INFO L226 Difference]: Without dead ends: 420 [2023-11-29 01:20:49,383 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 01:20:49,384 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 9 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:49,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1074 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:20:49,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-11-29 01:20:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2023-11-29 01:20:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 391 states have (on average 1.4782608695652173) internal successors, (578), 405 states have internal predecessors, (578), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:20:49,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 598 transitions. [2023-11-29 01:20:49,400 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 598 transitions. Word has length 62 [2023-11-29 01:20:49,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:49,401 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 598 transitions. [2023-11-29 01:20:49,401 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 01:20:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 598 transitions. [2023-11-29 01:20:49,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 01:20:49,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:49,405 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 01:20:49,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:20:49,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:49,611 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 01:20:49,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:49,611 INFO L85 PathProgramCache]: Analyzing trace with hash -663322667, now seen corresponding path program 1 times [2023-11-29 01:20:49,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:49,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900213070] [2023-11-29 01:20:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:49,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:49,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:49,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285370805] [2023-11-29 01:20:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:49,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:49,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:49,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:49,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:20:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:49,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:20:49,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:49,884 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 01:20:49,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:20:49,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:49,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900213070] [2023-11-29 01:20:49,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:49,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285370805] [2023-11-29 01:20:49,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285370805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:49,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:49,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:20:49,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879523769] [2023-11-29 01:20:49,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:49,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:20:49,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:49,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:20:49,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:20:49,887 INFO L87 Difference]: Start difference. First operand 419 states and 598 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 01:20:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:50,003 INFO L93 Difference]: Finished difference Result 818 states and 1175 transitions. [2023-11-29 01:20:50,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:20:50,003 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 01:20:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:50,006 INFO L225 Difference]: With dead ends: 818 [2023-11-29 01:20:50,006 INFO L226 Difference]: Without dead ends: 406 [2023-11-29 01:20:50,007 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 01:20:50,008 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 165 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:50,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1459 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:20:50,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-29 01:20:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 405. [2023-11-29 01:20:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 377 states have (on average 1.4774535809018567) internal successors, (557), 391 states have internal predecessors, (557), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-29 01:20:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 577 transitions. [2023-11-29 01:20:50,024 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 577 transitions. Word has length 62 [2023-11-29 01:20:50,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:50,025 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 577 transitions. [2023-11-29 01:20:50,025 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 01:20:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 577 transitions. [2023-11-29 01:20:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 01:20:50,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:50,027 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 01:20:50,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:20:50,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:50,229 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 01:20:50,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:50,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1479376121, now seen corresponding path program 1 times [2023-11-29 01:20:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:50,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685323810] [2023-11-29 01:20:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:50,269 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:50,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646457399] [2023-11-29 01:20:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:50,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:50,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:50,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:50,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:20:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:50,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:20:50,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:50,580 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 01:20:50,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:20:50,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:50,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685323810] [2023-11-29 01:20:50,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:50,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646457399] [2023-11-29 01:20:50,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646457399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:50,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:50,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:20:50,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127584205] [2023-11-29 01:20:50,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:50,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:20:50,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:50,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:20:50,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:20:50,583 INFO L87 Difference]: Start difference. First operand 405 states and 577 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 01:20:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:50,653 INFO L93 Difference]: Finished difference Result 785 states and 1130 transitions. [2023-11-29 01:20:50,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:20:50,654 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 01:20:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:50,660 INFO L225 Difference]: With dead ends: 785 [2023-11-29 01:20:50,660 INFO L226 Difference]: Without dead ends: 783 [2023-11-29 01:20:50,660 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 01:20:50,661 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 489 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:50,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1639 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:20:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-11-29 01:20:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 771. [2023-11-29 01:20:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 733 states have (on average 1.4829467939972716) internal successors, (1087), 748 states have internal predecessors, (1087), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (21), 16 states have call predecessors, (21), 18 states have call successors, (21) [2023-11-29 01:20:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1126 transitions. [2023-11-29 01:20:50,687 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1126 transitions. Word has length 62 [2023-11-29 01:20:50,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:50,688 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1126 transitions. [2023-11-29 01:20:50,688 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 01:20:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1126 transitions. [2023-11-29 01:20:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 01:20:50,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:50,691 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 01:20:50,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:20:50,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:50,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:20:50,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1383980546, now seen corresponding path program 1 times [2023-11-29 01:20:50,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:50,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338067269] [2023-11-29 01:20:50,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:50,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:50,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:50,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94993787] [2023-11-29 01:20:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:50,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:50,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:50,923 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:50,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:20:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:51,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:20:51,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:51,207 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 01:20:51,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:20:51,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:51,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338067269] [2023-11-29 01:20:51,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:51,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94993787] [2023-11-29 01:20:51,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94993787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:51,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:51,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:20:51,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016476178] [2023-11-29 01:20:51,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:51,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:20:51,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:51,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:20:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:20:51,210 INFO L87 Difference]: Start difference. First operand 771 states and 1126 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 01:20:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:51,293 INFO L93 Difference]: Finished difference Result 1279 states and 1879 transitions. [2023-11-29 01:20:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:20:51,294 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 01:20:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:51,302 INFO L225 Difference]: With dead ends: 1279 [2023-11-29 01:20:51,302 INFO L226 Difference]: Without dead ends: 1277 [2023-11-29 01:20:51,303 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 01:20:51,304 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 422 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:51,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1649 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:20:51,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-11-29 01:20:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1269. [2023-11-29 01:20:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1225 states have (on average 1.4922448979591836) internal successors, (1828), 1241 states have internal predecessors, (1828), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-29 01:20:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1877 transitions. [2023-11-29 01:20:51,352 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1877 transitions. Word has length 63 [2023-11-29 01:20:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:51,352 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1877 transitions. [2023-11-29 01:20:51,352 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 01:20:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1877 transitions. [2023-11-29 01:20:51,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 01:20:51,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:51,354 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] [2023-11-29 01:20:51,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:20:51,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:51,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:20:51,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:51,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1493724209, now seen corresponding path program 1 times [2023-11-29 01:20:51,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:51,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253403440] [2023-11-29 01:20:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:51,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:51,903 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 01:20:51,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:51,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253403440] [2023-11-29 01:20:51,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253403440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:51,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:51,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:20:51,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070913151] [2023-11-29 01:20:51,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:51,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:20:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:51,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:20:51,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:20:51,906 INFO L87 Difference]: Start difference. First operand 1269 states and 1877 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 01:20:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:52,100 INFO L93 Difference]: Finished difference Result 2361 states and 3509 transitions. [2023-11-29 01:20:52,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:20:52,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2023-11-29 01:20:52,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:52,112 INFO L225 Difference]: With dead ends: 2361 [2023-11-29 01:20:52,112 INFO L226 Difference]: Without dead ends: 2008 [2023-11-29 01:20:52,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:20:52,114 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 512 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:52,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1666 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:20:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2023-11-29 01:20:52,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 1269. [2023-11-29 01:20:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1225 states have (on average 1.4914285714285713) internal successors, (1827), 1241 states have internal predecessors, (1827), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-29 01:20:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1876 transitions. [2023-11-29 01:20:52,171 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1876 transitions. Word has length 69 [2023-11-29 01:20:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:52,171 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1876 transitions. [2023-11-29 01:20:52,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 01:20:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1876 transitions. [2023-11-29 01:20:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 01:20:52,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:52,173 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 01:20:52,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:20:52,173 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 01:20:52,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:52,174 INFO L85 PathProgramCache]: Analyzing trace with hash 602276963, now seen corresponding path program 1 times [2023-11-29 01:20:52,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:52,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769996290] [2023-11-29 01:20:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:52,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:52,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:52,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821264365] [2023-11-29 01:20:52,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:52,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:52,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:52,204 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:52,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:20:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:52,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:20:52,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:52,548 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 01:20:52,548 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:20:52,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:52,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769996290] [2023-11-29 01:20:52,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:52,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821264365] [2023-11-29 01:20:52,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821264365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:52,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:52,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:20:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104356184] [2023-11-29 01:20:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:52,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:20:52,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:20:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:20:52,551 INFO L87 Difference]: Start difference. First operand 1269 states and 1876 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 01:20:52,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:52,596 INFO L93 Difference]: Finished difference Result 1269 states and 1876 transitions. [2023-11-29 01:20:52,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:20:52,597 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 01:20:52,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:52,604 INFO L225 Difference]: With dead ends: 1269 [2023-11-29 01:20:52,604 INFO L226 Difference]: Without dead ends: 1268 [2023-11-29 01:20:52,605 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 01:20:52,606 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 492 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:52,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 553 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:20:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2023-11-29 01:20:52,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1268. [2023-11-29 01:20:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1225 states have (on average 1.489795918367347) internal successors, (1825), 1240 states have internal predecessors, (1825), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-29 01:20:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1874 transitions. [2023-11-29 01:20:52,679 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1874 transitions. Word has length 71 [2023-11-29 01:20:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:52,679 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1874 transitions. [2023-11-29 01:20:52,680 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 01:20:52,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1874 transitions. [2023-11-29 01:20:52,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 01:20:52,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:52,681 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 01:20:52,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:20:52,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:52,882 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 01:20:52,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:52,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1490716738, now seen corresponding path program 1 times [2023-11-29 01:20:52,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:52,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953784955] [2023-11-29 01:20:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:52,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:52,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:52,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857145646] [2023-11-29 01:20:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:52,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:52,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:52,915 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:52,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:20:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:53,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:20:53,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:53,291 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 01:20:53,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:20:53,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953784955] [2023-11-29 01:20:53,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857145646] [2023-11-29 01:20:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857145646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:53,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:53,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:20:53,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946381091] [2023-11-29 01:20:53,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:53,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:20:53,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:53,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:20:53,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:20:53,294 INFO L87 Difference]: Start difference. First operand 1268 states and 1874 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 01:20:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:53,360 INFO L93 Difference]: Finished difference Result 1295 states and 1894 transitions. [2023-11-29 01:20:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:20:53,360 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 01:20:53,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:53,369 INFO L225 Difference]: With dead ends: 1295 [2023-11-29 01:20:53,369 INFO L226 Difference]: Without dead ends: 1294 [2023-11-29 01:20:53,369 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 01:20:53,370 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 431 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:53,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1107 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:20:53,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2023-11-29 01:20:53,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1285. [2023-11-29 01:20:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1237 states have (on average 1.4858528698464026) internal successors, (1838), 1253 states have internal predecessors, (1838), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2023-11-29 01:20:53,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1893 transitions. [2023-11-29 01:20:53,427 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1893 transitions. Word has length 72 [2023-11-29 01:20:53,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:53,427 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1893 transitions. [2023-11-29 01:20:53,427 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 01:20:53,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1893 transitions. [2023-11-29 01:20:53,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 01:20:53,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:53,429 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 01:20:53,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:20:53,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:53,630 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 01:20:53,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:53,630 INFO L85 PathProgramCache]: Analyzing trace with hash -179740024, now seen corresponding path program 1 times [2023-11-29 01:20:53,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:53,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794035787] [2023-11-29 01:20:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:53,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:53,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:53,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493562494] [2023-11-29 01:20:53,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:53,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:53,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:53,669 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:53,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:20:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:53,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:20:53,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:54,083 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 01:20:54,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:20:54,294 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 01:20:54,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:54,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794035787] [2023-11-29 01:20:54,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:54,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493562494] [2023-11-29 01:20:54,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493562494] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:20:54,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:20:54,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-11-29 01:20:54,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717340235] [2023-11-29 01:20:54,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:20:54,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:20:54,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:54,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:20:54,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:20:54,298 INFO L87 Difference]: Start difference. First operand 1285 states and 1893 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 01:20:55,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:55,078 INFO L93 Difference]: Finished difference Result 3188 states and 4686 transitions. [2023-11-29 01:20:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:20:55,079 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 01:20:55,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:55,097 INFO L225 Difference]: With dead ends: 3188 [2023-11-29 01:20:55,097 INFO L226 Difference]: Without dead ends: 3186 [2023-11-29 01:20:55,099 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 01:20:55,100 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 2935 mSDsluCounter, 4820 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 5399 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:55,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2942 Valid, 5399 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:20:55,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2023-11-29 01:20:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 2936. [2023-11-29 01:20:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2838 states have (on average 1.4823819591261451) internal successors, (4207), 2856 states have internal predecessors, (4207), 65 states have call successors, (65), 26 states have call predecessors, (65), 20 states have return successors, (86), 54 states have call predecessors, (86), 65 states have call successors, (86) [2023-11-29 01:20:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 4358 transitions. [2023-11-29 01:20:55,220 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 4358 transitions. Word has length 79 [2023-11-29 01:20:55,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:55,221 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 4358 transitions. [2023-11-29 01:20:55,221 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 01:20:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 4358 transitions. [2023-11-29 01:20:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 01:20:55,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:55,222 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 01:20:55,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:20:55,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:55,423 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 01:20:55,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1135681678, now seen corresponding path program 1 times [2023-11-29 01:20:55,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782121581] [2023-11-29 01:20:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:55,464 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:55,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92353467] [2023-11-29 01:20:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:55,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:55,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:55,465 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:55,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:20:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:55,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:20:55,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:56,013 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 01:20:56,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:20:56,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:56,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782121581] [2023-11-29 01:20:56,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:56,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92353467] [2023-11-29 01:20:56,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92353467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:56,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:56,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:20:56,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940428955] [2023-11-29 01:20:56,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:56,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:20:56,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:56,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:20:56,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:20:56,016 INFO L87 Difference]: Start difference. First operand 2936 states and 4358 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 01:20:56,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:56,233 INFO L93 Difference]: Finished difference Result 6364 states and 9496 transitions. [2023-11-29 01:20:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:20:56,233 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 01:20:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:56,253 INFO L225 Difference]: With dead ends: 6364 [2023-11-29 01:20:56,253 INFO L226 Difference]: Without dead ends: 3435 [2023-11-29 01:20:56,258 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 01:20:56,259 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 345 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:56,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1243 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:20:56,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2023-11-29 01:20:56,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3412. [2023-11-29 01:20:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3320 states have (on average 1.4960843373493975) internal successors, (4967), 3337 states have internal predecessors, (4967), 60 states have call successors, (60), 24 states have call predecessors, (60), 19 states have return successors, (81), 51 states have call predecessors, (81), 60 states have call successors, (81) [2023-11-29 01:20:56,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5108 transitions. [2023-11-29 01:20:56,384 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5108 transitions. Word has length 80 [2023-11-29 01:20:56,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:56,385 INFO L495 AbstractCegarLoop]: Abstraction has 3412 states and 5108 transitions. [2023-11-29 01:20:56,385 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 01:20:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5108 transitions. [2023-11-29 01:20:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 01:20:56,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:56,386 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 01:20:56,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:20:56,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:20:56,587 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 