./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e779827438904e8a0bb49f414cbe4d14072e556fff2389d3772808230457c73c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:14:36,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:14:36,659 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-12 02:14:36,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:14:36,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:14:36,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:14:36,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:14:36,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:14:36,719 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:14:36,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:14:36,727 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:14:36,728 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-12 02:14:36,728 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-12 02:14:36,730 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-12 02:14:36,731 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-12 02:14:36,731 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-12 02:14:36,732 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-12 02:14:36,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:14:36,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-12 02:14:36,734 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:14:36,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:14:36,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-12 02:14:36,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-12 02:14:36,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-12 02:14:36,736 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:14:36,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:14:36,737 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-12 02:14:36,737 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:14:36,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:14:36,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:14:36,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:14:36,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:14:36,740 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-12 02:14:36,740 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e779827438904e8a0bb49f414cbe4d14072e556fff2389d3772808230457c73c [2023-11-12 02:14:37,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:14:37,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:14:37,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:14:37,038 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:14:37,039 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:14:37,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i [2023-11-12 02:14:40,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:14:40,667 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:14:40,667 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/sv-benchmarks/c/termination-memory-alloca/fermat-alloca.i [2023-11-12 02:14:40,682 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/data/abae15df1/01cdc3c29c104064bd82f48b3d64cb41/FLAGa70e2b9f9 [2023-11-12 02:14:40,700 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/data/abae15df1/01cdc3c29c104064bd82f48b3d64cb41 [2023-11-12 02:14:40,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:14:40,705 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:14:40,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:14:40,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:14:40,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:14:40,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:40" (1/1) ... [2023-11-12 02:14:40,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd946e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:40, skipping insertion in model container [2023-11-12 02:14:40,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:14:40" (1/1) ... [2023-11-12 02:14:40,790 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:14:41,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:14:41,236 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:14:41,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:14:41,333 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:14:41,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41 WrapperNode [2023-11-12 02:14:41,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:14:41,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:14:41,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:14:41,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:14:41,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (1/1) ... [2023-11-12 02:14:41,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (1/1) ... [2023-11-12 02:14:41,407 INFO L138 Inliner]: procedures = 109, calls = 45, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 115 [2023-11-12 02:14:41,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:14:41,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:14:41,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:14:41,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:14:41,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (1/1) ... [2023-11-12 02:14:41,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (1/1) ... [2023-11-12 02:14:41,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (1/1) ... [2023-11-12 02:14:41,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (1/1) ... [2023-11-12 02:14:41,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (1/1) ... [2023-11-12 02:14:41,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (1/1) ... [2023-11-12 02:14:41,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (1/1) ... [2023-11-12 02:14:41,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (1/1) ... [2023-11-12 02:14:41,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:14:41,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:14:41,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:14:41,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:14:41,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (1/1) ... [2023-11-12 02:14:41,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:14:41,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:14:41,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:14:41,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-12 02:14:41,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:14:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:14:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:14:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:14:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:14:41,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:14:41,698 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:14:41,700 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:14:41,938 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:14:41,945 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:14:41,945 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:14:41,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:41 BoogieIcfgContainer [2023-11-12 02:14:41,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:14:41,949 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-12 02:14:41,949 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-12 02:14:41,953 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-12 02:14:41,954 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:14:41,955 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 02:14:40" (1/3) ... [2023-11-12 02:14:41,956 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ae4d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:14:41, skipping