./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b 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_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 32bit --witnessprinter.graph.data.programhash 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:33:04,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:33:04,342 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-06 22:33:04,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:33:04,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:33:04,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:33:04,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:33:04,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:33:04,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:33:04,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:33:04,378 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:33:04,379 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:33:04,380 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:33:04,380 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:33:04,381 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:33:04,381 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:33:04,382 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:33:04,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:33:04,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:33:04,384 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:33:04,384 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:33:04,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:33:04,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:33:04,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:33:04,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:33:04,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:33:04,387 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:33:04,387 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:33:04,388 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:33:04,388 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:33:04,389 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:33:04,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:33:04,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:33:04,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:33:04,390 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:33:04,391 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:33:04,391 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_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12c3feea735c5360de013afbcf9aaa3880d39f75cbb7661493cccf003151044d [2023-11-06 22:33:04,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:33:04,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:33:04,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:33:04,770 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:33:04,771 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:33:04,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/locks/test_locks_12.c [2023-11-06 22:33:07,853 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:33:08,066 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:33:08,067 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/sv-benchmarks/c/locks/test_locks_12.c [2023-11-06 22:33:08,085 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/data/3deb47edd/1f9a7539efd0434b9205455b6c668dc3/FLAG295ebd1da [2023-11-06 22:33:08,103 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/data/3deb47edd/1f9a7539efd0434b9205455b6c668dc3 [2023-11-06 22:33:08,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:33:08,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:33:08,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:33:08,119 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:33:08,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:33:08,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da4b0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08, skipping insertion in model container [2023-11-06 22:33:08,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,166 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:33:08,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:33:08,363 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:33:08,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:33:08,405 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:33:08,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08 WrapperNode [2023-11-06 22:33:08,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:33:08,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:33:08,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:33:08,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:33:08,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,447 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 160 [2023-11-06 22:33:08,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:33:08,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:33:08,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:33:08,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:33:08,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,460 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,460 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:33:08,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:33:08,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:33:08,477 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:33:08,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (1/1) ... [2023-11-06 22:33:08,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:33:08,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:08,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:33:08,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:33:08,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:33:08,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:33:08,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:33:08,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:33:08,640 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:33:08,642 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:33:08,911 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:33:08,919 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:33:08,919 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:33:08,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:08 BoogieIcfgContainer [2023-11-06 22:33:08,922 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:33:08,925 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:33:08,926 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:33:08,930 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:33:08,931 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:33:08,931 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:33:08" (1/3) ... [2023-11-06 22:33:08,934 