01:20:56,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:56,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1254556124, now seen corresponding path program 1 times [2023-11-29 01:20:56,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:56,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120685101] [2023-11-29 01:20:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:56,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:56,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:56,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834933404] [2023-11-29 01:20:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:56,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:56,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:56,654 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:56,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:20:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:56,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:20:56,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:57,075 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 01:20:57,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:20:57,230 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 01:20:57,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:57,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120685101] [2023-11-29 01:20:57,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:57,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834933404] [2023-11-29 01:20:57,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834933404] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:20:57,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:20:57,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-29 01:20:57,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614921534] [2023-11-29 01:20:57,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:20:57,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:20:57,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:57,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:20:57,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:20:57,233 INFO L87 Difference]: Start difference. First operand 3412 states and 5108 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 01:20:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:57,739 INFO L93 Difference]: Finished difference Result 6168 states and 9214 transitions. [2023-11-29 01:20:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:20:57,739 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 01:20:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:57,773 INFO L225 Difference]: With dead ends: 6168 [2023-11-29 01:20:57,773 INFO L226 Difference]: Without dead ends: 6167 [2023-11-29 01:20:57,776 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 01:20:57,777 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 3222 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:57,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3231 Valid, 2611 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:20:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2023-11-29 01:20:57,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 5514. [2023-11-29 01:20:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 5358 states have (on average 1.492161254199328) internal successors, (7995), 5375 states have internal predecessors, (7995), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2023-11-29 01:20:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 8232 transitions. [2023-11-29 01:20:57,980 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 8232 transitions. Word has length 88 [2023-11-29 01:20:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:57,980 INFO L495 AbstractCegarLoop]: Abstraction has 5514 states and 8232 transitions. [2023-11-29 01:20:57,981 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 01:20:57,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 8232 transitions. [2023-11-29 01:20:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 01:20:57,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:57,982 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 01:20:57,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:20:58,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:20:58,183 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 01:20:58,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:58,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1920423258, now seen corresponding path program 1 times [2023-11-29 01:20:58,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:58,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939100873] [2023-11-29 01:20:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:58,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:58,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819970502] [2023-11-29 01:20:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:58,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:58,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:58,230 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:58,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:20:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:58,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:20:58,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:58,676 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 01:20:58,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:20:58,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:20:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939100873] [2023-11-29 01:20:58,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:20:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819970502] [2023-11-29 01:20:58,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819970502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:20:58,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:20:58,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:20:58,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013865932] [2023-11-29 01:20:58,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:20:58,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:20:58,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:20:58,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:20:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:20:58,679 INFO L87 Difference]: Start difference. First operand 5514 states and 8232 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 01:20:58,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:20:58,979 INFO L93 Difference]: Finished difference Result 10896 states and 16272 transitions. [2023-11-29 01:20:58,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:20:58,979 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 01:20:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:20:59,012 INFO L225 Difference]: With dead ends: 10896 [2023-11-29 01:20:59,012 INFO L226 Difference]: Without dead ends: 5514 [2023-11-29 01:20:59,021 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 01:20:59,022 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 142 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:20:59,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2627 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:20:59,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5514 states. [2023-11-29 01:20:59,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5514 to 5514. [2023-11-29 01:20:59,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 5358 states have (on average 1.4919746173945503) internal successors, (7994), 5374 states have internal predecessors, (7994), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2023-11-29 01:20:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 8231 transitions. [2023-11-29 01:20:59,203 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 8231 transitions. Word has length 112 [2023-11-29 01:20:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:20:59,203 INFO L495 AbstractCegarLoop]: Abstraction has 5514 states and 8231 transitions. [2023-11-29 01:20:59,204 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 01:20:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 8231 transitions. [2023-11-29 01:20:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 01:20:59,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:20:59,206 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 01:20:59,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:20:59,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:59,406 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 01:20:59,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:20:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2012946247, now seen corresponding path program 1 times [2023-11-29 01:20:59,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:20:59,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913143039] [2023-11-29 01:20:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:59,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:20:59,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:20:59,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870114614] [2023-11-29 01:20:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:20:59,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:20:59,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:20:59,456 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:20:59,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:20:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:20:59,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:20:59,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:20:59,839 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 01:21:00,080 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 01:21:00,087 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 01:21:00,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:21:00,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:00,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913143039] [2023-11-29 01:21:00,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:21:00,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870114614] [2023-11-29 01:21:00,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870114614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:00,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:00,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:21:00,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361676261] [2023-11-29 01:21:00,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:00,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:21:00,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:00,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:21:00,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:21:00,090 INFO L87 Difference]: Start difference. First operand 5514 states and 8231 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 01:21:04,236 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 01:21:08,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:21:12,409 WARN L539 Checker$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 01:21:16,444 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 01:21:16,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:16,537 INFO L93 Difference]: Finished difference Result 7388 states and 11026 transitions. [2023-11-29 01:21:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:21:16,538 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 01:21:16,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:16,555 INFO L225 Difference]: With dead ends: 7388 [2023-11-29 01:21:16,555 INFO L226 Difference]: Without dead ends: 7387 [2023-11-29 01:21:16,557 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 01:21:16,558 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 444 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:16,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1557 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 4 Unknown, 0 Unchecked, 16.3s Time] [2023-11-29 01:21:16,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7387 states. [2023-11-29 01:21:16,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7387 to 5315. [2023-11-29 01:21:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5315 states, 5150 states have (on average 1.4899029126213592) internal successors, (7673), 5170 states have internal predecessors, (7673), 109 states have call successors, (109), 56 states have call predecessors, (109), 44 states have return successors, (142), 88 states have call predecessors, (142), 109 states have call successors, (142) [2023-11-29 01:21:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 7924 transitions. [2023-11-29 01:21:16,718 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 7924 transitions. Word has length 117 [2023-11-29 01:21:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:16,719 INFO L495 AbstractCegarLoop]: Abstraction has 5315 states and 7924 transitions. [2023-11-29 01:21:16,719 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 01:21:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 7924 transitions. [2023-11-29 01:21:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 01:21:16,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:16,721 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 01:21:16,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 01:21:16,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:21:16,922 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 01:21:16,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash 2023176601, now seen corresponding path program 1 times [2023-11-29 01:21:16,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:16,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703353430] [2023-11-29 01:21:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:16,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:16,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:16,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984263106] [2023-11-29 01:21:16,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:16,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:16,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:16,960 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:16,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:21:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:17,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:21:17,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:17,584 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 01:21:17,594 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 01:21:17,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:21:17,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:17,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703353430] [2023-11-29 01:21:17,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:21:17,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984263106] [2023-11-29 01:21:17,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984263106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:17,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:17,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:21:17,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406850946] [2023-11-29 01:21:17,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:17,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:21:17,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:17,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:21:17,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:21:17,596 INFO L87 Difference]: Start difference. First operand 5315 states and 7924 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 01:21:18,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:18,095 INFO L93 Difference]: Finished difference Result 5584 states and 8287 transitions. [2023-11-29 01:21:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:21:18,095 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 01:21:18,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:18,109 INFO L225 Difference]: With dead ends: 5584 [2023-11-29 01:21:18,109 INFO L226 Difference]: Without dead ends: 5583 [2023-11-29 01:21:18,111 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 01:21:18,112 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 441 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:18,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 2067 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:21:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5583 states. [2023-11-29 01:21:18,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5583 to 5314. [2023-11-29 01:21:18,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5314 states, 5150 states have (on average 1.487766990291262) internal successors, (7662), 5169 states have internal predecessors, (7662), 109 states have call successors, (109), 56 states have call predecessors, (109), 44 states have return successors, (142), 88 states have call predecessors, (142), 109 states have call successors, (142) [2023-11-29 01:21:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5314 states to 5314 states and 7913 transitions. [2023-11-29 01:21:18,300 INFO L78 Accepts]: Start accepts. Automaton has 5314 states and 7913 transitions. Word has length 118 [2023-11-29 01:21:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:18,300 INFO L495 AbstractCegarLoop]: Abstraction has 5314 states and 7913 transitions. [2023-11-29 01:21:18,301 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 01:21:18,301 INFO L276 IsEmpty]: Start isEmpty. Operand 5314 states and 7913 transitions. [2023-11-29 01:21:18,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 01:21:18,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:18,303 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 01:21:18,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:21:18,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:21:18,503 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 01:21:18,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:18,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1632876603, now seen corresponding path program 1 times [2023-11-29 01:21:18,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:18,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453083594] [2023-11-29 01:21:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:18,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:18,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:18,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858852070] [2023-11-29 01:21:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:18,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:18,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:18,540 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:18,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:21:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:18,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:21:18,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:19,017 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 01:21:19,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:21:19,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:19,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453083594] [2023-11-29 01:21:19,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:21:19,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858852070] [2023-11-29 01:21:19,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858852070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:19,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:19,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:21:19,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37362928] [2023-11-29 01:21:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:19,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:21:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:21:19,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:21:19,020 INFO L87 Difference]: Start difference. First operand 5314 states and 7913 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 01:21:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:19,320 INFO L93 Difference]: Finished difference Result 9151 states and 13645 transitions. [2023-11-29 01:21:19,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:21:19,321 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 01:21:19,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:19,331 INFO L225 Difference]: With dead ends: 9151 [2023-11-29 01:21:19,331 INFO L226 Difference]: Without dead ends: 3958 [2023-11-29 01:21:19,338 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 01:21:19,339 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 23 mSDsluCounter, 3768 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4311 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:19,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4311 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:21:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2023-11-29 01:21:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3956. [2023-11-29 01:21:19,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3956 states, 3833 states have (on average 1.4925645708322464) internal successors, (5721), 3851 states have internal predecessors, (5721), 70 states have call successors, (70), 48 states have call predecessors, (70), 42 states have return successors, (82), 56 states have call predecessors, (82), 70 states have call successors, (82) [2023-11-29 01:21:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3956 states to 3956 states and 5873 transitions. [2023-11-29 01:21:19,483 INFO L78 Accepts]: Start accepts. Automaton has 3956 states and 5873 transitions. Word has length 123 [2023-11-29 01:21:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:19,483 INFO L495 AbstractCegarLoop]: Abstraction has 3956 states and 5873 transitions. [2023-11-29 01:21:19,483 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 01:21:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3956 states and 5873 transitions. [2023-11-29 01:21:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 01:21:19,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:19,485 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 01:21:19,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:21:19,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:21:19,686 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 01:21:19,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1197109681, now seen corresponding path program 1 times [2023-11-29 01:21:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:19,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864283372] [2023-11-29 01:21:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:19,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:19,726 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:19,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978604988] [2023-11-29 01:21:19,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:19,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:19,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:19,727 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:19,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:21:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:20,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 01:21:20,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:20,234 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 01:21:20,257 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 01:21:20,289 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 01:21:20,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:21:20,629 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 01:21:20,798 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 01:21:20,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:21:20,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:20,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864283372] [2023-11-29 01:21:20,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:21:20,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978604988] [2023-11-29 01:21:20,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978604988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:20,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:20,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 01:21:20,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583480807] [2023-11-29 01:21:20,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:20,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:21:20,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:20,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:21:20,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:21:20,801 INFO L87 Difference]: Start difference. First operand 3956 states and 5873 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 01:21:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:23,315 INFO L93 Difference]: Finished difference Result 8202 states and 12126 transitions. [2023-11-29 01:21:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:21:23,316 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 01:21:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:23,324 INFO L225 Difference]: With dead ends: 8202 [2023-11-29 01:21:23,324 INFO L226 Difference]: Without dead ends: 4329 [2023-11-29 01:21:23,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:21:23,329 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 763 mSDsluCounter, 3948 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 4445 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:23,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 4445 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 01:21:23,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2023-11-29 01:21:23,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 3988. [2023-11-29 01:21:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3865 states have (on average 1.4897800776196637) internal successors, (5758), 3883 states have internal predecessors, (5758), 70 states have call successors, (70), 48 states have call predecessors, (70), 42 states have return successors, (82), 56 states have call predecessors, (82), 70 states have call successors, (82) [2023-11-29 01:21:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 5910 transitions. [2023-11-29 01:21:23,420 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 5910 transitions. Word has length 125 [2023-11-29 01:21:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:23,420 INFO L495 AbstractCegarLoop]: Abstraction has 3988 states and 5910 transitions. [2023-11-29 01:21:23,420 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 01:21:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 5910 transitions. [2023-11-29 01:21:23,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 01:21:23,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:23,421 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 01:21:23,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 01:21:23,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:21:23,622 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 01:21:23,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:23,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2066816717, now seen corresponding path program 1 times [2023-11-29 01:21:23,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:23,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398594161] [2023-11-29 01:21:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:23,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:23,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:23,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747508046] [2023-11-29 01:21:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:23,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:23,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:23,685 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:23,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:21:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:24,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:21:24,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:24,106 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 01:21:24,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:21:24,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:24,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398594161] [2023-11-29 01:21:24,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:21:24,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747508046] [2023-11-29 01:21:24,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747508046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:24,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:24,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:21:24,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077979878] [2023-11-29 01:21:24,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:24,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:21:24,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:24,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:21:24,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:21:24,109 INFO L87 Difference]: Start difference. First operand 3988 states and 5910 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 01:21:24,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:24,319 INFO L93 Difference]: Finished difference Result 8611 states and 12825 transitions. [2023-11-29 01:21:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:21:24,320 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 01:21:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:24,331 INFO L225 Difference]: With dead ends: 8611 [2023-11-29 01:21:24,331 INFO L226 Difference]: Without dead ends: 4726 [2023-11-29 01:21:24,337 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 01:21:24,338 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 145 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:24,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1733 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:21:24,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2023-11-29 01:21:24,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4126. [2023-11-29 01:21:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4003 states have (on average 1.4751436422682989) internal successors, (5905), 4021 states have internal predecessors, (5905), 70 states have call successors, (70), 48 states have call predecessors, (70), 42 states have return successors, (82), 56 states have call predecessors, (82), 70 states have call successors, (82) [2023-11-29 01:21:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 6057 transitions. [2023-11-29 01:21:24,501 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 6057 transitions. Word has length 125 [2023-11-29 01:21:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:24,501 INFO L495 AbstractCegarLoop]: Abstraction has 4126 states and 6057 transitions. [2023-11-29 01:21:24,501 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 01:21:24,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 6057 transitions. [2023-11-29 01:21:24,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 01:21:24,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:24,502 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 01:21:24,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 01:21:24,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:21:24,703 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 01:21:24,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:24,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1019333063, now seen corresponding path program 1 times [2023-11-29 01:21:24,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:24,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243219317] [2023-11-29 01:21:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:24,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:24,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:21:24,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783629414] [2023-11-29 01:21:24,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:24,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:24,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:24,752 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:24,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:21:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:25,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 01:21:25,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:25,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:21:25,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 22 [2023-11-29 01:21:33,962 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:21:42,009 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:21:50,033 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:21:58,122 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:22:06,149 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:22:18,211 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:22:26,228 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:22:39,199 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:22:47,285 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:22:55,323 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:23:03,342 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:23:11,366 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:23:18,936 WARN L293 SmtUtils]: Spent 7.57s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:23:27,144 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:23:36,285 WARN L293 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:23:44,314 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:23:52,347 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:24:04,475 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:24:12,527 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (mod (+ (* 4294967295 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4276993779) 4294967296))) (let ((.cse0 (mod (+ 2690382803 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4294967296)) (.cse3 (* .cse6 256)) (.cse5 (* (- 1) |c_ULTIMATE.start_main_~_ha_hashv~0#1|))) (or (exists ((v_z_29 Int)) (and (exists ((v_y_26 Int) (v_y_29 Int)) (let ((.cse4 (* v_y_26 4294967296)) (.cse1 (* v_z_29 4294967295)) (.cse2 (* v_y_29 4294967296))) (and (= (+ .cse0 .cse1 .cse2) 4294967296) (= .cse3 (+ .cse4 (* v_z_29 4294967039) .cse2)) (<= (+ .cse4 |c_ULTIMATE.start_main_~_ha_hashv~0#1| .cse1 .cse2) 8553987558) (<= (div (+ (div (+ (- 255) (div (+ 8553987302 (* v_z_29 (- 4294967295)) .cse5) 256)) 256) (- 255)) 256) (+ 254 (* v_y_26 256) (* v_y_29 256)))))) (<= 0 v_z_29) (<= (+ .cse6 v_z_29) 4294967295))) (exists ((v_z_29 Int)) (and (exists ((v_y_26 Int) (v_y_29 Int)) (let ((.cse7 (* v_z_29 4294967295)) (.cse9 (* v_y_26 4294967296)) (.cse8 (* v_y_29 4294967296))) (and (= (+ .cse0 .cse7 .cse8) 4294967296) (<= (+ .cse9 |c_ULTIMATE.start_main_~_ha_hashv~0#1| .cse7 .cse8) 8553987558) (= .cse3 (+ 1099511627776 .cse9 (* v_z_29 4294967039) .cse8)) (<= (div (+ (div (+ (- 255) (div (+ 8553987302 (* v_z_29 (- 4294967295)) .cse5) 256)) 256) (- 255)) 256) (+ 254 (* v_y_26 256) (* v_y_29 256)))))) (<= 4294967296 (+ .cse6 v_z_29)) (<= v_z_29 4294967295)))))) is different from false [2023-11-29 01:24:16,747 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 01:24:16,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:16,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:16,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243219317] [2023-11-29 01:24:16,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:16,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783629414] [2023-11-29 01:24:16,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783629414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:16,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:24:16,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 01:24:16,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656175637] [2023-11-29 01:24:16,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:16,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:24:16,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:16,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:24:16,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=108, Unknown=1, NotChecked=20, Total=156 [2023-11-29 01:24:16,750 INFO L87 Difference]: Start difference. First operand 4126 states and 6057 transitions. Second operand has 13 states, 13 states have (on average 8.23076923076923) 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 01:24:19,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:19,465 INFO L93 Difference]: Finished difference Result 8303 states and 12196 transitions. [2023-11-29 01:24:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:24:19,466 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.23076923076923) 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 01:24:19,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:19,476 INFO L225 Difference]: With dead ends: 8303 [2023-11-29 01:24:19,476 INFO L226 Difference]: Without dead ends: 4292 [2023-11-29 01:24:19,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=39, Invalid=174, Unknown=1, NotChecked=26, Total=240 [2023-11-29 01:24:19,482 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 21 mSDsluCounter, 4477 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 5016 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:19,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 5016 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1707 Invalid, 0 Unknown, 162 Unchecked, 2.4s Time] [2023-11-29 01:24:19,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2023-11-29 01:24:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4257. [2023-11-29 01:24:19,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4257 states, 4134 states have (on average 1.4649250120948234) internal successors, (6056), 4152 states have internal predecessors, (6056), 70 states have call successors, (70), 48 states have call predecessors, (70), 42 states have return successors, (82), 56 states have call predecessors, (82), 70 states have call successors, (82) [2023-11-29 01:24:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4257 states to 4257 states and 6208 transitions. [2023-11-29 01:24:19,629 INFO L78 Accepts]: Start accepts. Automaton has 4257 states and 6208 transitions. Word has length 126 [2023-11-29 01:24:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:19,629 INFO L495 AbstractCegarLoop]: Abstraction has 4257 states and 6208 transitions. [2023-11-29 01:24:19,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) 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 01:24:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 4257 states and 6208 transitions. [2023-11-29 01:24:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 01:24:19,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:19,631 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 01:24:19,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:24:19,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:19,832 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 01:24:19,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2077979210, now seen corresponding path program 1 times [2023-11-29 01:24:19,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:19,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618123510] [2023-11-29 01:24:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:19,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:19,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:19,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139917670] [2023-11-29 01:24:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:19,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:19,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:19,881 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:19,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:24:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:20,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:24:20,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:20,490 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 01:24:20,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:20,674 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 01:24:20,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:20,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618123510] [2023-11-29 01:24:20,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:20,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139917670] [2023-11-29 01:24:20,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139917670] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:20,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:24:20,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2023-11-29 01:24:20,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499286812] [2023-11-29 01:24:20,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:20,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 01:24:20,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:20,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 01:24:20,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:24:20,678 INFO L87 Difference]: Start difference. First operand 4257 states and 6208 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 01:24:21,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:21,207 INFO L93 Difference]: Finished difference Result 8408 states and 12302 transitions. [2023-11-29 01:24:21,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:24:21,208 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 01:24:21,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:21,217 INFO L225 Difference]: With dead ends: 8408 [2023-11-29 01:24:21,217 INFO L226 Difference]: Without dead ends: 4329 [2023-11-29 01:24:21,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:24:21,224 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 39 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4858 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:21,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4858 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:24:21,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2023-11-29 01:24:21,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 4312. [2023-11-29 01:24:21,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4187 states have (on average 1.4657272510150465) internal successors, (6137), 4201 states have internal predecessors, (6137), 70 states have call successors, (70), 54 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:24:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 6285 transitions. [2023-11-29 01:24:21,399 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 6285 transitions. Word has length 127 [2023-11-29 01:24:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:21,400 INFO L495 AbstractCegarLoop]: Abstraction has 4312 states and 6285 transitions. [2023-11-29 01:24:21,400 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 01:24:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 6285 transitions. [2023-11-29 01:24:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 01:24:21,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:21,401 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 01:24:21,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:24:21,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:21,603 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 01:24:21,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2017074178, now seen corresponding path program 2 times [2023-11-29 01:24:21,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:21,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412338591] [2023-11-29 01:24:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:21,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:21,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:21,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620846067] [2023-11-29 01:24:21,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:24:21,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:21,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:21,668 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:21,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:24:21,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:24:21,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:21,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:24:21,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:21,996 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 01:24:22,000 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 01:24:22,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:22,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:22,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412338591] [2023-11-29 01:24:22,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:22,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620846067] [2023-11-29 01:24:22,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620846067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:22,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:24:22,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:24:22,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759275552] [2023-11-29 01:24:22,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:22,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:24:22,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:24:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:24:22,002 INFO L87 Difference]: Start difference. First operand 4312 states and 6285 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 01:24:22,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:22,104 INFO L93 Difference]: Finished difference Result 4312 states and 6285 transitions. [2023-11-29 01:24:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:24:22,105 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 01:24:22,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:22,111 INFO L225 Difference]: With dead ends: 4312 [2023-11-29 01:24:22,112 INFO L226 Difference]: Without dead ends: 4311 [2023-11-29 01:24:22,113 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 01:24:22,113 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 2 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:22,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1099 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:24:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2023-11-29 01:24:22,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 4311. [2023-11-29 01:24:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4311 states, 4187 states have (on average 1.4642942440888465) internal successors, (6131), 4200 states have internal predecessors, (6131), 70 states have call successors, (70), 54 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:24:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 6279 transitions. [2023-11-29 01:24:22,284 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 6279 transitions. Word has length 131 [2023-11-29 01:24:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:22,284 INFO L495 AbstractCegarLoop]: Abstraction has 4311 states and 6279 transitions. [2023-11-29 01:24:22,284 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 01:24:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 6279 transitions. [2023-11-29 01:24:22,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 01:24:22,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:22,286 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 01:24:22,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:24:22,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:24:22,486 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 01:24:22,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1895210025, now seen corresponding path program 1 times [2023-11-29 01:24:22,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:22,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782187753] [2023-11-29 01:24:22,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:22,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:22,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:22,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126632412] [2023-11-29 01:24:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:22,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:22,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:22,534 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:22,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:24:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:23,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 01:24:23,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:23,153 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 01:24:23,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:23,513 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 01:24:23,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:23,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782187753] [2023-11-29 01:24:23,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:23,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126632412] [2023-11-29 01:24:23,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126632412] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:23,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:24:23,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2023-11-29 01:24:23,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143941735] [2023-11-29 01:24:23,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:23,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 01:24:23,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:23,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 01:24:23,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:24:23,516 INFO L87 Difference]: Start difference. First operand 4311 states and 6279 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 01:24:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:24,936 INFO L93 Difference]: Finished difference Result 8159 states and 11927 transitions. [2023-11-29 01:24:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 01:24:24,936 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 01:24:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:24,964 INFO L225 Difference]: With dead ends: 8159 [2023-11-29 01:24:24,964 INFO L226 Difference]: Without dead ends: 3883 [2023-11-29 01:24:24,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 01:24:24,969 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 155 mSDsluCounter, 5427 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 5890 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:24,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 5890 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:24:24,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2023-11-29 01:24:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3860. [2023-11-29 01:24:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3860 states, 3736 states have (on average 1.4544967880085653) internal successors, (5434), 3749 states have internal predecessors, (5434), 70 states have call successors, (70), 54 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:24:25,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 5582 transitions. [2023-11-29 01:24:25,077 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 5582 transitions. Word has length 132 [2023-11-29 01:24:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:25,078 INFO L495 AbstractCegarLoop]: Abstraction has 3860 states and 5582 transitions. [2023-11-29 01:24:25,078 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 01:24:25,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 5582 transitions. [2023-11-29 01:24:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-29 01:24:25,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:25,079 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 01:24:25,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:24:25,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:25,280 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 01:24:25,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:25,280 INFO L85 PathProgramCache]: Analyzing trace with hash 728024488, now seen corresponding path program 2 times [2023-11-29 01:24:25,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:25,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542551231] [2023-11-29 01:24:25,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:25,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:25,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:25,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542619841] [2023-11-29 01:24:25,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:24:25,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:25,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:25,336 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:25,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:24:26,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:24:26,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:26,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 01:24:26,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 6 proven. 124 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 01:24:26,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:26,833 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 01:24:26,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:26,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542551231] [2023-11-29 01:24:26,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:26,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542619841] [2023-11-29 01:24:26,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542619841] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:26,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:24:26,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 24 [2023-11-29 01:24:26,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195156256] [2023-11-29 01:24:26,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:26,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:24:26,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:24:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:24:26,836 INFO L87 Difference]: Start difference. First operand 3860 states and 5582 transitions. Second operand has 24 states, 22 states have (on average 6.409090909090909) internal successors, (141), 24 states have internal predecessors, (141), 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 01:24:29,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:29,260 INFO L93 Difference]: Finished difference Result 7676 states and 11176 transitions. [2023-11-29 01:24:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 01:24:29,261 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 6.409090909090909) internal successors, (141), 24 states have internal predecessors, (141), 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 01:24:29,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:29,267 INFO L225 Difference]: With dead ends: 7676 [2023-11-29 01:24:29,267 INFO L226 Difference]: Without dead ends: 3956 [2023-11-29 01:24:29,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=555, Invalid=2307, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 01:24:29,273 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 184 mSDsluCounter, 6797 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 7259 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:29,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 7259 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:24:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2023-11-29 01:24:29,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3906. [2023-11-29 01:24:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3906 states, 3782 states have (on average 1.4479111581173982) internal successors, (5476), 3793 states have internal predecessors, (5476), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:24:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3906 states to 3906 states and 5624 transitions. [2023-11-29 01:24:29,433 INFO L78 Accepts]: Start accepts. Automaton has 3906 states and 5624 transitions. Word has length 141 [2023-11-29 01:24:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:29,433 INFO L495 AbstractCegarLoop]: Abstraction has 3906 states and 5624 transitions. [2023-11-29 01:24:29,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 6.409090909090909) internal successors, (141), 24 states have internal predecessors, (141), 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 01:24:29,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3906 states and 5624 transitions. [2023-11-29 01:24:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 01:24:29,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:29,435 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 01:24:29,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 01:24:29,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:29,635 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 01:24:29,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2039574441, now seen corresponding path program 3 times [2023-11-29 01:24:29,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:29,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821918147] [2023-11-29 01:24:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:29,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:29,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:29,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179773927] [2023-11-29 01:24:29,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:24:29,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:29,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:29,695 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:29,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:24:31,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:24:31,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:31,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:24:31,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:58,721 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_y_34 Int) (v_z_34 Int) (v_y_32 Int)) (let ((.cse0 (* v_y_34 4294967296))) (and (= (+ (mod (+ 2690382803 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4294967296) (* v_z_34 4294967295) .cse0) 4294967296) (<= v_z_34 4294967295) (= (+ (* v_z_34 4294967039) 1099511627776 (* v_y_32 4294967296) .cse0) (* (mod (+ (* 4294967295 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4276993779) 4294967296) 256)) (<= 0 v_z_34)))) is different from false [2023-11-29 01:24:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-29 01:24:58,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:24:58,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:58,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821918147] [2023-11-29 01:24:58,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:58,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179773927] [2023-11-29 01:24:58,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179773927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:24:58,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:24:58,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:24:58,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435227957] [2023-11-29 01:24:58,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:24:58,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:24:58,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:58,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:24:58,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2023-11-29 01:24:58,741 INFO L87 Difference]: Start difference. First operand 3906 states and 5624 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 01:24:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:59,177 INFO L93 Difference]: Finished difference Result 7765 states and 11199 transitions. [2023-11-29 01:24:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:24:59,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 148 [2023-11-29 01:24:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:59,196 INFO L225 Difference]: With dead ends: 7765 [2023-11-29 01:24:59,197 INFO L226 Difference]: Without dead ends: 3920 [2023-11-29 01:24:59,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2023-11-29 01:24:59,202 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 12 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:59,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2501 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 319 Invalid, 0 Unknown, 95 Unchecked, 0.3s Time] [2023-11-29 01:24:59,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2023-11-29 01:24:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 3892. [2023-11-29 01:24:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3892 states, 3768 states have (on average 1.4477176220806793) internal successors, (5455), 3779 states have internal predecessors, (5455), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:24:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3892 states to 3892 states and 5603 transitions. [2023-11-29 01:24:59,344 INFO L78 Accepts]: Start accepts. Automaton has 3892 states and 5603 transitions. Word has length 148 [2023-11-29 01:24:59,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:59,344 INFO L495 AbstractCegarLoop]: Abstraction has 3892 states and 5603 transitions. [2023-11-29 01:24:59,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 01:24:59,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3892 states and 5603 transitions. [2023-11-29 01:24:59,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-29 01:24:59,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:59,346 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] [2023-11-29 01:24:59,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 01:24:59,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 01:24:59,547 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:24:59,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:59,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2073442947, now seen corresponding path program 1 times [2023-11-29 01:24:59,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:59,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511622435] [2023-11-29 01:24:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:59,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:59,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:59,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055895773] [2023-11-29 01:24:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:59,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:59,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:59,601 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:59,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:25:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:00,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:25:00,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-29 01:25:00,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:00,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:00,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511622435] [2023-11-29 01:25:00,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:25:00,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055895773] [2023-11-29 01:25:00,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055895773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:00,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:25:00,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:25:00,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638484415] [2023-11-29 01:25:00,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:00,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:25:00,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:00,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:25:00,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:25:00,339 INFO L87 Difference]: Start difference. First operand 3892 states and 5603 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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 01:25:00,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:25:00,660 INFO L93 Difference]: Finished difference Result 7766 states and 11204 transitions. [2023-11-29 01:25:00,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:25:00,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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 149 [2023-11-29 01:25:00,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:25:00,665 INFO L225 Difference]: With dead ends: 7766 [2023-11-29 01:25:00,665 INFO L226 Difference]: Without dead ends: 3927 [2023-11-29 01:25:00,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 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 01:25:00,669 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 10 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:25:00,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1750 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:25:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2023-11-29 01:25:00,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3920. [2023-11-29 01:25:00,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3920 states, 3796 states have (on average 1.446259220231823) internal successors, (5490), 3807 states have internal predecessors, (5490), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:25:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 5638 transitions. [2023-11-29 01:25:00,856 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 5638 transitions. Word has length 149 [2023-11-29 01:25:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:25:00,856 INFO L495 AbstractCegarLoop]: Abstraction has 3920 states and 5638 transitions. [2023-11-29 01:25:00,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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 01:25:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 5638 transitions. [2023-11-29 01:25:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-29 01:25:00,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:25:00,858 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] [2023-11-29 01:25:00,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 01:25:01,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 01:25:01,059 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:25:01,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:01,059 INFO L85 PathProgramCache]: Analyzing trace with hash 18983314, now seen corresponding path program 1 times [2023-11-29 01:25:01,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:01,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580114319] [2023-11-29 01:25:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:01,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:01,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:25:01,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700008072] [2023-11-29 01:25:01,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:01,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:01,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:01,139 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:01,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:25:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:01,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:25:01,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-29 01:25:01,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:01,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:01,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580114319] [2023-11-29 01:25:01,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:25:01,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700008072] [2023-11-29 01:25:01,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700008072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:01,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:25:01,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:25:01,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627241273] [2023-11-29 01:25:01,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:01,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:25:01,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:25:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:25:01,896 INFO L87 Difference]: Start difference. First operand 3920 states and 5638 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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 01:25:02,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:25:02,322 INFO L93 Difference]: Finished difference Result 7812 states and 11260 transitions. [2023-11-29 01:25:02,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:25:02,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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 149 [2023-11-29 