insertion in model container [2023-11-12 02:14:41,956 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:14:41,956 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:14:41" (2/3) ... [2023-11-12 02:14:41,957 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ae4d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:14:41, skipping insertion in model container [2023-11-12 02:14:41,957 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:14:41,957 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:14:41" (3/3) ... [2023-11-12 02:14:41,962 INFO L332 chiAutomizerObserver]: Analyzing ICFG fermat-alloca.i [2023-11-12 02:14:42,028 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-12 02:14:42,029 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-12 02:14:42,029 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-12 02:14:42,029 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-12 02:14:42,029 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-12 02:14:42,030 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-12 02:14:42,030 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-12 02:14:42,030 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-12 02:14:42,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2023-11-12 02:14:42,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-12 02:14:42,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:14:42,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:14:42,064 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-12 02:14:42,065 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:14:42,066 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-12 02:14:42,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2023-11-12 02:14:42,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-12 02:14:42,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:14:42,070 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:14:42,070 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-12 02:14:42,070 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:14:42,079 INFO L748 eck$LassoCheckResult]: Stem: 12#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~malloc4#1.base, main_#t~malloc4#1.offset, main_#t~malloc5#1.base, main_#t~malloc5#1.offset, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~mem9#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~mem14#1, main_#t~mem15#1, main_#t~post16#1, main_#t~mem17#1, main_#t~mem18#1, main_#t~mem19#1, main_#t~post20#1, main_#t~mem21#1, main_#t~mem22#1, main_#t~mem23#1, main_#t~post24#1, main_#t~mem25#1, main_#t~mem26#1, main_~MAX~0#1.base, main_~MAX~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset, main_~c~0#1.base, main_~c~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~MAX~0#1.base, main_~MAX~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~a~0#1.base, main_~a~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call main_#t~malloc4#1.base, main_#t~malloc4#1.offset := #Ultimate.allocOnStack(4);main_~b~0#1.base, main_~b~0#1.offset := main_#t~malloc4#1.base, main_#t~malloc4#1.offset;call main_#t~malloc5#1.base, main_#t~malloc5#1.offset := #Ultimate.allocOnStack(4);main_~c~0#1.base, main_~c~0#1.offset := main_#t~malloc5#1.base, main_#t~malloc5#1.offset;call write~int(1000, main_~MAX~0#1.base, main_~MAX~0#1.offset, 4);call write~int(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call write~int(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call write~int(1, main_~c~0#1.base, main_~c~0#1.offset, 4); 6#L556-2true [2023-11-12 02:14:42,080 INFO L750 eck$LassoCheckResult]: Loop: 6#L556-2true assume !false;call main_#t~mem6#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem10#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem12#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem14#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4); 13#L557true assume !(main_#t~mem6#1 * main_#t~mem7#1 * main_#t~mem8#1 == main_#t~mem9#1 * main_#t~mem10#1 * main_#t~mem11#1 + main_#t~mem12#1 * main_#t~mem13#1 * main_#t~mem14#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~mem9#1;havoc main_#t~mem10#1;havoc main_#t~mem11#1;havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~mem14#1;call main_#t~mem15#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);main_#t~post16#1 := main_#t~mem15#1;call write~int(1 + main_#t~post16#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem15#1;havoc main_#t~post16#1;call main_#t~mem17#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem18#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 5#L561true assume main_#t~mem17#1 > main_#t~mem18#1;havoc main_#t~mem17#1;havoc main_#t~mem18#1;call write~int(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem19#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);main_#t~post20#1 := main_#t~mem19#1;call write~int(1 + main_#t~post20#1, main_~b~0#1.base, main_~b~0#1.offset, 4);havoc main_#t~mem19#1;havoc main_#t~post20#1; 7#L561-2true call main_#t~mem21#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem22#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 4#L565true assume main_#t~mem21#1 > main_#t~mem22#1;havoc main_#t~mem21#1;havoc main_#t~mem22#1;call write~int(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem23#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);main_#t~post24#1 := main_#t~mem23#1;call write~int(1 + main_#t~post24#1, main_~c~0#1.base, main_~c~0#1.offset, 4);havoc main_#t~mem23#1;havoc main_#t~post24#1; 10#L565-2true call main_#t~mem25#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem26#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 3#L569true assume !(main_#t~mem25#1 > main_#t~mem26#1);havoc main_#t~mem25#1;havoc main_#t~mem26#1; 6#L556-2true [2023-11-12 02:14:42,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:42,087 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-12 02:14:42,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13796914] [2023-11-12 02:14:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:42,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:14:42,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:14:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:14:42,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:14:42,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:42,457 INFO L85 PathProgramCache]: Analyzing trace with hash -903226603, now seen corresponding path program 1 times [2023-11-12 02:14:42,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:42,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909751954] [2023-11-12 02:14:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:42,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:42,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:14:42,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659087539] [2023-11-12 02:14:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:42,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:14:42,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:14:42,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:14:42,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:14:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:14:42,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:14:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:14:42,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:14:42,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:14:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash 643070227, now seen corresponding path program 1 times [2023-11-12 