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a2f0a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:33:08, skipping insertion in model container [2023-11-06 22:33:08,934 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:33:08,934 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:33:08" (2/3) ... [2023-11-06 22:33:08,935 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a2f0a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:33:08, skipping insertion in model container [2023-11-06 22:33:08,935 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:33:08,935 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:08" (3/3) ... [2023-11-06 22:33:08,936 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_12.c [2023-11-06 22:33:08,988 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:33:08,989 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:33:08,989 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:33:08,989 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:33:08,989 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:33:08,989 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:33:08,989 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:33:08,990 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:33:08,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 46 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 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) [2023-11-06 22:33:09,011 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2023-11-06 22:33:09,011 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:09,011 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:09,016 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:09,016 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:09,016 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:33:09,017 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 46 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 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) [2023-11-06 22:33:09,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2023-11-06 22:33:09,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:09,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:09,023 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:09,023 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:09,030 INFO L748 eck$LassoCheckResult]: Stem: 46#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1; 32#L183-1true [2023-11-06 22:33:09,031 INFO L750 eck$LassoCheckResult]: Loop: 32#L183-1true assume !false;havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1; 17#L49true assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0; 33#L78true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 14#L78-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 12#L82-1true assume !(0 != main_~p3~0#1); 8#L86-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 34#L90-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 11#L94-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 20#L98-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 31#L102-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 15#L106-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 25#L110-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 41#L114-1true assume !(0 != main_~p11~0#1); 30#L118-1true assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 13#L122-1true assume !(0 != main_~p1~0#1); 27#L128-1true assume !(0 != main_~p2~0#1); 4#L133-1true assume !(0 != main_~p3~0#1); 3#L138-1true assume !(0 != main_~p4~0#1); 26#L143-1true assume !(0 != main_~p5~0#1); 5#L148-1true assume !(0 != main_~p6~0#1); 22#L153-1true assume !(0 != main_~p7~0#1); 38#L158-1true assume !(0 != main_~p8~0#1); 24#L163-1true assume !(0 != main_~p9~0#1); 40#L168-1true assume !(0 != main_~p10~0#1); 18#L173-1true assume !(0 != main_~p11~0#1); 7#L178-1true assume !(0 != main_~p12~0#1); 32#L183-1true [2023-11-06 22:33:09,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:09,037 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 22:33:09,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:09,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794586020] [2023-11-06 22:33:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:09,126 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:09,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:09,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:09,157 INFO L85 PathProgramCache]: Analyzing trace with hash -819199544, now seen corresponding path program 1 times [2023-11-06 22:33:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:09,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290388113] [2023-11-06 22:33:09,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:09,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:09,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:09,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290388113] [2023-11-06 22:33:09,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290388113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:09,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:09,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:09,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367662677] [2023-11-06 22:33:09,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:09,312 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:33:09,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:09,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:09,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:09,348 INFO L87 Difference]: Start difference. First operand has 46 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 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 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-06 22:33:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:09,392 INFO L93 Difference]: Finished difference Result 85 states and 153 transitions. [2023-11-06 22:33:09,394 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 153 transitions. [2023-11-06 22:33:09,399 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2023-11-06 22:33:09,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 77 states and 123 transitions. [2023-11-06 22:33:09,406 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2023-11-06 22:33:09,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2023-11-06 22:33:09,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 123 transitions. [2023-11-06 22:33:09,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:09,409 INFO L218 hiAutomatonCegarLoop]: Abstraction has 77 states and 123 transitions. [2023-11-06 22:33:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 123 transitions. [2023-11-06 22:33:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-06 22:33:09,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 76 states have internal predecessors, (123), 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) [2023-11-06 