01:25:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:25:02,328 INFO L225 Difference]: With dead ends: 7812 [2023-11-29 01:25:02,328 INFO L226 Difference]: Without dead ends: 3955 [2023-11-29 01:25:02,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 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 01:25:02,332 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 15 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:25:02,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2532 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:25:02,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2023-11-29 01:25:02,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3948. [2023-11-29 01:25:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 3824 states have (on average 1.4448221757322175) internal successors, (5525), 3835 states have internal predecessors, (5525), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:25:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5673 transitions. [2023-11-29 01:25:02,470 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5673 transitions. Word has length 149 [2023-11-29 01:25:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:25:02,470 INFO L495 AbstractCegarLoop]: Abstraction has 3948 states and 5673 transitions. [2023-11-29 01:25:02,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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 01:25:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5673 transitions. [2023-11-29 01:25:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-29 01:25:02,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:25:02,472 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] [2023-11-29 01:25:02,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 01:25:02,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 01:25:02,682 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:25:02,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:02,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1602086597, now seen corresponding path program 1 times [2023-11-29 01:25:02,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:02,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197554999] [2023-11-29 01:25:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:02,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:02,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:25:02,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94312536] [2023-11-29 01:25:02,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:02,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:02,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:02,744 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:02,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:25:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:03,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:25:03,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-29 01:25:03,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:25:03,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:03,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197554999] [2023-11-29 01:25:03,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:25:03,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94312536] [2023-11-29 01:25:03,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94312536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:25:03,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:25:03,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:25:03,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193443850] [2023-11-29 01:25:03,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:25:03,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:25:03,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:03,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:25:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:25:03,463 INFO L87 Difference]: Start difference. First operand 3948 states and 5673 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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 01:25:03,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:25:03,923 INFO L93 Difference]: Finished difference Result 7860 states and 11318 transitions. [2023-11-29 01:25:03,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:25:03,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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 149 [2023-11-29 01:25:03,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:25:03,929 INFO L225 Difference]: With dead ends: 7860 [2023-11-29 01:25:03,929 INFO L226 Difference]: Without dead ends: 3983 [2023-11-29 01:25:03,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 143 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 01:25:03,933 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 45 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:25:03,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2538 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:25:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2023-11-29 01:25:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3962. [2023-11-29 01:25:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3838 states have (on average 1.4431995831162063) internal successors, (5539), 3849 states have internal predecessors, (5539), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:25:04,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 5687 transitions. [2023-11-29 01:25:04,064 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 5687 transitions. Word has length 149 [2023-11-29 01:25:04,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:25:04,064 INFO L495 AbstractCegarLoop]: Abstraction has 3962 states and 5687 transitions. [2023-11-29 01:25:04,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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 01:25:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 5687 transitions. [2023-11-29 01:25:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 01:25:04,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:25:04,065 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] [2023-11-29 01:25:04,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 01:25:04,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 01:25:04,267 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:25:04,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:04,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1358521842, now seen corresponding path program 1 times [2023-11-29 01:25:04,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:04,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945112155] [2023-11-29 01:25:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:04,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:04,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:25:04,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515517425] [2023-11-29 01:25:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:04,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:04,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:04,385 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:04,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 01:25:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:25:05,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-29 01:25:05,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 159 proven. 55 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-29 01:25:06,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 6 proven. 201 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-29 01:25:06,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:06,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945112155] [2023-11-29 01:25:06,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:25:06,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515517425] [2023-11-29 01:25:06,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515517425] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:25:06,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:25:06,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2023-11-29 01:25:06,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802545773] [2023-11-29 01:25:06,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:25:06,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 01:25:06,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:06,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 01:25:06,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:25:06,777 INFO L87 Difference]: Start difference. First operand 3962 states and 5687 transitions. Second operand has 32 states, 30 states have (on average 5.233333333333333) internal successors, (157), 32 states have internal predecessors, (157), 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 01:25:26,414 WARN L293 SmtUtils]: Spent 17.65s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:25:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:25:43,095 INFO L93 Difference]: Finished difference Result 7947 states and 11499 transitions. [2023-11-29 01:25:43,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 01:25:43,095 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 5.233333333333333) internal successors, (157), 32 states have internal predecessors, (157), 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 150 [2023-11-29 01:25:43,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:25:43,100 INFO L225 Difference]: With dead ends: 7947 [2023-11-29 01:25:43,100 INFO L226 Difference]: Without dead ends: 4099 [2023-11-29 01:25:43,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=1064, Invalid=3628, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 01:25:43,105 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 123 mSDsluCounter, 7542 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 8017 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:25:43,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 8017 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:25:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2023-11-29 01:25:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 4058. [2023-11-29 01:25:43,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4058 states, 3934 states have (on average 1.4323843416370108) internal successors, (5635), 3945 states have internal predecessors, (5635), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:25:43,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 5783 transitions. [2023-11-29 01:25:43,296 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 5783 transitions. Word has length 150 [2023-11-29 01:25:43,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:25:43,296 INFO L495 AbstractCegarLoop]: Abstraction has 4058 states and 5783 transitions. [2023-11-29 01:25:43,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 5.233333333333333) internal successors, (157), 32 states have internal predecessors, (157), 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 01:25:43,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 5783 transitions. [2023-11-29 01:25:43,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 01:25:43,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:25:43,297 INFO L195 NwaCegarLoop]: trace histogram [34, 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] [2023-11-29 01:25:43,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 01:25:43,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:25:43,498 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:25:43,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash -654669106, now seen corresponding path program 2 times [2023-11-29 01:25:43,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:43,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126993665] [2023-11-29 01:25:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:43,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:43,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:25:43,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666247380] [2023-11-29 01:25:43,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:25:43,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:43,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:43,562 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:43,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 01:25:46,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:25:46,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:25:46,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-29 01:25:46,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 15 proven. 576 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-29 01:25:46,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 308 proven. 78 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-29 01:25:47,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:47,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126993665] [2023-11-29 01:25:47,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:25:47,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666247380] [2023-11-29 01:25:47,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666247380] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:25:47,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:25:47,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 17] total 46 [2023-11-29 01:25:47,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927063402] [2023-11-29 01:25:47,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:25:47,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 01:25:47,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:47,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 01:25:47,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=1656, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 01:25:47,861 INFO L87 Difference]: Start difference. First operand 4058 states and 5783 transitions. Second operand has 46 states, 44 states have (on average 3.727272727272727) internal successors, (164), 46 states have internal predecessors, (164), 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 01:26:34,883 WARN L293 SmtUtils]: Spent 43.17s on a formula simplification. DAG size of input: 85 DAG size of output: 77 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:26:59,638 WARN L293 SmtUtils]: Spent 22.56s on a formula simplification. DAG size of input: 78 DAG size of output: 72 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:27:08,336 WARN L293 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 71 DAG size of output: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:27:17,027 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 64 DAG size of output: 62 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:27:24,801 WARN L293 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:27:32,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:32,500 INFO L93 Difference]: Finished difference Result 8116 states and 11692 transitions. [2023-11-29 01:27:32,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-29 01:27:32,501 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 3.727272727272727) internal successors, (164), 46 states have internal predecessors, (164), 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 162 [2023-11-29 01:27:32,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:32,506 INFO L225 Difference]: With dead ends: 8116 [2023-11-29 01:27:32,506 INFO L226 Difference]: Without dead ends: 4225 [2023-11-29 01:27:32,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2666 ImplicationChecksByTransitivity, 103.0s TimeCoverageRelationStatistics Valid=1975, Invalid=8945, Unknown=0, NotChecked=0, Total=10920 [2023-11-29 01:27:32,511 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 179 mSDsluCounter, 9427 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 9901 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:32,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 9901 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 01:27:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2023-11-29 01:27:32,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 4128. [2023-11-29 01:27:32,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4128 states, 4004 states have (on average 1.4318181818181819) internal successors, (5733), 4015 states have internal predecessors, (5733), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:27:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 5881 transitions. [2023-11-29 01:27:32,721 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 5881 transitions. Word has length 162 [2023-11-29 01:27:32,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:32,721 INFO L495 AbstractCegarLoop]: Abstraction has 4128 states and 5881 transitions. [2023-11-29 01:27:32,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 3.727272727272727) internal successors, (164), 46 states have internal predecessors, (164), 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 01:27:32,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 5881 transitions. [2023-11-29 01:27:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-29 01:27:32,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:32,722 INFO L195 NwaCegarLoop]: trace histogram [48, 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] [2023-11-29 01:27:32,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 01:27:32,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:27:32,923 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:27:32,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:32,923 INFO L85 PathProgramCache]: Analyzing trace with hash 96304430, now seen corresponding path program 3 times [2023-11-29 01:27:32,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:32,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490178141] [2023-11-29 01:27:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:32,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:32,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:32,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492942017] [2023-11-29 01:27:32,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:27:32,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:32,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:32,983 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:32,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 01:27:33,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:27:33,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:27:33,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:27:33,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:33,611 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 01:27:33,964 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 01:27:34,000 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 01:27:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1235 trivial. 0 not checked. [2023-11-29 01:27:34,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:27:34,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:34,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490178141] [2023-11-29 01:27:34,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:27:34,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492942017] [2023-11-29 01:27:34,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492942017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:27:34,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:27:34,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-29 01:27:34,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588820689] [2023-11-29 01:27:34,417 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:27:34,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:27:34,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:34,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:27:34,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:27:34,419 INFO L87 Difference]: Start difference. First operand 4128 states and 5881 transitions. Second operand has 9 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 01:27:38,670 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 01:27:42,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:27:46,983 WARN L539 Checker$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 01:27:51,019 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 01:27:51,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:51,105 INFO L93 Difference]: Finished difference Result 4462 states and 6329 transitions. [2023-11-29 01:27:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:27:51,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 176 [2023-11-29 01:27:51,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:51,111 INFO L225 Difference]: With dead ends: 4462 [2023-11-29 01:27:51,111 INFO L226 Difference]: Without dead ends: 4461 [2023-11-29 01:27:51,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 185 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 01:27:51,113 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 729 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:51,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 2961 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 266 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2023-11-29 01:27:51,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2023-11-29 01:27:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 4127. [2023-11-29 01:27:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4127 states, 4004 states have (on average 1.4303196803196803) internal successors, (5727), 4014 states have internal predecessors, (5727), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:27:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4127 states to 4127 states and 5875 transitions. [2023-11-29 01:27:51,364 INFO L78 Accepts]: Start accepts. Automaton has 4127 states and 5875 transitions. Word has length 176 [2023-11-29 01:27:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:51,365 INFO L495 AbstractCegarLoop]: Abstraction has 4127 states and 5875 transitions. [2023-11-29 01:27:51,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 01:27:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4127 states and 5875 transitions. [2023-11-29 01:27:51,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-29 01:27:51,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:51,366 INFO L195 NwaCegarLoop]: trace histogram [48, 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] [2023-11-29 01:27:51,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 01:27:51,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:51,567 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:27:51,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:51,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1730639453, now seen corresponding path program 1 times [2023-11-29 01:27:51,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:51,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512841027] [2023-11-29 01:27:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:51,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:51,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:51,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419296902] [2023-11-29 01:27:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:51,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:51,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:51,659 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:51,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 01:27:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:52,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:27:52,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-29 01:27:52,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:52,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:52,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512841027] [2023-11-29 01:27:52,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:27:52,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419296902] [2023-11-29 01:27:52,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419296902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:52,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:27:52,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:27:52,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618913755] [2023-11-29 01:27:52,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:52,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:27:52,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:52,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:27:52,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:27:52,669 INFO L87 Difference]: Start difference. First operand 4127 states and 5875 transitions. Second operand has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 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 01:27:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:52,916 INFO L93 Difference]: Finished difference Result 4127 states and 5875 transitions. [2023-11-29 01:27:52,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:27:52,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 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 238 [2023-11-29 01:27:52,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:52,922 INFO L225 Difference]: With dead ends: 4127 [2023-11-29 01:27:52,922 INFO L226 Difference]: Without dead ends: 4126 [2023-11-29 01:27:52,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 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 01:27:52,924 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:52,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 481 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:27:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2023-11-29 01:27:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 4126. [2023-11-29 01:27:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4004 states have (on average 1.4275724275724275) internal successors, (5716), 4013 states have internal predecessors, (5716), 70 states have call successors, (70), 56 states have call predecessors, (70), 44 states have return successors, (78), 56 states have call predecessors, (78), 70 states have call successors, (78) [2023-11-29 01:27:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5864 transitions. [2023-11-29 01:27:53,176 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5864 transitions. Word has length 238 [2023-11-29 01:27:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:53,177 INFO L495 AbstractCegarLoop]: Abstraction has 4126 states and 5864 transitions. [2023-11-29 01:27:53,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 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 01:27:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5864 transitions. [2023-11-29 01:27:53,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-29 01:27:53,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:53,179 INFO L195 NwaCegarLoop]: trace histogram [48, 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] [2023-11-29 01:27:53,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-29 01:27:53,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:53,380 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:27:53,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2110216845, now seen corresponding path program 1 times [2023-11-29 01:27:53,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:53,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681373756] [2023-11-29 01:27:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:53,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:53,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:53,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974208358] [2023-11-29 01:27:53,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:53,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:53,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:53,446 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:53,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 01:27:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:54,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 1670 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:27:54,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-29 01:27:54,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:54,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:54,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681373756] [2023-11-29 01:27:54,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:27:54,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974208358] [2023-11-29 01:27:54,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974208358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:54,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:27:54,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 01:27:54,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56774624] [2023-11-29 01:27:54,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:54,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:27:54,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:54,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:27:54,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:27:54,516 INFO L87 Difference]: Start difference. First operand 4126 states and 5864 transitions. Second operand has 3 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 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 01:27:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:54,797 INFO L93 Difference]: Finished difference Result 5864 states and 8484 transitions. [2023-11-29 01:27:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:27:54,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 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 239 [2023-11-29 01:27:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:54,805 INFO L225 Difference]: With dead ends: 5864 [2023-11-29 01:27:54,805 INFO L226 Difference]: Without dead ends: 5863 [2023-11-29 01:27:54,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 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 01:27:54,806 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 304 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:54,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 745 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:27:54,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5863 states. [2023-11-29 01:27:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5863 to 5721. [2023-11-29 01:27:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5721 states, 5585 states have (on average 1.4535362578334825) internal successors, (8118), 5594 states have internal predecessors, (8118), 80 states have call successors, (80), 63 states have call predecessors, (80), 48 states have return successors, (88), 63 states have call predecessors, (88), 80 states have call successors, (88) [2023-11-29 01:27:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 8286 transitions. [2023-11-29 01:27:55,086 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 8286 transitions. Word has length 239 [2023-11-29 01:27:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:55,086 INFO L495 AbstractCegarLoop]: Abstraction has 5721 states and 8286 transitions. [2023-11-29 01:27:55,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 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 01:27:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 8286 transitions. [2023-11-29 01:27:55,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-29 01:27:55,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:55,088 INFO L195 NwaCegarLoop]: trace histogram [48, 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 01:27:55,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 01:27:55,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:55,289 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:27:55,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:55,289 INFO L85 PathProgramCache]: Analyzing trace with hash 733550785, now seen corresponding path program 1 times [2023-11-29 01:27:55,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:55,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129897512] [2023-11-29 01:27:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:55,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:55,368 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:55,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407995520] [2023-11-29 01:27:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:55,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:55,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:55,369 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:55,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 01:27:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:56,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:27:56,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1239 trivial. 