02:14:42,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:14:42,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639806433] [2023-11-12 02:14:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:42,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:14:42,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:14:42,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052082757] [2023-11-12 02:14:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:14:42,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:14:42,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:14:42,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:14:42,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:14:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:14:43,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-12 02:14:43,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:14:43,302 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-11-12 02:14:43,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:43,423 INFO L322 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2023-11-12 02:14:43,424 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 112 [2023-11-12 02:14:43,496 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:43,511 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:43,572 INFO L322 Elim1Store]: treesize reduction 36, result has 41.9 percent of original size [2023-11-12 02:14:43,574 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 113 treesize of output 119 [2023-11-12 02:14:43,602 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:43,681 INFO L322 Elim1Store]: treesize reduction 26, result has 59.4 percent of original size [2023-11-12 02:14:43,682 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 69 treesize of output 85 [2023-11-12 02:14:43,782 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 02:14:43,830 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2023-11-12 02:14:43,876 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 02:14:43,931 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-11-12 02:14:43,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 47 [2023-11-12 02:14:44,002 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,003 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,010 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,011 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,016 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 72 [2023-11-12 02:14:44,039 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,040 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 31 [2023-11-12 02:14:44,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 02:14:44,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,074 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-12 02:14:44,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,174 INFO L322 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2023-11-12 02:14:44,175 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 115 [2023-11-12 02:14:44,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,221 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,229 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,235 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 60 [2023-11-12 02:14:44,246 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,260 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2023-11-12 02:14:44,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-12 02:14:44,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,285 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 1 [2023-11-12 02:14:44,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 142 [2023-11-12 02:14:44,376 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2023-11-12 02:14:44,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,401 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 23 [2023-11-12 02:14:44,415 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 02:14:44,427 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-12 02:14:44,441 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,450 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,453 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 56 [2023-11-12 02:14:44,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,463 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:44,473 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 38 [2023-11-12 02:14:44,484 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 13 [2023-11-12 02:14:44,499 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2023-11-12 02:14:44,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,603 INFO L322 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-11-12 02:14:44,604 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 127 [2023-11-12 02:14:44,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:44,744 INFO L322 Elim1Store]: treesize reduction 42, result has 41.7 percent of original size [2023-11-12 02:14:44,744 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 83 treesize of output 163 [2023-11-12 02:14:44,758 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-12 02:14:44,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2023-11-12 02:14:45,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:45,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:45,045 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:45,113 INFO L322 Elim1Store]: treesize reduction 42, result has 41.7 percent of original size [2023-11-12 02:14:45,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 141 [2023-11-12 02:14:45,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2023-11-12 02:14:45,516 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:45,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:45,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 138 [2023-11-12 02:14:45,560 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 34 treesize of output 31 [2023-11-12 02:14:45,621 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:45,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:45,624 WARN L193 Elim1Store]: Array PQE input equivalent to false [2023-11-12 02:14:47,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:47,860 INFO L322 Elim1Store]: treesize reduction 67, result has 43.7 percent of original size [2023-11-12 02:14:47,862 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 2267 treesize of output 2117 [2023-11-12 02:14:48,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 419 [2023-11-12 02:14:48,115 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 413 treesize of output 416 [2023-11-12 02:14:48,197 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 410 treesize of output 413 [2023-11-12 02:14:48,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2023-11-12 02:14:48,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-11-12 02:14:48,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:48,496 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 1 [2023-11-12 02:14:48,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2023-11-12 02:14:48,620 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2023-11-12 02:14:48,645 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 19 [2023-11-12 02:14:48,679 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-11-12 02:14:48,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-11-12 02:14:48,775 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 02:14:48,776 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:14:48,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:14:48,812 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:14:48,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:14:48,897 