22:33:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 123 transitions. [2023-11-06 22:33:09,449 INFO L240 hiAutomatonCegarLoop]: Abstraction has 77 states and 123 transitions. [2023-11-06 22:33:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:09,455 INFO L428 stractBuchiCegarLoop]: Abstraction has 77 states and 123 transitions. [2023-11-06 22:33:09,455 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 22:33:09,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 77 states and 123 transitions. [2023-11-06 22:33:09,458 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2023-11-06 22:33:09,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:09,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:09,459 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:09,459 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:09,460 INFO L748 eck$LassoCheckResult]: Stem: 183#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 151#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1; 152#L183-1 [2023-11-06 22:33:09,460 INFO L750 eck$LassoCheckResult]: Loop: 152#L183-1 assume !false;havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1; 166#L49 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0; 167#L78 assume !(0 != main_~p1~0#1); 194#L78-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 193#L82-1 assume !(0 != main_~p3~0#1); 192#L86-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 181#L90-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 157#L94-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 158#L98-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 170#L102-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 189#L106-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 188#L110-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 187#L114-1 assume !(0 != main_~p11~0#1); 186#L118-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 184#L122-1 assume !(0 != main_~p1~0#1); 185#L128-1 assume !(0 != main_~p2~0#1); 215#L133-1 assume !(0 != main_~p3~0#1); 213#L138-1 assume !(0 != main_~p4~0#1); 211#L143-1 assume !(0 != main_~p5~0#1); 209#L148-1 assume !(0 != main_~p6~0#1); 207#L153-1 assume !(0 != main_~p7~0#1); 205#L158-1 assume !(0 != main_~p8~0#1); 203#L163-1 assume !(0 != main_~p9~0#1); 201#L168-1 assume !(0 != main_~p10~0#1); 198#L173-1 assume !(0 != main_~p11~0#1); 197#L178-1 assume !(0 != main_~p12~0#1); 152#L183-1 [2023-11-06 22:33:09,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:09,461 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-06 22:33:09,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:09,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426520800] [2023-11-06 22:33:09,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:09,470 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:09,479 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:09,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:09,480 INFO L85 PathProgramCache]: Analyzing trace with hash -953213050, now seen corresponding path program 1 times [2023-11-06 22:33:09,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:09,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748954204] [2023-11-06 22:33:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:09,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:09,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:09,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748954204] [2023-11-06 22:33:09,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748954204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:09,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:09,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:09,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149596575] [2023-11-06 22:33:09,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:09,545 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:33:09,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:09,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:09,546 INFO L87 Difference]: Start difference. First operand 77 states and 123 transitions. cyclomatic complexity: 48 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-06 22:33:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:09,569 INFO L93 Difference]: Finished difference Result 150 states and 238 transitions. [2023-11-06 22:33:09,570 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 238 transitions. [2023-11-06 22:33:09,574 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 148 [2023-11-06 22:33:09,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 150 states and 238 transitions. [2023-11-06 22:33:09,577 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 150 [2023-11-06 22:33:09,578 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 150 [2023-11-06 22:33:09,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 238 transitions. [2023-11-06 22:33:09,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:09,581 INFO L218 hiAutomatonCegarLoop]: Abstraction has 150 states and 238 transitions. [2023-11-06 22:33:09,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 238 transitions. [2023-11-06 22:33:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-11-06 22:33:09,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.5866666666666667) internal successors, (238), 149 states have internal predecessors, (238), 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) [2023-11-06 22:33:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 238 transitions. [2023-11-06 22:33:09,598 INFO L240 hiAutomatonCegarLoop]: Abstraction has 150 states and 238 transitions. [2023-11-06 22:33:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:09,603 INFO L428 stractBuchiCegarLoop]: Abstraction has 150 states and 238 transitions. [2023-11-06 22:33:09,604 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 22:33:09,604 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 238 transitions. [2023-11-06 22:33:09,614 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 148 [2023-11-06 22:33:09,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:09,614 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:09,616 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:09,616 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:09,617 INFO L748 eck$LassoCheckResult]: Stem: 424#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 384#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1; 385#L183-1 [2023-11-06 22:33:09,618 INFO L750 eck$LassoCheckResult]: Loop: 385#L183-1 assume !false;havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1; 447#L49 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0; 445#L78 assume !(0 != main_~p1~0#1); 443#L78-2 assume !(0 != main_~p2~0#1); 444#L82-1 assume !