0 not checked. [2023-11-29 01:27:56,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:56,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129897512] [2023-11-29 01:27:56,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:27:56,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407995520] [2023-11-29 01:27:56,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407995520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:56,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:27:56,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:27:56,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548993660] [2023-11-29 01:27:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:56,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:27:56,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:56,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:27:56,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:27:56,196 INFO L87 Difference]: Start difference. First operand 5721 states and 8286 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 01:27:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:56,499 INFO L93 Difference]: Finished difference Result 10085 states and 14882 transitions. [2023-11-29 01:27:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:27:56,500 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), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 245 [2023-11-29 01:27:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:56,507 INFO L225 Difference]: With dead ends: 10085 [2023-11-29 01:27:56,507 INFO L226 Difference]: Without dead ends: 6267 [2023-11-29 01:27:56,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 243 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 01:27:56,511 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 9 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:56,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 912 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:27:56,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2023-11-29 01:27:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 6241. [2023-11-29 01:27:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6241 states, 6105 states have (on average 1.414905814905815) internal successors, (8638), 6114 states have internal predecessors, (8638), 80 states have call successors, (80), 63 states have call predecessors, (80), 48 states have return successors, (88), 63 states have call predecessors, (88), 80 states have call successors, (88) [2023-11-29 01:27:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6241 states to 6241 states and 8806 transitions. [2023-11-29 01:27:56,787 INFO L78 Accepts]: Start accepts. Automaton has 6241 states and 8806 transitions. Word has length 245 [2023-11-29 01:27:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:56,788 INFO L495 AbstractCegarLoop]: Abstraction has 6241 states and 8806 transitions. [2023-11-29 01:27:56,788 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), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 01:27:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 6241 states and 8806 transitions. [2023-11-29 01:27:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-29 01:27:56,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:56,790 INFO L195 NwaCegarLoop]: trace histogram [48, 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 01:27:56,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-29 01:27:56,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 01:27:56,991 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:27:56,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash -527366465, now seen corresponding path program 1 times [2023-11-29 01:27:56,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:56,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112308107] [2023-11-29 01:27:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:56,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:57,067 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:57,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590928007] [2023-11-29 01:27:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:57,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:57,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:57,069 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:57,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 01:27:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:57,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 1694 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:27:57,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:27:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1239 trivial. 0 not checked. [2023-11-29 01:27:57,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:27:57,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:27:57,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112308107] [2023-11-29 01:27:57,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:27:57,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590928007] [2023-11-29 01:27:57,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590928007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:27:57,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:27:57,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:27:57,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564862826] [2023-11-29 01:27:57,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:27:57,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:27:57,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:27:57,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:27:57,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:27:57,959 INFO L87 Difference]: Start difference. First operand 6241 states and 8806 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 01:27:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:27:58,321 INFO L93 Difference]: Finished difference Result 10133 states and 14616 transitions. [2023-11-29 01:27:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:27:58,321 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), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 245 [2023-11-29 01:27:58,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:27:58,328 INFO L225 Difference]: With dead ends: 10133 [2023-11-29 01:27:58,328 INFO L226 Difference]: Without dead ends: 5903 [2023-11-29 01:27:58,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 242 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 01:27:58,330 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 165 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:27:58,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1216 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:27:58,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2023-11-29 01:27:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5877. [2023-11-29 01:27:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5877 states, 5741 states have (on average 1.4095105382337572) internal successors, (8092), 5750 states have internal predecessors, (8092), 80 states have call successors, (80), 63 states have call predecessors, (80), 48 states have return successors, (88), 63 states have call predecessors, (88), 80 states have call successors, (88) [2023-11-29 01:27:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 8260 transitions. [2023-11-29 01:27:58,597 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 8260 transitions. Word has length 245 [2023-11-29 01:27:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:27:58,597 INFO L495 AbstractCegarLoop]: Abstraction has 5877 states and 8260 transitions. [2023-11-29 01:27:58,597 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), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 01:27:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 8260 transitions. [2023-11-29 01:27:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-11-29 01:27:58,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:27:58,599 INFO L195 NwaCegarLoop]: trace histogram [48, 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 01:27:58,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 01:27:58,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 01:27:58,800 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:27:58,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:27:58,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1312032435, now seen corresponding path program 1 times [2023-11-29 01:27:58,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:27:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220248760] [2023-11-29 01:27:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:58,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:27:58,889 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:27:58,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334934393] [2023-11-29 01:27:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:27:58,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:27:58,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:27:58,891 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:27:58,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 01:27:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:27:59,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:27:59,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 631 proven. 4 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2023-11-29 01:28:00,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1229 trivial. 0 not checked. [2023-11-29 01:28:00,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:00,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220248760] [2023-11-29 01:28:00,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:00,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334934393] [2023-11-29 01:28:00,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334934393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:00,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:00,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 01:28:00,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18513915] [2023-11-29 01:28:00,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:00,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:28:00,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:00,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:28:00,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:28:00,372 INFO L87 Difference]: Start difference. First operand 5877 states and 8260 transitions. Second operand has 15 states, 14 states have (on average 21.5) internal successors, (301), 14 states have internal predecessors, (301), 5 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-29 01:28:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:01,301 INFO L93 Difference]: Finished difference Result 12171 states and 17416 transitions. [2023-11-29 01:28:01,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:28:01,302 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 21.5) internal successors, (301), 14 states have internal predecessors, (301), 5 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 245 [2023-11-29 01:28:01,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:01,314 INFO L225 Difference]: With dead ends: 12171 [2023-11-29 01:28:01,314 INFO L226 Difference]: Without dead ends: 12170 [2023-11-29 01:28:01,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 478 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 01:28:01,317 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 3391 mSDsluCounter, 3952 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3393 SdHoareTripleChecker+Valid, 4516 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:01,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3393 Valid, 4516 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:28:01,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12170 states. [2023-11-29 01:28:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12170 to 11128. [2023-11-29 01:28:01,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11128 states, 10942 states have (on average 1.4309084262474867) internal successors, (15657), 10959 states have internal predecessors, (15657), 108 states have call successors, (108), 82 states have call predecessors, (108), 70 states have return successors, (116), 86 states have call predecessors, (116), 108 states have call successors, (116) [2023-11-29 01:28:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11128 states to 11128 states and 15881 transitions. [2023-11-29 01:28:01,693 INFO L78 Accepts]: Start accepts. Automaton has 11128 states and 15881 transitions. Word has length 245 [2023-11-29 01:28:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:01,693 INFO L495 AbstractCegarLoop]: Abstraction has 11128 states and 15881 transitions. [2023-11-29 01:28:01,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 21.5) internal successors, (301), 14 states have internal predecessors, (301), 5 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-29 01:28:01,693 INFO L276 IsEmpty]: Start isEmpty. Operand 11128 states and 15881 transitions. [2023-11-29 01:28:01,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-29 01:28:01,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:01,695 INFO L195 NwaCegarLoop]: trace histogram [48, 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] [2023-11-29 01:28:01,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 01:28:01,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:01,896 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:28:01,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash 47443434, now seen corresponding path program 1 times [2023-11-29 01:28:01,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:01,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493467833] [2023-11-29 01:28:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:01,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:01,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:01,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397532826] [2023-11-29 01:28:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:01,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:01,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:01,991 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:01,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 01:28:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:03,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:28:03,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-29 01:28:03,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-29 01:28:03,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:03,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493467833] [2023-11-29 01:28:03,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:03,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397532826] [2023-11-29 01:28:03,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397532826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:03,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:03,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3] total 5 [2023-11-29 01:28:03,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418835992] [2023-11-29 01:28:03,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:03,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:28:03,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:28:03,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:03,565 INFO L87 Difference]: Start difference. First operand 11128 states and 15881 transitions. Second operand has 6 states, 5 states have (on average 72.4) internal successors, (362), 6 states have internal predecessors, (362), 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 01:28:04,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:04,201 INFO L93 Difference]: Finished difference Result 24144 states and 34889 transitions. [2023-11-29 01:28:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:28:04,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 72.4) internal successors, (362), 6 states have internal predecessors, (362), 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 247 [2023-11-29 01:28:04,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:04,231 INFO L225 Difference]: With dead ends: 24144 [2023-11-29 01:28:04,231 INFO L226 Difference]: Without dead ends: 24143 [2023-11-29 01:28:04,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 488 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 01:28:04,237 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 1280 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:04,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 1487 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:28:04,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24143 states. [2023-11-29 01:28:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24143 to 24127. [2023-11-29 01:28:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24127 states, 23827 states have (on average 1.4468040458303606) internal successors, (34473), 23853 states have internal predecessors, (34473), 183 states have call successors, (183), 130 states have call predecessors, (183), 109 states have return successors, (191), 143 states have call predecessors, (191), 183 states have call successors, (191) [2023-11-29 01:28:04,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24127 states to 24127 states and 34847 transitions. [2023-11-29 01:28:04,955 INFO L78 Accepts]: Start accepts. Automaton has 24127 states and 34847 transitions. Word has length 247 [2023-11-29 01:28:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:04,955 INFO L495 AbstractCegarLoop]: Abstraction has 24127 states and 34847 transitions. [2023-11-29 01:28:04,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 72.4) internal successors, (362), 6 states have internal predecessors, (362), 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 01:28:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand 24127 states and 34847 transitions. [2023-11-29 01:28:04,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-11-29 01:28:04,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:04,958 INFO L195 NwaCegarLoop]: trace histogram [48, 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] [2023-11-29 01:28:04,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-29 01:28:05,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:05,158 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 01:28:05,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:05,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1063890242, now seen corresponding path program 1 times [2023-11-29 01:28:05,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:05,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525639144] [2023-11-29 01:28:05,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:05,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:05,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:05,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418531036] [2023-11-29 01:28:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:05,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:05,243 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:05,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-29 01:28:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:06,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:28:06,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:06,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2023-11-29 01:28:06,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:06,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:06,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525639144] [2023-11-29 01:28:06,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:06,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418531036] [2023-11-29 01:28:06,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418531036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:06,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:06,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:28:06,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435203650] [2023-11-29 01:28:06,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:06,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:28:06,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:06,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:28:06,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:28:06,215 INFO L87 Difference]: Start difference. First operand 24127 states and 34847 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 01:28:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:06,771 INFO L93 Difference]: Finished difference Result 31026 states and 44732 transitions. [2023-11-29 01:28:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:28:06,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 255 [2023-11-29 01:28:06,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:06,782 INFO L225 Difference]: With dead ends: 31026 [2023-11-29 01:28:06,782 INFO L226 Difference]: Without dead ends: 6509 [2023-11-29 01:28:06,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 253 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 01:28:06,796 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 14 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:06,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 925 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:28:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6509 states. [2023-11-29 01:28:07,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6509 to 6119. [2023-11-29 01:28:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6119 states, 6006 states have (on average 1.3892773892773893) internal successors, (8344), 6016 states have internal predecessors, (8344), 59 states have call successors, (59), 53 states have call predecessors, (59), 47 states have return successors, (67), 49 states have call predecessors, (67), 59 states have call successors, (67) [2023-11-29 01:28:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 8470 transitions. [2023-11-29 01:28:07,164 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 8470 transitions. Word has length 255 [2023-11-29 01:28:07,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:07,164 INFO L495 AbstractCegarLoop]: Abstraction has 6119 states and 8470 transitions. [2023-11-29 01:28:07,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 01:28:07,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 8470 transitions. [2023-11-29 01:28:07,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-29 01:28:07,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:07,167 INFO L195 NwaCegarLoop]: trace histogram [48, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:07,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-29 01:28:07,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 01:28:07,367 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:28:07,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:07,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1048902757, now seen corresponding path program 1 times [2023-11-29 01:28:07,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:07,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845807214] [2023-11-29 01:28:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:07,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:07,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:07,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668078044] [2023-11-29 01:28:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:07,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:07,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:07,451 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:07,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-29 01:28:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:08,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 2026 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:28:08,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 752 proven. 8 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-11-29 01:28:08,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 73 proven. 10 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2023-11-29 01:28:09,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:09,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845807214] [2023-11-29 01:28:09,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:09,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668078044] [2023-11-29 01:28:09,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668078044] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:09,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:09,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 21 [2023-11-29 01:28:09,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266544720] [2023-11-29 01:28:09,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:09,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:28:09,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:09,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:28:09,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:28:09,231 INFO L87 Difference]: Start difference. First operand 6119 states and 8470 transitions. Second operand has 22 states, 21 states have (on average 15.904761904761905) internal successors, (334), 20 states have internal predecessors, (334), 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 01:28:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:10,004 INFO L93 Difference]: Finished difference Result 10197 states and 14209 transitions. [2023-11-29 01:28:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:28:10,005 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.904761904761905) internal successors, (334), 20 states have internal predecessors, (334), 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 270 [2023-11-29 01:28:10,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:10,011 INFO L225 Difference]: With dead ends: 10197 [2023-11-29 01:28:10,011 INFO L226 Difference]: Without dead ends: 5687 [2023-11-29 01:28:10,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=392, Invalid=868, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 01:28:10,016 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 1539 mSDsluCounter, 5182 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 6132 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:10,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 6132 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:28:10,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2023-11-29 01:28:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 3914. [2023-11-29 01:28:10,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3914 states, 3835 states have (on average 1.3814863102998696) internal successors, (5298), 3842 states have internal predecessors, (5298), 41 states have call successors, (41), 37 states have call predecessors, (41), 32 states have return successors, (43), 34 states have call predecessors, (43), 41 states have call successors, (43) [2023-11-29 01:28:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3914 states to 3914 states and 5382 transitions. [2023-11-29 01:28:10,224 INFO L78 Accepts]: Start accepts. Automaton has 3914 states and 5382 transitions. Word has length 270 [2023-11-29 01:28:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:10,225 INFO L495 AbstractCegarLoop]: Abstraction has 3914 states and 5382 transitions. [2023-11-29 01:28:10,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.904761904761905) internal successors, (334), 20 states have internal predecessors, (334), 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 01:28:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3914 states and 5382 transitions. [2023-11-29 01:28:10,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-29 01:28:10,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:10,227 INFO L195 NwaCegarLoop]: trace histogram [48, 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, 1, 1] [2023-11-29 01:28:10,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-29 01:28:10,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 01:28:10,428 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:28:10,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:10,429 INFO L85 PathProgramCache]: Analyzing trace with hash 524094452, now seen corresponding path program 1 times [2023-11-29 01:28:10,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:10,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954097716] [2023-11-29 01:28:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:10,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:10,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121251914] [2023-11-29 01:28:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:10,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:10,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:10,515 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:10,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-29 01:28:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:11,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:28:11,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:11,604 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 01:28:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2023-11-29 01:28:11,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:11,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:11,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954097716] [2023-11-29 01:28:11,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:11,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121251914] [2023-11-29 01:28:11,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121251914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:11,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:11,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:28:11,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260260834] [2023-11-29 01:28:11,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:11,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:28:11,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:11,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:28:11,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:28:11,755 INFO L87 Difference]: Start difference. First operand 3914 states and 5382 transitions. Second operand has 5 states, 4 states have (on average 49.25) internal successors, (197), 5 states have internal predecessors, (197), 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 01:28:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:12,152 INFO L93 Difference]: Finished difference Result 4487 states and 6118 transitions. [2023-11-29 01:28:12,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:28:12,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 49.25) internal successors, (197), 5 states have internal predecessors, (197), 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 272 [2023-11-29 01:28:12,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:12,158 INFO L225 Difference]: With dead ends: 4487 [2023-11-29 01:28:12,158 INFO L226 Difference]: Without dead ends: 4486 [2023-11-29 01:28:12,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 265 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 01:28:12,159 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 361 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:12,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1784 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:28:12,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2023-11-29 01:28:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 4391. [2023-11-29 01:28:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4301 states have (on average 1.3694489653568938) internal successors, (5890), 4310 states have internal predecessors, (5890), 47 states have call successors, (47), 42 states have call predecessors, (47), 37 states have return successors, (49), 38 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-29 01:28:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 5986 transitions. [2023-11-29 01:28:12,383 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 5986 transitions. Word has length 272 [2023-11-29 01:28:12,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:12,383 INFO L495 AbstractCegarLoop]: Abstraction has 4391 states and 5986 transitions. [2023-11-29 01:28:12,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 49.25) internal successors, (197), 5 states have internal predecessors, (197), 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 01:28:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 5986 transitions. [2023-11-29 01:28:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-11-29 01:28:12,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:12,385 INFO L195 NwaCegarLoop]: trace histogram [48, 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, 1, 1, 1] [2023-11-29 01:28:12,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-29 01:28:12,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 01:28:12,586 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:28:12,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:12,587 INFO L85 PathProgramCache]: Analyzing trace with hash -932939625, now seen corresponding path program 1 times [2023-11-29 01:28:12,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:12,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628884185] [2023-11-29 01:28:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:12,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:12,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:12,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511394246] [2023-11-29 01:28:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:12,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:12,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:12,673 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:12,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-29 01:28:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:13,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:28:13,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:13,941 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 01:28:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1243 trivial. 