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:14:49,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2023-11-12 02:14:49,533 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 66 treesize of output 57 [2023-11-12 02:14:49,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 93 treesize of output 80 [2023-11-12 02:14:50,446 INFO L322 Elim1Store]: treesize reduction 197, result has 23.3 percent of original size [2023-11-12 02:14:50,447 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 263 treesize of output 213 [2023-11-12 02:14:51,063 INFO L322 Elim1Store]: treesize reduction 27, result has 51.8 percent of original size [2023-11-12 02:14:51,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 104 [2023-11-12 02:14:51,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2023-11-12 02:14:51,670 INFO L322 Elim1Store]: treesize reduction 504, result has 0.2 percent of original size [2023-11-12 02:14:51,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 168 treesize of output 1 [2023-11-12 02:14:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:14:51,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:14:51,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:14:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639806433] [2023-11-12 02:14:51,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:14:51,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052082757] [2023-11-12 02:14:51,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052082757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:14:51,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:14:51,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:14:51,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534140011] [2023-11-12 02:14:51,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:04,691 WARN L293 SmtUtils]: Spent 13.00s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-12 02:15:06,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:06,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:15:06,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2023-11-12 02:15:06,382 INFO L87 Difference]: Start difference. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-11-12 02:15:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:06,868 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-11-12 02:15:06,870 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 32 transitions. [2023-11-12 02:15:06,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-12 02:15:06,876 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 21 transitions. [2023-11-12 02:15:06,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2023-11-12 02:15:06,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-12 02:15:06,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2023-11-12 02:15:06,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:15:06,880 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-11-12 02:15:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2023-11-12 02:15:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2023-11-12 02:15:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 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) [2023-11-12 02:15:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-11-12 02:15:06,912 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-11-12 02:15:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:15:06,918 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-11-12 02:15:06,919 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-12 02:15:06,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2023-11-12 02:15:06,920 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-12 02:15:06,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:15:06,920 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:15:06,921 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-12 02:15:06,921 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:06,921 INFO L748 eck$LassoCheckResult]: Stem: 85#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 86#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~malloc4#1.base, main_#t~malloc4#1.offset, main_#t~malloc5#1.base, main_#t~malloc5#1.offset, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~mem9#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~mem12#1, main_#t~mem13#1, main_#t~mem14#1, main_#t~mem15#1, main_#t~post16#1, main_#t~mem17#1, main_#t~mem18#1, main_#t~mem19#1, main_#t~post20#1, main_#t~mem21#1, main_#t~mem22#1, main_#t~mem23#1, main_#t~post24#1, main_#t~mem25#1, main_#t~mem26#1, main_~MAX~0#1.base, main_~MAX~0#1.offset, main_~a~0#1.base, main_~a~0#1.offset, main_~b~0#1.base, main_~b~0#1.offset, main_~c~0#1.base, main_~c~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~MAX~0#1.base, main_~MAX~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~a~0#1.base, main_~a~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call main_#t~malloc4#1.base, main_#t~malloc4#1.offset := #Ultimate.allocOnStack(4);main_~b~0#1.base, main_~b~0#1.offset := main_#t~malloc4#1.base, main_#t~malloc4#1.offset;call main_#t~malloc5#1.base, main_#t~malloc5#1.offset := #Ultimate.allocOnStack(4);main_~c~0#1.base, main_~c~0#1.offset := main_#t~malloc5#1.base, main_#t~malloc5#1.offset;call write~int(1000, main_~MAX~0#1.base, main_~MAX~0#1.offset, 4);call write~int(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call write~int(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call write~int(1, main_~c~0#1.base, main_~c~0#1.offset, 4); 88#L556-2 assume !false;call main_#t~mem6#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem10#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem12#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem14#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4); 89#L557 assume !(main_#t~mem6#1 * main_#t~mem7#1 * main_#t~mem8#1 == main_#t~mem9#1 * main_#t~mem10#1 * main_#t~mem11#1 + main_#t~mem12#1 * main_#t~mem13#1 * main_#t~mem14#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~mem9#1;havoc main_#t~mem10#1;havoc main_#t~mem11#1;havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~mem14#1;call main_#t~mem15#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);main_#t~post16#1 := main_#t~mem15#1;call write~int(1 + main_#t~post16#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem15#1;havoc main_#t~post16#1;call main_#t~mem17#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem18#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 80#L561 assume !(main_#t~mem17#1 > main_#t~mem18#1);havoc main_#t~mem17#1;havoc main_#t~mem18#1; 82#L561-2 [2023-11-12 02:15:06,922 INFO L750 eck$LassoCheckResult]: Loop: 82#L561-2 call main_#t~mem21#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem22#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 87#L565 assume main_#t~mem21#1 > main_#t~mem22#1;havoc main_#t~mem21#1;havoc main_#t~mem22#1;call write~int(1, main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem23#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);main_#t~post24#1 := main_#t~mem23#1;call write~int(1 + main_#t~post24#1, main_~c~0#1.base, main_~c~0#1.offset, 4);havoc main_#t~mem23#1;havoc main_#t~post24#1; 79#L565-2 call main_#t~mem25#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem26#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 76#L569 assume !