(0 != main_~p3~0#1); 490#L86-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 438#L90-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 439#L94-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 434#L98-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 435#L102-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 432#L106-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 433#L110-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 422#L114-1 assume !(0 != main_~p11~0#1); 423#L118-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 425#L122-1 assume !(0 != main_~p1~0#1); 426#L128-1 assume !(0 != main_~p2~0#1); 489#L133-1 assume !(0 != main_~p3~0#1); 487#L138-1 assume !(0 != main_~p4~0#1); 483#L143-1 assume !(0 != main_~p5~0#1); 479#L148-1 assume !(0 != main_~p6~0#1); 475#L153-1 assume !(0 != main_~p7~0#1); 471#L158-1 assume !(0 != main_~p8~0#1); 467#L163-1 assume !(0 != main_~p9~0#1); 459#L168-1 assume !(0 != main_~p10~0#1); 454#L173-1 assume !(0 != main_~p11~0#1); 451#L178-1 assume !(0 != main_~p12~0#1); 385#L183-1 [2023-11-06 22:33:09,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-06 22:33:09,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:09,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869878502] [2023-11-06 22:33:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:09,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:09,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:09,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:09,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1536315912, now seen corresponding path program 1 times [2023-11-06 22:33:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:09,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128539036] [2023-11-06 22:33:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:09,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:09,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:09,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128539036] [2023-11-06 22:33:09,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128539036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:09,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:09,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212435098] [2023-11-06 22:33:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:09,749 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:33:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:09,750 INFO L87 Difference]: Start difference. First operand 150 states and 238 transitions. cyclomatic complexity: 92 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-06 22:33:09,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:09,779 INFO L93 Difference]: Finished difference Result 294 states and 462 transitions. [2023-11-06 22:33:09,779 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 294 states and 462 transitions. [2023-11-06 22:33:09,783 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 292 [2023-11-06 22:33:09,787 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 294 states to 294 states and 462 transitions. [2023-11-06 22:33:09,787 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 294 [2023-11-06 22:33:09,789 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 294 [2023-11-06 22:33:09,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 462 transitions. [2023-11-06 22:33:09,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:09,791 INFO L218 hiAutomatonCegarLoop]: Abstraction has 294 states and 462 transitions. [2023-11-06 22:33:09,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states and 462 transitions. [2023-11-06 22:33:09,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-11-06 22:33:09,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 294 states have (on average 1.5714285714285714) internal successors, (462), 293 states have internal predecessors, (462), 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) [2023-11-06 22:33:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 462 transitions. [2023-11-06 22:33:09,818 INFO L240 hiAutomatonCegarLoop]: Abstraction has 294 states and 462 transitions. [2023-11-06 22:33:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:09,819 INFO L428 stractBuchiCegarLoop]: Abstraction has 294 states and 462 transitions. [2023-11-06 22:33:09,819 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 22:33:09,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 294 states and 462 transitions. [2023-11-06 22:33:09,822 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 292 [2023-11-06 22:33:09,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:09,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:09,823 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:09,824 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:09,824 INFO L748 eck$LassoCheckResult]: Stem: 871#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 830#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1; 831#L183-1 [2023-11-06 22:33:09,824 INFO L750 eck$LassoCheckResult]: Loop: 831#L183-1 assume !false;havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1; 885#L49 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0; 882#L78 assume !(0 != main_~p1~0#1); 883#L78-2 assume !(0 != main_~p2~0#1); 961#L82-1 assume !(0 != main_~p3~0#1); 957#L86-1 assume !(0 != main_~p4~0#1); 954#L90-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 951#L94-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 948#L98-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 945#L102-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 942#L106-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 939#L110-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 936#L114-1 assume !(0 != main_~p11~0#1); 934#L118-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 931#L122-1 assume !(0 != main_~p1~0#1); 928#L128-1 assume !(0 != main_~p2~0#1); 926#L133-1 assume !(0 != main_~p3~0#1); 921#L138-1 assume !(0 != main_~p4~0#1); 918#L143-1 assume !(0 != main_~p5~0#1); 914#L148-1 assume !(0 != main_~p6~0#1); 910#L153-1 assume !(0 != main_~p7~0#1); 906#L158-1 assume !(0 != main_~p8~0#1); 902#L163-1 assume !(0 != main_~p9~0#1); 898#L168-1 assume !(0 != main_~p10~0#1); 893#L173-1 assume !(0 != main_~p11~0#1); 890#L178-1 assume !