0 not checked. [2023-11-29 01:28:13,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:13,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:13,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628884185] [2023-11-29 01:28:13,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:13,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511394246] [2023-11-29 01:28:13,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511394246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:13,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:13,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:28:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899645543] [2023-11-29 01:28:13,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:13,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:28:13,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:28:13,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:13,954 INFO L87 Difference]: Start difference. First operand 4391 states and 5986 transitions. Second operand has 6 states, 5 states have (on average 39.6) internal successors, (198), 6 states have internal predecessors, (198), 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 01:28:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:14,546 INFO L93 Difference]: Finished difference Result 4474 states and 6086 transitions. [2023-11-29 01:28:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:28:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 39.6) internal successors, (198), 6 states have internal predecessors, (198), 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 273 [2023-11-29 01:28:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:14,552 INFO L225 Difference]: With dead ends: 4474 [2023-11-29 01:28:14,553 INFO L226 Difference]: Without dead ends: 4448 [2023-11-29 01:28:14,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 265 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 01:28:14,554 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 361 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:14,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1736 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:28:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2023-11-29 01:28:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4365. [2023-11-29 01:28:14,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 4281 states have (on average 1.3669703340341042) internal successors, (5852), 4288 states have internal predecessors, (5852), 45 states have call successors, (45), 40 states have call predecessors, (45), 34 states have return successors, (45), 36 states have call predecessors, (45), 43 states have call successors, (45) [2023-11-29 01:28:14,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 5942 transitions. [2023-11-29 01:28:14,883 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 5942 transitions. Word has length 273 [2023-11-29 01:28:14,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:14,883 INFO L495 AbstractCegarLoop]: Abstraction has 4365 states and 5942 transitions. [2023-11-29 01:28:14,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 39.6) internal successors, (198), 6 states have internal predecessors, (198), 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 01:28:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 5942 transitions. [2023-11-29 01:28:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-11-29 01:28:14,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:14,886 INFO L195 NwaCegarLoop]: trace histogram [48, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:14,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-29 01:28:15,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 01:28:15,086 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:28:15,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:15,087 INFO L85 PathProgramCache]: Analyzing trace with hash 42797327, now seen corresponding path program 1 times [2023-11-29 01:28:15,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:15,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613391985] [2023-11-29 01:28:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:15,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:15,188 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:15,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195528333] [2023-11-29 01:28:15,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:15,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:15,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:15,189 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:15,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-29 01:28:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:16,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:28:16,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-29 01:28:16,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-29 01:28:16,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:16,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613391985] [2023-11-29 01:28:16,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:16,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195528333] [2023-11-29 01:28:16,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195528333] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:16,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:16,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2023-11-29 01:28:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46981930] [2023-11-29 01:28:16,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:16,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:28:16,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:16,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:28:16,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:28:16,913 INFO L87 Difference]: Start difference. First operand 4365 states and 5942 transitions. Second operand has 12 states, 11 states have (on average 39.09090909090909) internal successors, (430), 12 states have internal predecessors, (430), 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 01:28:17,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:17,531 INFO L93 Difference]: Finished difference Result 8857 states and 12079 transitions. [2023-11-29 01:28:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:28:17,532 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 39.09090909090909) internal successors, (430), 12 states have internal predecessors, (430), 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 281 [2023-11-29 01:28:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:17,542 INFO L225 Difference]: With dead ends: 8857 [2023-11-29 01:28:17,542 INFO L226 Difference]: Without dead ends: 8856 [2023-11-29 01:28:17,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 550 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 01:28:17,544 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 4477 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4477 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:17,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4477 Valid, 2936 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:28:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8856 states. [2023-11-29 01:28:17,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8856 to 8289. [2023-11-29 01:28:17,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8289 states, 8205 states have (on average 1.383790371724558) internal successors, (11354), 8212 states have internal predecessors, (11354), 45 states have call successors, (45), 40 states have call predecessors, (45), 34 states have return successors, (45), 36 states have call predecessors, (45), 43 states have call successors, (45) [2023-11-29 01:28:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8289 states to 8289 states and 11444 transitions. [2023-11-29 01:28:17,909 INFO L78 Accepts]: Start accepts. Automaton has 8289 states and 11444 transitions. Word has length 281 [2023-11-29 01:28:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:17,909 INFO L495 AbstractCegarLoop]: Abstraction has 8289 states and 11444 transitions. [2023-11-29 01:28:17,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 39.09090909090909) internal successors, (430), 12 states have internal predecessors, (430), 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 01:28:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 8289 states and 11444 transitions. [2023-11-29 01:28:17,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-11-29 01:28:17,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:17,912 INFO L195 NwaCegarLoop]: trace histogram [70, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:17,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-11-29 01:28:18,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-29 01:28:18,113 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:28:18,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2135411174, now seen corresponding path program 1 times [2023-11-29 01:28:18,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:18,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869335788] [2023-11-29 01:28:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:18,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:18,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:18,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629001525] [2023-11-29 01:28:18,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:18,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:18,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:18,214 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:18,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-29 01:28:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:19,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 2615 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:28:19,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2864 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 2725 trivial. 0 not checked. [2023-11-29 01:28:19,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2864 backedges. 0 proven. 1947 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2023-11-29 01:28:20,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:20,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869335788] [2023-11-29 01:28:20,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:20,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629001525] [2023-11-29 01:28:20,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629001525] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:20,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:20,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14] total 21 [2023-11-29 01:28:20,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368762700] [2023-11-29 01:28:20,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:20,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:28:20,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:20,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:28:20,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=292, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:28:20,655 INFO L87 Difference]: Start difference. First operand 8289 states and 11444 transitions. Second operand has 22 states, 21 states have (on average 20.142857142857142) internal successors, (423), 22 states have internal predecessors, (423), 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 01:28:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:23,708 INFO L93 Difference]: Finished difference Result 55948 states and 77919 transitions. [2023-11-29 01:28:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 01:28:23,709 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 20.142857142857142) internal successors, (423), 22 states have internal predecessors, (423), 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 318 [2023-11-29 01:28:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:23,780 INFO L225 Difference]: With dead ends: 55948 [2023-11-29 01:28:23,780 INFO L226 Difference]: Without dead ends: 55940 [2023-11-29 01:28:23,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 623 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 01:28:23,788 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 10236 mSDsluCounter, 6108 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10272 SdHoareTripleChecker+Valid, 6549 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:23,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10272 Valid, 6549 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:28:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55940 states. [2023-11-29 01:28:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55940 to 14360. [2023-11-29 01:28:24,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14360 states, 14119 states have (on average 1.358169842056803) internal successors, (19176), 14123 states have internal predecessors, (19176), 135 states have call successors, (135), 120 states have call predecessors, (135), 101 states have return successors, (140), 116 states have call predecessors, (140), 133 states have call successors, (140) [2023-11-29 01:28:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14360 states to 14360 states and 19451 transitions. [2023-11-29 01:28:24,937 INFO L78 Accepts]: Start accepts. Automaton has 14360 states and 19451 transitions. Word has length 318 [2023-11-29 01:28:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:24,937 INFO L495 AbstractCegarLoop]: Abstraction has 14360 states and 19451 transitions. [2023-11-29 01:28:24,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 20.142857142857142) internal successors, (423), 22 states have internal predecessors, (423), 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 01:28:24,938 INFO L276 IsEmpty]: Start isEmpty. Operand 14360 states and 19451 transitions. [2023-11-29 01:28:24,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-11-29 01:28:24,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:24,942 INFO L195 NwaCegarLoop]: trace histogram [96, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:24,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-29 01:28:25,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:25,143 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:28:25,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1408229452, now seen corresponding path program 1 times [2023-11-29 01:28:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:25,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430037446] [2023-11-29 01:28:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:25,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:25,313 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:25,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945938214] [2023-11-29 01:28:25,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:25,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:25,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:25,314 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:25,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 01:28:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:26,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 2830 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:28:26,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5102 backedges. 74 proven. 3802 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2023-11-29 01:28:26,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5102 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 4974 trivial. 0 not checked. [2023-11-29 01:28:27,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:27,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430037446] [2023-11-29 01:28:27,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:27,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945938214] [2023-11-29 01:28:27,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945938214] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:27,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:27,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15] total 23 [2023-11-29 01:28:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276993226] [2023-11-29 01:28:27,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:27,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:28:27,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:27,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:28:27,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:28:27,421 INFO L87 Difference]: Start difference. First operand 14360 states and 19451 transitions. Second operand has 24 states, 23 states have (on average 14.826086956521738) internal successors, (341), 20 states have internal predecessors, (341), 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 01:28:30,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:30,553 INFO L93 Difference]: Finished difference Result 35019 states and 48112 transitions. [2023-11-29 01:28:30,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 01:28:30,553 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 14.826086956521738) internal successors, (341), 20 states have internal predecessors, (341), 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 327 [2023-11-29 01:28:30,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:30,592 INFO L225 Difference]: With dead ends: 35019 [2023-11-29 01:28:30,592 INFO L226 Difference]: Without dead ends: 34928 [2023-11-29 01:28:30,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=589, Invalid=1303, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 01:28:30,598 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 6637 mSDsluCounter, 8266 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6645 SdHoareTripleChecker+Valid, 8714 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:30,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6645 Valid, 8714 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:28:30,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34928 states. [2023-11-29 01:28:32,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34928 to 20677. [2023-11-29 01:28:32,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20677 states, 20273 states have (on average 1.3445469343461747) internal successors, (27258), 20289 states have internal predecessors, (27258), 241 states have call successors, (241), 181 states have call predecessors, (241), 158 states have return successors, (254), 206 states have call predecessors, (254), 239 states have call successors, (254) [2023-11-29 01:28:32,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20677 states to 20677 states and 27753 transitions. [2023-11-29 01:28:32,081 INFO L78 Accepts]: Start accepts. Automaton has 20677 states and 27753 transitions. Word has length 327 [2023-11-29 01:28:32,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:32,081 INFO L495 AbstractCegarLoop]: Abstraction has 20677 states and 27753 transitions. [2023-11-29 01:28:32,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 14.826086956521738) internal successors, (341), 20 states have internal predecessors, (341), 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 01:28:32,081 INFO L276 IsEmpty]: Start isEmpty. Operand 20677 states and 27753 transitions. [2023-11-29 01:28:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-11-29 01:28:32,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:32,085 INFO L195 NwaCegarLoop]: trace histogram [48, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 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 01:28:32,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-29 01:28:32,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 01:28:32,286 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:28:32,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:32,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2060560881, now seen corresponding path program 2 times [2023-11-29 01:28:32,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:32,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642443250] [2023-11-29 01:28:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:32,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:32,378 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:32,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482692363] [2023-11-29 01:28:32,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:28:32,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:32,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:32,379 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:32,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-29 01:28:33,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:28:33,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:33,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:28:33,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:33,591 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 01:28:33,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:28:33,880 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 01:28:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1737 trivial. 0 not checked. [2023-11-29 01:28:34,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:34,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:34,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642443250] [2023-11-29 01:28:34,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:34,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482692363] [2023-11-29 01:28:34,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482692363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:34,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:34,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 01:28:34,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630545741] [2023-11-29 01:28:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:28:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:34,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:28:34,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:28:34,002 INFO L87 Difference]: Start difference. First operand 20677 states and 27753 transitions. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 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 01:28:37,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:37,045 INFO L93 Difference]: Finished difference Result 32088 states and 43687 transitions. [2023-11-29 01:28:37,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:28:37,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 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 341 [2023-11-29 01:28:37,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:37,068 INFO L225 Difference]: With dead ends: 32088 [2023-11-29 01:28:37,068 INFO L226 Difference]: Without dead ends: 20993 [2023-11-29 01:28:37,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:28:37,074 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 816 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:37,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 3169 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:28:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20993 states. [2023-11-29 01:28:38,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20993 to 20837. [2023-11-29 01:28:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20837 states, 20433 states have (on average 1.3430724807908776) internal successors, (27443), 20449 states have internal predecessors, (27443), 241 states have call successors, (241), 181 states have call predecessors, (241), 158 states have return successors, (254), 206 states have call predecessors, (254), 239 states have call successors, (254) [2023-11-29 01:28:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20837 states to 20837 states and 27938 transitions. [2023-11-29 01:28:38,528 INFO L78 Accepts]: Start accepts. Automaton has 20837 states and 27938 transitions. Word has length 341 [2023-11-29 01:28:38,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:38,528 INFO L495 AbstractCegarLoop]: Abstraction has 20837 states and 27938 transitions. [2023-11-29 01:28:38,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 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 01:28:38,528 INFO L276 IsEmpty]: Start isEmpty. Operand 20837 states and 27938 transitions. [2023-11-29 01:28:38,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-11-29 01:28:38,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:38,532 INFO L195 NwaCegarLoop]: trace histogram [48, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 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 01:28:38,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-29 01:28:38,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 01:28:38,732 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 01:28:38,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:38,733 INFO L85 PathProgramCache]: Analyzing trace with hash -303280781, now seen corresponding path program 1 times [2023-11-29 01:28:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:38,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749695637] [2023-11-29 01:28:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:38,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:38,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:38,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693788985] [2023-11-29 01:28:38,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:38,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:38,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:38,825 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:38,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 01:28:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:40,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:28:40,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1737 trivial. 0 not checked. [2023-11-29 01:28:40,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:40,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:40,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749695637] [2023-11-29 01:28:40,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:40,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693788985] [2023-11-29 01:28:40,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693788985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:40,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:40,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:28:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831674983] [2023-11-29 01:28:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:40,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:28:40,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:40,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:28:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:28:40,203 INFO L87 Difference]: Start difference. First operand 20837 states and 27938 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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 01:28:41,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:41,745 INFO L93 Difference]: Finished difference Result 37882 states and 52677 transitions. [2023-11-29 01:28:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:28:41,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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 341 [2023-11-29 01:28:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:41,775 INFO L225 Difference]: With dead ends: 37882 [2023-11-29 01:28:41,775 INFO L226 Difference]: Without dead ends: 26727 [2023-11-29 01:28:41,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 337 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 01:28:41,783 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 148 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:41,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1348 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:28:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26727 states. [2023-11-29 01:28:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26727 to 21987. [2023-11-29 01:28:43,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21987 states, 21583 states have (on average 1.3287309456516703) internal successors, (28678), 21599 states have internal predecessors, (28678), 241 states have call successors, (241), 181 states have call predecessors, (241), 158 states have return successors, (254), 206 states have call predecessors, (254), 239 states have call successors, (254) [2023-11-29 01:28:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21987 states to 21987 states and 29173 transitions. [2023-11-29 01:28:43,250 INFO L78 Accepts]: Start accepts. Automaton has 21987 states and 29173 transitions. Word has length 341 [2023-11-29 01:28:43,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:43,250 INFO L495 AbstractCegarLoop]: Abstraction has 21987 states and 29173 transitions. [2023-11-29 01:28:43,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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 01:28:43,250 INFO L276 IsEmpty]: Start isEmpty. Operand 21987 states and 29173 transitions. [2023-11-29 01:28:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-11-29 01:28:43,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:43,254 INFO L195 NwaCegarLoop]: trace histogram [48, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 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] [2023-11-29 01:28:43,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-29 01:28:43,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:43,454 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:28:43,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:43,455 INFO L85 PathProgramCache]: Analyzing trace with hash 122969693, now seen corresponding path program 1 times [2023-11-29 01:28:43,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:43,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487877740] [2023-11-29 01:28:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:43,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:43,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:43,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141830404] [2023-11-29 01:28:43,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:43,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:43,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:43,549 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:43,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 01:28:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:44,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:28:44,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 0 proven. 500 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-29 01:28:45,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1737 backedges. 0 proven. 500 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2023-11-29 01:28:45,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:45,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487877740] [2023-11-29 01:28:45,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:45,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141830404] [2023-11-29 01:28:45,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141830404] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:45,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:45,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2023-11-29 01:28:45,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484370427] [2023-11-29 01:28:45,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:45,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:28:45,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:45,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:28:45,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:28:45,695 INFO L87 Difference]: Start difference. First operand 21987 states and 29173 transitions. Second operand has 24 states, 23 states have (on average 24.0) internal successors, (552), 24 states have internal predecessors, (552), 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 01:28:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:49,205 INFO L93 Difference]: Finished difference Result 38151 states and 50920 transitions. [2023-11-29 01:28:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:28:49,206 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 24.0) internal successors, (552), 24 states have internal predecessors, (552), 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 342 [2023-11-29 01:28:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:49,249 INFO L225 Difference]: With dead ends: 38151 [2023-11-29 01:28:49,249 INFO L226 Difference]: Without dead ends: 38150 [2023-11-29 01:28:49,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 660 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 01:28:49,256 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 13468 mSDsluCounter, 5422 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13468 SdHoareTripleChecker+Valid, 5895 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:49,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13468 Valid, 5895 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:28:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38150 states. [2023-11-29 01:28:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38150 to 36447. [2023-11-29 01:28:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36447 states, 36043 states have (on average 1.3456704491856948) internal successors, (48502), 36059 states have internal predecessors, (48502), 241 states have call successors, (241), 181 states have call predecessors, (241), 158 states have return successors, (254), 206 states have call predecessors, (254), 239 states have call successors, (254) [2023-11-29 01:28:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36447 states to 36447 states and 48997 transitions. [2023-11-29 01:28:51,443 INFO L78 Accepts]: Start accepts. Automaton has 36447 states and 48997 transitions. Word has length 342 [2023-11-29 01:28:51,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:51,444 INFO L495 AbstractCegarLoop]: Abstraction has 36447 states and 48997 transitions. [2023-11-29 01:28:51,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 24.0) internal successors, (552), 24 states have internal predecessors, (552), 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 01:28:51,444 INFO L276 IsEmpty]: Start isEmpty. Operand 36447 states and 48997 transitions. [2023-11-29 01:28:51,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2023-11-29 01:28:51,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:51,448 INFO L195 NwaCegarLoop]: trace histogram [48, 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, 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] [2023-11-29 01:28:51,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-29 01:28:51,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 01:28:51,649 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:28:51,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 946135741, now seen corresponding path program 1 times [2023-11-29 01:28:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:51,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221284359] [2023-11-29 01:28:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:51,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:51,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:51,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193214871] [2023-11-29 01:28:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:51,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:51,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:51,730 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:51,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-29 01:28:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:53,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 2190 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:28:53,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 1295 trivial. 