(main_#t~mem25#1 > main_#t~mem26#1);havoc main_#t~mem25#1;havoc main_#t~mem26#1; 77#L556-2 assume !false;call main_#t~mem6#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem7#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem9#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem10#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem11#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);call main_#t~mem12#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem13#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4);call main_#t~mem14#1 := read~int(main_~c~0#1.base, main_~c~0#1.offset, 4); 83#L557 assume !(main_#t~mem6#1 * main_#t~mem7#1 * main_#t~mem8#1 == main_#t~mem9#1 * main_#t~mem10#1 * main_#t~mem11#1 + main_#t~mem12#1 * main_#t~mem13#1 * main_#t~mem14#1);havoc main_#t~mem6#1;havoc main_#t~mem7#1;havoc main_#t~mem8#1;havoc main_#t~mem9#1;havoc main_#t~mem10#1;havoc main_#t~mem11#1;havoc main_#t~mem12#1;havoc main_#t~mem13#1;havoc main_#t~mem14#1;call main_#t~mem15#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);main_#t~post16#1 := main_#t~mem15#1;call write~int(1 + main_#t~post16#1, main_~a~0#1.base, main_~a~0#1.offset, 4);havoc main_#t~mem15#1;havoc main_#t~post16#1;call main_#t~mem17#1 := read~int(main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem18#1 := read~int(main_~MAX~0#1.base, main_~MAX~0#1.offset, 4); 84#L561 assume main_#t~mem17#1 > main_#t~mem18#1;havoc main_#t~mem17#1;havoc main_#t~mem18#1;call write~int(1, main_~a~0#1.base, main_~a~0#1.offset, 4);call main_#t~mem19#1 := read~int(main_~b~0#1.base, main_~b~0#1.offset, 4);main_#t~post20#1 := main_#t~mem19#1;call write~int(1 + main_#t~post20#1, main_~b~0#1.base, main_~b~0#1.offset, 4);havoc main_#t~mem19#1;havoc main_#t~post20#1; 82#L561-2 [2023-11-12 02:15:06,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash 28699821, now seen corresponding path program 1 times [2023-11-12 02:15:06,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:06,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91195448] [2023-11-12 02:15:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:06,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:06,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:15:06,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018575081] [2023-11-12 02:15:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:06,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:06,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:06,956 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:06,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:15:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:15:07,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:15:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:15:07,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:15:07,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:07,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1453675845, now seen corresponding path program 2 times [2023-11-12 02:15:07,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:07,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749103407] [2023-11-12 02:15:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:07,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:07,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:15:07,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617692853] [2023-11-12 02:15:07,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:15:07,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:07,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:07,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:07,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:15:07,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:15:07,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-12 02:15:07,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:15:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:15:07,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:15:07,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:07,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1341656857, now seen corresponding path program 1 times [2023-11-12 02:15:07,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:07,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319043789] [2023-11-12 02:15:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:07,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:07,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:15:07,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652795409] [2023-11-12 02:15:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:07,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:15:07,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:07,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:15:07,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b334e647-a387-4a59-a2de-d1013aa4a2a6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:15:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:07,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-12 02:15:07,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:15:07,545 INFO L322 Elim1Store]: treesize reduction 107, result has 25.7 percent of original size [2023-11-12 02:15:07,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 131 [2023-11-12 02:15:07,560 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 71 treesize of output 64 [2023-11-12 02:15:07,646 INFO L322 Elim1Store]: treesize reduction 73, result has 32.4 percent of original size [2023-11-12 02:15:07,646 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 809 treesize of output 805 [2023-11-12 02:15:07,688 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-12 02:15:07,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 144 [2023-11-12 02:15:07,757 INFO L322 Elim1Store]: treesize reduction 39, result has 39.1 percent of original size [2023-11-12 02:15:07,758 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 59 treesize of output 57 [2023-11-12 02:15:08,027 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 02:15:08,490 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 02:15:08,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 02:15:08,568 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 02:15:08,616 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-12 02:15:08,678 INFO L322 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-12 02:15:08,679 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 38 [2023-11-12 02:15:08,839 INFO L322 Elim1Store]: treesize reduction 111, result has 22.9 percent of original size [2023-11-12 02:15:08,840 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 137 [2023-11-12 02:15:08,885 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 33 treesize of output 46 [2023-11-12 02:15:09,454 INFO L322 Elim1Store]: treesize reduction 115, result has 20.1 percent of original size [2023-11-12 02:15:09,454 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 133 [2023-11-12 02:15:09,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:15:09,490 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 70 [2023-11-12 02:15:09,678 INFO L322 Elim1Store]: treesize reduction 115, result has 20.1 percent of original size [2023-11-12 02:15:09,679 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 133 [2023-11-12 02:15:09,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 284 treesize of output 250 [2023-11-12 02:15:09,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 502 treesize of output 432 [2023-11-12 02:15:09,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 606 treesize of output 530 [2023-11-12 02:15:10,050 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 316 treesize of output 276 [2023-11-12 02:15:10,157 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 350 treesize of output 304 [2023-11-12 02:15:10,250 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 304 treesize of output 267