0 not checked. [2023-11-29 01:28:53,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:28:53,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:53,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221284359] [2023-11-29 01:28:53,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:53,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193214871] [2023-11-29 01:28:53,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193214871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:28:53,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:28:53,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:28:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006455393] [2023-11-29 01:28:53,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:28:53,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:28:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:28:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:53,303 INFO L87 Difference]: Start difference. First operand 36447 states and 48997 transitions. Second operand has 6 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 states have internal predecessors, (250), 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 01:28:55,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:55,591 INFO L93 Difference]: Finished difference Result 64947 states and 88110 transitions. [2023-11-29 01:28:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:28:55,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 states have internal predecessors, (250), 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 375 [2023-11-29 01:28:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:55,633 INFO L225 Difference]: With dead ends: 64947 [2023-11-29 01:28:55,633 INFO L226 Difference]: Without dead ends: 38242 [2023-11-29 01:28:55,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:28:55,643 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 30 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:55,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1987 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:28:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38242 states. [2023-11-29 01:28:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38242 to 37552. [2023-11-29 01:28:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37552 states, 37148 states have (on average 1.3383493054807796) internal successors, (49717), 37164 states have internal predecessors, (49717), 241 states have call successors, (241), 181 states have call predecessors, (241), 158 states have return successors, (254), 206 states have call predecessors, (254), 239 states have call successors, (254) [2023-11-29 01:28:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37552 states to 37552 states and 50212 transitions. [2023-11-29 01:28:57,740 INFO L78 Accepts]: Start accepts. Automaton has 37552 states and 50212 transitions. Word has length 375 [2023-11-29 01:28:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:57,741 INFO L495 AbstractCegarLoop]: Abstraction has 37552 states and 50212 transitions. [2023-11-29 01:28:57,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 states have internal predecessors, (250), 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 01:28:57,741 INFO L276 IsEmpty]: Start isEmpty. Operand 37552 states and 50212 transitions. [2023-11-29 01:28:57,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-11-29 01:28:57,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:57,746 INFO L195 NwaCegarLoop]: trace histogram [48, 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, 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] [2023-11-29 01:28:57,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-29 01:28:57,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 01:28:57,946 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:28:57,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash -816753170, now seen corresponding path program 1 times [2023-11-29 01:28:57,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:57,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539858191] [2023-11-29 01:28:57,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:57,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:58,044 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:58,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985346261] [2023-11-29 01:28:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:58,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:58,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:58,046 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:58,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-29 01:28:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:28:59,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 2191 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:28:59,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:59,474 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 01:28:59,764 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 01:28:59,773 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 01:28:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2023-11-29 01:28:59,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2023-11-29 01:28:59,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539858191] [2023-11-29 01:28:59,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985346261] [2023-11-29 01:28:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985346261] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:59,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:59,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 01:28:59,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493061176] [2023-11-29 01:28:59,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:59,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:28:59,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:59,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:28:59,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:28:59,976 INFO L87 Difference]: Start difference. First operand 37552 states and 50212 transitions. Second operand has 11 states, 11 states have (on average 30.363636363636363) internal successors, (334), 11 states have internal predecessors, (334), 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 01:29:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:29:02,691 INFO L93 Difference]: Finished difference Result 51009 states and 68364 transitions. [2023-11-29 01:29:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:29:02,691 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 30.363636363636363) internal successors, (334), 11 states have internal predecessors, (334), 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 376 [2023-11-29 01:29:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:29:02,738 INFO L225 Difference]: With dead ends: 51009 [2023-11-29 01:29:02,738 INFO L226 Difference]: Without dead ends: 39667 [2023-11-29 01:29:02,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 734 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 01:29:02,753 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1476 mSDsluCounter, 3294 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 3746 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:29:02,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 3746 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:29:02,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39667 states. [2023-11-29 01:29:04,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39667 to 38124. [2023-11-29 01:29:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38124 states, 37694 states have (on average 1.337321589642914) internal successors, (50409), 37710 states have internal predecessors, (50409), 264 states have call successors, (264), 184 states have call predecessors, (264), 161 states have return successors, (277), 229 states have call predecessors, (277), 262 states have call successors, (277) [2023-11-29 01:29:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38124 states to 38124 states and 50950 transitions. [2023-11-29 01:29:04,993 INFO L78 Accepts]: Start accepts. Automaton has 38124 states and 50950 transitions. Word has length 376 [2023-11-29 01:29:04,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:29:04,994 INFO L495 AbstractCegarLoop]: Abstraction has 38124 states and 50950 transitions. [2023-11-29 01:29:04,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.363636363636363) internal successors, (334), 11 states have internal predecessors, (334), 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 01:29:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 38124 states and 50950 transitions. [2023-11-29 01:29:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2023-11-29 01:29:05,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:29:05,003 INFO L195 NwaCegarLoop]: trace histogram [48, 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, 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, 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] [2023-11-29 01:29:05,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-11-29 01:29:05,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 01:29:05,204 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:29:05,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:29:05,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1904725010, now seen corresponding path program 1 times [2023-11-29 01:29:05,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:29:05,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714563076] [2023-11-29 01:29:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:05,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:29:05,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:29:05,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494327429] [2023-11-29 01:29:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:05,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:29:05,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:29:05,353 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:29:05,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 01:29:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:29:07,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:29:07,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:29:07,201 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 01:29:07,508 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 01:29:07,630 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 01:29:07,744 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 01:29:07,756 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 01:29:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2023-11-29 01:29:07,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:29:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2023-11-29 01:29:08,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:29:08,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714563076] [2023-11-29 01:29:08,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:29:08,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494327429] [2023-11-29 01:29:08,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494327429] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:29:08,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:29:08,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-29 01:29:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69801277] [2023-11-29 01:29:08,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:29:08,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 01:29:08,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:29:08,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 01:29:08,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:29:08,231 INFO L87 Difference]: Start difference. First operand 38124 states and 50950 transitions. Second operand has 19 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 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 01:29:11,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:29:11,408 INFO L93 Difference]: Finished difference Result 88474 states and 118476 transitions. [2023-11-29 01:29:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 01:29:11,409 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 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 540 [2023-11-29 01:29:11,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:29:11,486 INFO L225 Difference]: With dead ends: 88474 [2023-11-29 01:29:11,486 INFO L226 Difference]: Without dead ends: 60109 [2023-11-29 01:29:11,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1088 GetRequests, 1054 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 01:29:11,507 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1548 mSDsluCounter, 5171 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 5623 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:29:11,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 5623 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:29:11,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60109 states. [2023-11-29 01:29:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60109 to 53674. [2023-11-29 01:29:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53674 states, 52704 states have (on average 1.321835154826958) internal successors, (69666), 52766 states have internal predecessors, (69666), 804 states have call successors, (804), 184 states have call predecessors, (804), 161 states have return successors, (854), 723 states have call predecessors, (854), 802 states have call successors, (854) [2023-11-29 01:29:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53674 states to 53674 states and 71324 transitions. [2023-11-29 01:29:14,542 INFO L78 Accepts]: Start accepts. Automaton has 53674 states and 71324 transitions. Word has length 540 [2023-11-29 01:29:14,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:29:14,543 INFO L495 AbstractCegarLoop]: Abstraction has 53674 states and 71324 transitions. [2023-11-29 01:29:14,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 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 01:29:14,543 INFO L276 IsEmpty]: Start isEmpty. Operand 53674 states and 71324 transitions. [2023-11-29 01:29:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-11-29 01:29:14,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:29:14,562 INFO L195 NwaCegarLoop]: trace histogram [192, 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, 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, 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 01:29:14,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-29 01:29:14,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 01:29:14,762 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting alt_freeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:29:14,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:29:14,763 INFO L85 PathProgramCache]: Analyzing trace with hash -986648703, now seen corresponding path program 1 times [2023-11-29 01:29:14,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:29:14,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223218937] [2023-11-29 01:29:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:14,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:29:15,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:29:15,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954802800] [2023-11-29 01:29:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:15,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:29:15,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:29:15,033 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:29:15,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 01:29:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:29:17,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 5774 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 01:29:17,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:29:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 20976 backedges. 209 proven. 18183 refuted. 0 times theorem prover too weak. 2584 trivial. 0 not checked. [2023-11-29 01:29:17,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:29:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 20976 backedges. 209 proven. 523 refuted. 0 times theorem prover too weak. 20244 trivial. 0 not checked. [2023-11-29 01:29:19,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:29:19,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223218937] [2023-11-29 01:29:19,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:29:19,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954802800] [2023-11-29 01:29:19,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954802800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:29:19,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:29:19,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 34] total 46 [2023-11-29 01:29:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233005826] [2023-11-29 01:29:19,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:29:19,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 01:29:19,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:29:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 01:29:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=1646, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 01:29:19,131 INFO L87 Difference]: Start difference. First operand 53674 states and 71324 transitions. Second operand has 47 states, 46 states have (on average 16.565217391304348) internal successors, (762), 38 states have internal predecessors, (762), 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 01:29:27,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:29:27,224 INFO L93 Difference]: Finished difference Result 125282 states and 168692 transitions. [2023-11-29 01:29:27,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 01:29:27,225 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 16.565217391304348) internal successors, (762), 38 states have internal predecessors, (762), 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 674 [2023-11-29 01:29:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:29:27,387 INFO L225 Difference]: With dead ends: 125282 [2023-11-29 01:29:27,387 INFO L226 Difference]: Without dead ends: 125128 [2023-11-29 01:29:27,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1410 GetRequests, 1328 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2202, Invalid=4604, Unknown=0, NotChecked=0, Total=6806 [2023-11-29 01:29:27,403 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 22953 mSDsluCounter, 10969 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 991 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22969 SdHoareTripleChecker+Valid, 11417 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:29:27,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22969 Valid, 11417 Invalid, 1984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [991 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:29:27,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125128 states. [2023-11-29 01:29:30,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125128 to 41597. [2023-11-29 01:29:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41597 states, 40578 states have (on average 1.3041549608162057) internal successors, (52920), 40637 states have internal predecessors, (52920), 839 states have call successors, (839), 196 states have call predecessors, (839), 176 states have return successors, (841), 763 states have call predecessors, (841), 839 states have call successors, (841) [2023-11-29 01:29:30,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41597 states to 41597 states and 54600 transitions. [2023-11-29 01:29:30,390 INFO L78 Accepts]: Start accepts. Automaton has 41597 states and 54600 transitions. Word has length 674 [2023-11-29 01:29:30,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:29:30,390 INFO L495 AbstractCegarLoop]: Abstraction has 41597 states and 54600 transitions. [2023-11-29 01:29:30,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 16.565217391304348) internal successors, (762), 38 states have internal predecessors, (762), 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 01:29:30,391 INFO L276 IsEmpty]: Start isEmpty. Operand 41597 states and 54600 transitions. [2023-11-29 01:29:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2023-11-29 01:29:30,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:29:30,411 INFO L195 NwaCegarLoop]: trace histogram [192, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2023-11-29 01:29:30,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-29 01:29:30,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:29:30,612 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:29:30,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:29:30,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1513540845, now seen corresponding path program 1 times [2023-11-29 01:29:30,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:29:30,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711890113] [2023-11-29 01:29:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:30,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:29:30,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:29:30,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087591756] [2023-11-29 01:29:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:30,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:29:30,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:29:30,966 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:29:30,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 01:29:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:29:33,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 5906 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 01:29:33,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:29:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 21005 backedges. 212 proven. 18182 refuted. 0 times theorem prover too weak. 2611 trivial. 0 not checked. [2023-11-29 01:29:34,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:29:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 21005 backedges. 212 proven. 543 refuted. 0 times theorem prover too weak. 20250 trivial. 0 not checked. [2023-11-29 01:29:35,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:29:35,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711890113] [2023-11-29 01:29:35,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:29:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087591756] [2023-11-29 01:29:35,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087591756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:29:35,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:29:35,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 32] total 45 [2023-11-29 01:29:35,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448428989] [2023-11-29 01:29:35,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:29:35,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 01:29:35,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:29:35,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 01:29:35,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 01:29:35,308 INFO L87 Difference]: Start difference. First operand 41597 states and 54600 transitions. Second operand has 46 states, 45 states have (on average 17.266666666666666) internal successors, (777), 40 states have internal predecessors, (777), 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 01:29:47,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:29:47,536 INFO L93 Difference]: Finished difference Result 135115 states and 181359 transitions. [2023-11-29 01:29:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-29 01:29:47,537 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 17.266666666666666) internal successors, (777), 40 states have internal predecessors, (777), 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 688 [2023-11-29 01:29:47,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:29:47,705 INFO L225 Difference]: With dead ends: 135115 [2023-11-29 01:29:47,705 INFO L226 Difference]: Without dead ends: 135114 [2023-11-29 01:29:47,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1441 GetRequests, 1347 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2148 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2663, Invalid=6457, Unknown=0, NotChecked=0, Total=9120 [2023-11-29 01:29:47,721 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 16348 mSDsluCounter, 12635 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16364 SdHoareTripleChecker+Valid, 13083 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:29:47,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16364 Valid, 13083 Invalid, 2047 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [932 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:29:47,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135114 states. [2023-11-29 01:29:51,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135114 to 42983. [2023-11-29 01:29:51,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42983 states, 41909 states have (on average 1.3026318929108307) internal successors, (54592), 41969 states have internal predecessors, (54592), 877 states have call successors, (877), 215 states have call predecessors, (877), 193 states have return successors, (879), 798 states have call predecessors, (879), 877 states have call successors, (879) [2023-11-29 01:29:51,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42983 states to 42983 states and 56348 transitions. [2023-11-29 01:29:51,144 INFO L78 Accepts]: Start accepts. Automaton has 42983 states and 56348 transitions. Word has length 688 [2023-11-29 01:29:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:29:51,144 INFO L495 AbstractCegarLoop]: Abstraction has 42983 states and 56348 transitions. [2023-11-29 01:29:51,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 17.266666666666666) internal successors, (777), 40 states have internal predecessors, (777), 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 01:29:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 42983 states and 56348 transitions. [2023-11-29 01:29:51,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2023-11-29 01:29:51,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:29:51,161 INFO L195 NwaCegarLoop]: trace histogram [166, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:29:51,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-29 01:29:51,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:29:51,361 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:29:51,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:29:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash -240742278, now seen corresponding path program 2 times [2023-11-29 01:29:51,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:29:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376480474] [2023-11-29 01:29:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:29:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:29:51,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:29:51,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6032314] [2023-11-29 01:29:51,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:29:51,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:29:51,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:29:51,626 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:29:51,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-29 01:29:53,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:29:53,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:29:53,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:29:53,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:29:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 16495 backedges. 3868 proven. 0 refuted. 0 times theorem prover too weak. 12627 trivial. 0 not checked. [2023-11-29 01:29:53,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:29:53,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:29:53,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376480474] [2023-11-29 01:29:53,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:29:53,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6032314] [2023-11-29 01:29:53,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6032314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:29:53,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:29:53,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:29:53,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574895609] [2023-11-29 01:29:53,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:29:53,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:29:53,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:29:53,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:29:53,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:29:53,609 INFO L87 Difference]: Start difference. First operand 42983 states and 56348 transitions. Second operand has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 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 01:29:57,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:29:57,140 INFO L93 Difference]: Finished difference Result 86417 states and 113503 transitions. [2023-11-29 01:29:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:29:57,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 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 716 [2023-11-29 01:29:57,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:29:57,193 INFO L225 Difference]: With dead ends: 86417 [2023-11-29 01:29:57,193 INFO L226 Difference]: Without dead ends: 43823 [2023-11-29 01:29:57,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 711 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 01:29:57,220 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 12 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:29:57,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2063 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:29:57,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43823 states. [2023-11-29 01:30:00,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43823 to 42983. [2023-11-29 01:30:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42983 states, 41909 states have (on average 1.3026318929108307) internal successors, (54592), 41969 states have internal predecessors, (54592), 877 states have call successors, (877), 215 states have call predecessors, (877), 193 states have return successors, (879), 798 states have call predecessors, (879), 877 states have call successors, (879) [2023-11-29 01:30:00,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42983 states to 42983 states and 56348 transitions. [2023-11-29 01:30:00,235 INFO L78 Accepts]: Start accepts. Automaton has 42983 states and 56348 transitions. Word has length 716 [2023-11-29 01:30:00,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:00,236 INFO L495 AbstractCegarLoop]: Abstraction has 42983 states and 56348 transitions. [2023-11-29 01:30:00,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 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 01:30:00,236 INFO L276 IsEmpty]: Start isEmpty. Operand 42983 states and 56348 transitions. [2023-11-29 01:30:00,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2023-11-29 01:30:00,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:00,252 INFO L195 NwaCegarLoop]: trace histogram [166, 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, 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 01:30:00,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-29 01:30:00,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:30:00,453 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:30:00,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:00,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1368396662, now seen corresponding path program 1 times [2023-11-29 01:30:00,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:00,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79825231] [2023-11-29 01:30:00,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:00,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:00,762 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:30:00,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274625148] [2023-11-29 01:30:00,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:00,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:30:00,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:30:00,764 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:30:00,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-29 01:30:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:03,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 6017 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 01:30:03,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:30:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16501 backedges. 0 proven. 921 refuted. 0 times theorem prover too weak. 15580 trivial. 0 not checked. [2023-11-29 01:30:04,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:30:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 16501 backedges. 0 proven. 14088 refuted. 0 times theorem prover too weak. 2413 trivial. 0 not checked. [2023-11-29 01:30:06,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:06,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79825231] [2023-11-29 01:30:06,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:30:06,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274625148] [2023-11-29 01:30:06,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274625148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:30:06,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:30:06,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 32] total 45 [2023-11-29 01:30:06,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470850109] [2023-11-29 01:30:06,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:30:06,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 01:30:06,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:06,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 01:30:06,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=1360, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 01:30:06,134 INFO L87 Difference]: Start difference. First operand 42983 states and 56348 transitions. Second operand has 46 states, 45 states have (on average 20.244444444444444) internal successors, (911), 46 states have internal predecessors, (911), 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 01:30:36,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:30:36,474 INFO L93 Difference]: Finished difference Result 329880 states and 441675 transitions. [2023-11-29 01:30:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-29 01:30:36,475 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 20.244444444444444) internal successors, (911), 46 states have internal predecessors, (911), 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 716 [2023-11-29 01:30:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:30:36,929 INFO L225 Difference]: With dead ends: 329880 [2023-11-29 01:30:36,930 INFO L226 Difference]: Without dead ends: 329877 [2023-11-29 01:30:36,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1495 GetRequests, 1407 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 01:30:36,963 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 38756 mSDsluCounter, 13362 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 1744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38848 SdHoareTripleChecker+Valid, 13803 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1744 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:30:36,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38848 Valid, 13803 Invalid, 2728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1744 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:30:37,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329877 states. [2023-11-29 01:30:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329877 to 82458. [2023-11-29 01:30:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82458 states, 79840 states have (on average 1.2748496993987977) internal successors, (101784), 79923 states have internal predecessors, (101784), 1891 states have call successors, (1891), 771 states have call predecessors, (1891), 723 states have return successors, (1897), 1763 states have call predecessors, (1897), 1891 states have call successors, (1897) [2023-11-29 01:30:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82458 states to 82458 states and 105572 transitions. [2023-11-29 01:30:45,785 INFO L78 Accepts]: Start accepts. Automaton has 82458 states and 105572 transitions. Word has length 716 [2023-11-29 01:30:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:30:45,786 INFO L495 AbstractCegarLoop]: Abstraction has 82458 states and 105572 transitions. [2023-11-29 01:30:45,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 20.244444444444444) internal successors, (911), 46 states have internal predecessors, (911), 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 01:30:45,786 INFO L276 IsEmpty]: Start isEmpty. Operand 82458 states and 105572 transitions. [2023-11-29 01:30:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2023-11-29 01:30:45,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:45,815 INFO L195 NwaCegarLoop]: trace histogram [48, 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, 7, 7, 7, 6, 6, 6, 6, 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, 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] [2023-11-29 01:30:45,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-29 01:30:46,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:30:46,016 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:30:46,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:46,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1495083270, now seen corresponding path program 1 times [2023-11-29 01:30:46,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:46,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12456467] [2023-11-29 01:30:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:46,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:46,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:30:46,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115454063] [2023-11-29 01:30:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:46,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:30:46,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:30:46,251 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:30:46,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-29 01:30:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:30:48,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 4459 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 01:30:48,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:30:48,896 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 01:30:49,184 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 01:30:49,291 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 01:30:49,414 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 01:30:49,523 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 01:30:49,643 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 01:30:49,777 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 01:30:49,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 01:30:49,919 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 01:30:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 0 proven. 1724 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2023-11-29 01:30:49,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:30:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3048 backedges. 0 proven. 1724 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2023-11-29 01:30:50,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:30:50,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12456467] [2023-11-29 01:30:50,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:30:50,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115454063] [2023-11-29 01:30:50,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115454063] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:30:50,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:30:50,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2023-11-29 01:30:50,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247499519] [2023-11-29 01:30:50,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:30:50,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:30:50,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:30:50,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:30:50,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=579, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:30:50,900 INFO L87 Difference]: Start difference. First operand 82458 states and 105572 transitions. Second operand has 29 states, 29 states have (on average 31.96551724137931) internal successors, (927), 29 states have internal predecessors, (927), 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 01:31:01,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:01,983 INFO L93 Difference]: Finished difference Result 176463 states and 230157 transitions. [2023-11-29 01:31:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 01:31:01,984 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 31.96551724137931) internal successors, (927), 29 states have internal predecessors, (927), 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 868 [2023-11-29 01:31:01,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:02,226 INFO L225 Difference]: With dead ends: 176463 [2023-11-29 01:31:02,226 INFO L226 Difference]: Without dead ends: 159456 [2023-11-29 01:31:02,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1746 GetRequests, 1694 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 01:31:02,251 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2436 mSDsluCounter, 5639 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 6085 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:02,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2498 Valid, 6085 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:31:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159456 states. [2023-11-29 01:31:12,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159456 to 135194. [2023-11-29 01:31:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135194 states, 130720 states have (on average 1.2793298653610772) internal successors, (167234), 130888 states have internal predecessors, (167234), 3747 states have call successors, (3747), 771 states have call predecessors, (3747), 723 states have return successors, (3763), 3534 states have call predecessors, (3763), 3747 states have call successors, (3763) [2023-11-29 01:31:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135194 states to 135194 states and 174744 transitions. [2023-11-29 01:31:12,605 INFO L78 Accepts]: Start accepts. Automaton has 135194 states and 174744 transitions. Word has length 868 [2023-11-29 01:31:12,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:12,606 INFO L495 AbstractCegarLoop]: Abstraction has 135194 states and 174744 transitions. [2023-11-29 01:31:12,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 31.96551724137931) internal successors, (927), 29 states have internal predecessors, (927), 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 01:31:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 135194 states and 174744 transitions. [2023-11-29 01:31:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2023-11-29 01:31:12,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:12,688 INFO L195 NwaCegarLoop]: trace histogram [48, 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, 9, 9, 9, 9, 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, 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] [2023-11-29 01:31:12,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-29 01:31:12,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:12,888 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:31:12,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:12,889 INFO L85 PathProgramCache]: Analyzing trace with hash -823926510, now seen corresponding path program 2 times [2023-11-29 01:31:12,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:12,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305758739] [2023-11-29 01:31:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:12,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:13,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:31:13,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966282623] [2023-11-29 01:31:13,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:31:13,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:13,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:13,366 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:13,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-29 01:31:16,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:31:16,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:31:16,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:31:16,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 4938 trivial. 0 not checked. [2023-11-29 01:31:16,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:16,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:16,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305758739] [2023-11-29 01:31:16,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:31:16,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966282623] [2023-11-29 01:31:16,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966282623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:16,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:16,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:31:16,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110026138] [2023-11-29 01:31:16,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:16,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:31:16,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:31:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:31:16,288 INFO L87 Difference]: Start difference. First operand 135194 states and 174744 transitions. Second operand has 8 states, 8 states have (on average 37.625) internal successors, (301), 8 states have internal predecessors, (301), 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 01:31:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:25,487 INFO L93 Difference]: Finished difference Result 149447 states and 194660 transitions. [2023-11-29 01:31:25,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:31:25,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 37.625) internal successors, (301), 8 states have internal predecessors, (301), 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 1114 [2023-11-29 01:31:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:25,673 INFO L225 Difference]: With dead ends: 149447 [2023-11-29 01:31:25,673 INFO L226 Difference]: Without dead ends: 136268 [2023-11-29 01:31:25,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 1107 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 01:31:25,693 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 23 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:25,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2320 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:31:25,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136268 states. [2023-11-29 01:31:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136268 to 135656. [2023-11-29 01:31:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135656 states, 131182 states have (on average 1.2793523501699928) internal successors, (167828), 131350 states have internal predecessors, (167828), 3747 states have call successors, (3747), 771 states have call predecessors, (3747), 723 states have return successors, (3763), 3534 states have call predecessors, (3763), 3747 states have call successors, (3763) [2023-11-29 01:31:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135656 states to 135656 states and 175338 transitions. [2023-11-29 01:31:36,312 INFO L78 Accepts]: Start accepts. Automaton has 135656 states and 175338 transitions. Word has length 1114 [2023-11-29 01:31:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:36,313 INFO L495 AbstractCegarLoop]: Abstraction has 135656 states and 175338 transitions. [2023-11-29 01:31:36,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 37.625) internal successors, (301), 8 states have internal predecessors, (301), 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 01:31:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 135656 states and 175338 transitions. [2023-11-29 01:31:36,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1116 [2023-11-29 01:31:36,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:36,403 INFO L195 NwaCegarLoop]: trace histogram [48, 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, 9, 9, 9, 9, 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, 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] [2023-11-29 01:31:36,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-11-29 01:31:36,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:36,604 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:31:36,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash 428062528, now seen corresponding path program 1 times [2023-11-29 01:31:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335490203] [2023-11-29 01:31:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:36,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:31:36,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643192598] [2023-11-29 01:31:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:36,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:36,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:36,921 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:36,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-29 01:31:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:40,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 5594 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:31:40,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:40,130 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 01:31:40,328 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 17 treesize of output 9 [2023-11-29 01:31:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 4933 trivial. 0 not checked. [2023-11-29 01:31:40,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:40,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:40,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335490203] [2023-11-29 01:31:40,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:31:40,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643192598] [2023-11-29 01:31:40,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643192598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:40,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:40,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:31:40,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908242385] [2023-11-29 01:31:40,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:40,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:31:40,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:40,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:31:40,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:31:40,343 INFO L87 Difference]: Start difference. First operand 135656 states and 175338 transitions. Second operand has 6 states, 5 states have (on average 61.2) internal successors, (306), 6 states have internal predecessors, (306), 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 01:31:44,439 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 01:31:48,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:31:52,486 WARN L539 Checker$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 01:31:56,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:32:00,560 WARN L539 Checker$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 01:32:04,591 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 01:32:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:13,765 INFO L93 Difference]: Finished difference Result 135656 states and 175338 transitions. [2023-11-29 01:32:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:32:13,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 61.2) internal successors, (306), 6 states have internal predecessors, (306), 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 1115 [2023-11-29 01:32:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:13,964 INFO L225 Difference]: With dead ends: 135656 [2023-11-29 01:32:13,964 INFO L226 Difference]: Without dead ends: 135618 [2023-11-29 01:32:13,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1116 GetRequests, 1108 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:32:13,989 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 704 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 11 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:13,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1112 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 80 Invalid, 6 Unknown, 0 Unchecked, 24.3s Time] [2023-11-29 01:32:14,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135618 states. [2023-11-29 01:32:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135618 to 110283. [2023-11-29 01:32:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110283 states, 105819 states have (on average 1.2700176716846692) internal successors, (134392), 105992 states have internal predecessors, (134392), 3742 states have call successors, (3742), 767 states have call predecessors, (3742), 719 states have return successors, (3758), 3523 states have call predecessors, (3758), 3742 states have call successors, (3758) [2023-11-29 01:32:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110283 states to 110283 states and 141892 transitions. [2023-11-29 01:32:23,420 INFO L78 Accepts]: Start accepts. Automaton has 110283 states and 141892 transitions. Word has length 1115 [2023-11-29 01:32:23,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:23,421 INFO L495 AbstractCegarLoop]: Abstraction has 110283 states and 141892 transitions. [2023-11-29 01:32:23,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 61.2) internal successors, (306), 6 states have internal predecessors, (306), 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 01:32:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 110283 states and 141892 transitions. [2023-11-29 01:32:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2023-11-29 01:32:23,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:23,554 INFO L195 NwaCegarLoop]: trace histogram [48, 23, 23, 23, 23, 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, 10, 10, 10, 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 01:32:23,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-11-29 01:32:23,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-11-29 01:32:23,755 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:32:23,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:23,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1240630996, now seen corresponding path program 1 times [2023-11-29 01:32:23,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:23,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048281201] [2023-11-29 01:32:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:23,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:24,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:32:24,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946198953] [2023-11-29 01:32:24,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:24,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:24,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:24,123 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:24,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-29 01:32:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:27,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 6248 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:32:27,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7347 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 4927 trivial. 0 not checked. [2023-11-29 01:32:29,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:32:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7347 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 4927 trivial. 0 not checked. [2023-11-29 01:32:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048281201] [2023-11-29 01:32:31,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:32:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946198953] [2023-11-29 01:32:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946198953] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:32:31,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:32:31,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 47 [2023-11-29 01:32:31,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164532885] [2023-11-29 01:32:31,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:32:31,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 01:32:31,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:31,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 01:32:31,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:32:31,141 INFO L87 Difference]: Start difference. First operand 110283 states and 141892 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 01:32:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:45,680 INFO L93 Difference]: Finished difference Result 115396 states and 148900 transitions. [2023-11-29 01:32:45,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 01:32:45,681 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 1201 [2023-11-29 01:32:45,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:45,906 INFO L225 Difference]: With dead ends: 115396 [2023-11-29 01:32:45,906 INFO L226 Difference]: Without dead ends: 115395 [2023-11-29 01:32:45,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2400 GetRequests, 2354 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:32:45,925 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 37980 mSDsluCounter, 10902 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37980 SdHoareTripleChecker+Valid, 11361 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:45,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37980 Valid, 11361 Invalid, 175 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:32:45,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115395 states. [2023-11-29 01:32:55,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115395 to 115395. [2023-11-29 01:32:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115395 states, 110931 states have (on average 1.2744498832607658) internal successors, (141376), 111104 states have internal predecessors, (141376), 3742 states have call successors, (3742), 767 states have call predecessors, (3742), 719 states have return successors, (3758), 3523 states have call predecessors, (3758), 3742 states have call successors, (3758) [2023-11-29 01:32:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115395 states to 115395 states and 148876 transitions. [2023-11-29 01:32:55,582 INFO L78 Accepts]: Start accepts. Automaton has 115395 states and 148876 transitions. Word has length 1201 [2023-11-29 01:32:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:55,583 INFO L495 AbstractCegarLoop]: Abstraction has 115395 states and 148876 transitions. [2023-11-29 01:32:55,583 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 01:32:55,583 INFO L276 IsEmpty]: Start isEmpty. Operand 115395 states and 148876 transitions. [2023-11-29 01:32:55,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1337 [2023-11-29 01:32:55,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:55,707 INFO L195 NwaCegarLoop]: trace histogram [384, 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, 8, 8, 8, 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] [2023-11-29 01:32:55,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-11-29 01:32:55,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:55,908 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:32:55,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:55,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1705594737, now seen corresponding path program 1 times [2023-11-29 01:32:55,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:55,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124029291] [2023-11-29 01:32:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:55,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:56,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:32:56,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328224521] [2023-11-29 01:32:56,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:56,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:56,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:56,393 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:56,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-29 01:33:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 11380 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-29 01:33:00,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 84119 backedges. 494 proven. 78046 refuted. 0 times theorem prover too weak. 5579 trivial. 0 not checked. [2023-11-29 01:33:02,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:33:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 84119 backedges. 494 proven. 2875 refuted. 0 times theorem prover too weak. 80750 trivial. 0 not checked. [2023-11-29 01:33:05,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:05,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124029291] [2023-11-29 01:33:05,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:33:05,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328224521] [2023-11-29 01:33:05,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328224521] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:33:05,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:33:05,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 64] total 85 [2023-11-29 01:33:05,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530932363] [2023-11-29 01:33:05,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:33:05,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-11-29 01:33:05,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:05,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-11-29 01:33:05,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1568, Invalid=5742, Unknown=0, NotChecked=0, Total=7310 [2023-11-29 01:33:05,682 INFO L87 Difference]: Start difference. First operand 115395 states and 148876 transitions. Second operand has 86 states, 85 states have (on average 18.36470588235294) internal successors, (1561), 72 states have internal predecessors, (1561), 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 01:34:03,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:34:03,719 INFO L93 Difference]: Finished difference Result 365246 states and 489585 transitions. [2023-11-29 01:34:03,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-11-29 01:34:03,719 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 18.36470588235294) internal successors, (1561), 72 states have internal predecessors, (1561), 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 1336 [2023-11-29 01:34:03,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:34:04,381 INFO L225 Difference]: With dead ends: 365246 [2023-11-29 01:34:04,381 INFO L226 Difference]: Without dead ends: 365237 [2023-11-29 01:34:04,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2793 GetRequests, 2619 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7792 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=8890, Invalid=21910, Unknown=0, NotChecked=0, Total=30800 [2023-11-29 01:34:04,425 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 51380 mSDsluCounter, 23089 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 2607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51416 SdHoareTripleChecker+Valid, 23525 SdHoareTripleChecker+Invalid, 4432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2607 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:34:04,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51416 Valid, 23525 Invalid, 4432 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2607 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 01:34:04,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365237 states. [2023-11-29 01:34:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365237 to 122305. [2023-11-29 01:34:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122305 states, 117549 states have (on average 1.275970021012514) internal successors, (149989), 117717 states have internal predecessors, (149989), 3927 states have call successors, (3927), 878 states have call predecessors, (3927), 826 states have return successors, (3967), 3709 states have call predecessors, (3967), 3927 states have call successors, (3967) [2023-11-29 01:34:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122305 states to 122305 states and 157883 transitions. [2023-11-29 01:34:16,417 INFO L78 Accepts]: Start accepts. Automaton has 122305 states and 157883 transitions. Word has length 1336 [2023-11-29 01:34:16,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:34:16,418 INFO L495 AbstractCegarLoop]: Abstraction has 122305 states and 157883 transitions. [2023-11-29 01:34:16,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 18.36470588235294) internal successors, (1561), 72 states have internal predecessors, (1561), 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 01:34:16,418 INFO L276 IsEmpty]: Start isEmpty. Operand 122305 states and 157883 transitions. [2023-11-29 01:34:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1442 [2023-11-29 01:34:16,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:34:16,539 INFO L195 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 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, 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 01:34:16,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-11-29 01:34:16,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:16,740 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-29 01:34:16,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:34:16,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1976065204, now seen corresponding path program 2 times [2023-11-29 01:34:16,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:34:16,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465508481] [2023-11-29 01:34:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:16,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:34:17,028 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:34:17,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463916494] [2023-11-29 01:34:17,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:34:17,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:17,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:34:17,029 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:34:17,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122dec5f-6b73-4321-b43b-d6d1560ea530/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-11-29 01:34:20,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:34:20,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:34:20,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:34:20,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:34:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 15507 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15507 trivial. 0 not checked. [2023-11-29 01:34:20,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:34:20,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:34:20,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465508481] [2023-11-29 01:34:20,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:34:20,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463916494] [2023-11-29 01:34:20,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463916494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:34:20,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:34:20,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:34:20,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086443242] [2023-11-29 01:34:20,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:34:20,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:34:20,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:34:20,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:34:20,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:34:20,613 INFO L87 Difference]: Start difference. First operand 122305 states and 157883 transitions. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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 01:34:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:34:31,426 INFO L93 Difference]: Finished difference Result 132487 states and 171866 transitions. [2023-11-29 01:34:31,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:34:31,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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 1441 [2023-11-29 01:34:31,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:34:31,598 INFO L225 Difference]: With dead ends: 132487 [2023-11-29 01:34:31,598 INFO L226 Difference]: Without dead ends: 122634 [2023-11-29 01:34:31,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1440 GetRequests, 1436 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 01:34:31,617 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 10 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:34:31,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1825 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:34:31,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122634 states.