(0 != main_~p12~0#1); 831#L183-1 [2023-11-06 22:33:09,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:09,825 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-06 22:33:09,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:09,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327357390] [2023-11-06 22:33:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:09,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:09,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:09,840 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:09,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:09,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1959017738, now seen corresponding path program 1 times [2023-11-06 22:33:09,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:09,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033985414] [2023-11-06 22:33:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:09,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:09,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:09,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033985414] [2023-11-06 22:33:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033985414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:09,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:09,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:09,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105663317] [2023-11-06 22:33:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:09,888 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:33:09,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:09,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:09,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:09,889 INFO L87 Difference]: Start difference. First operand 294 states and 462 transitions. cyclomatic complexity: 176 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-06 22:33:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:09,911 INFO L93 Difference]: Finished difference Result 578 states and 898 transitions. [2023-11-06 22:33:09,911 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 578 states and 898 transitions. [2023-11-06 22:33:09,917 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 576 [2023-11-06 22:33:09,927 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 578 states to 578 states and 898 transitions. [2023-11-06 22:33:09,928 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 578 [2023-11-06 22:33:09,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 578 [2023-11-06 22:33:09,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 578 states and 898 transitions. [2023-11-06 22:33:09,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:09,935 INFO L218 hiAutomatonCegarLoop]: Abstraction has 578 states and 898 transitions. [2023-11-06 22:33:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states and 898 transitions. [2023-11-06 22:33:09,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2023-11-06 22:33:09,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 578 states have (on average 1.5536332179930796) internal successors, (898), 577 states have internal predecessors, (898), 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) [2023-11-06 22:33:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 898 transitions. [2023-11-06 22:33:09,985 INFO L240 hiAutomatonCegarLoop]: Abstraction has 578 states and 898 transitions. [2023-11-06 22:33:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:09,987 INFO L428 stractBuchiCegarLoop]: Abstraction has 578 states and 898 transitions. [2023-11-06 22:33:09,987 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 22:33:09,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 578 states and 898 transitions. [2023-11-06 22:33:09,991 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 576 [2023-11-06 22:33:09,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:09,993 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:09,993 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:09,994 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:09,994 INFO L748 eck$LassoCheckResult]: Stem: 1747#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 1709#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1; 1710#L183-1 [2023-11-06 22:33:09,995 INFO L750 eck$LassoCheckResult]: Loop: 1710#L183-1 assume !false;havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1; 1765#L49 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0; 1766#L78 assume !(0 != main_~p1~0#1); 1865#L78-2 assume !(0 != main_~p2~0#1); 1863#L82-1 assume !(0 != main_~p3~0#1); 1859#L86-1 assume !(0 != main_~p4~0#1); 1857#L90-1 assume !(0 != main_~p5~0#1); 1855#L94-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1853#L98-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1851#L102-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1849#L106-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1847#L110-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1845#L114-1 assume !(0 != main_~p11~0#1); 1843#L118-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1839#L122-1 assume !(0 != main_~p1~0#1); 1835#L128-1 assume !(0 != main_~p2~0#1); 1832#L133-1 assume !(0 != main_~p3~0#1); 1827#L138-1 assume !(0 != main_~p4~0#1); 1824#L143-1 assume !(0 != main_~p5~0#1); 1825#L148-1 assume !(0 != main_~p6~0#1); 1802#L153-1 assume !(0 != main_~p7~0#1); 1801#L158-1 assume !(0 != main_~p8~0#1); 1791#L163-1 assume !(0 != main_~p9~0#1); 1787#L168-1 assume !(0 != main_~p10~0#1); 1786#L173-1 assume !(0 != main_~p11~0#1); 1775#L178-1 assume !(0 != main_~p12~0#1); 1710#L183-1 [2023-11-06 22:33:09,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:09,995 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2023-11-06 22:33:09,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:09,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051306305] [2023-11-06 22:33:09,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:09,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:10,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:10,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:10,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:10,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1141369288, now seen corresponding path program 1 times [2023-11-06 22:33:10,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:10,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125122518] [2023-11-06 22:33:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:10,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:10,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:10,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125122518] [2023-11-06 22:33:10,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125122518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:10,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:10,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:10,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228857916] [2023-11-06 22:33:10,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:10,049 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:33:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:10,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:10,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:10,050 INFO L87 Difference]: Start difference. First operand 578 states and 898 transitions. cyclomatic complexity: 336 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-06 22:33:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:10,072 INFO L93 Difference]: Finished difference Result 1138 states and 1746 transitions. [2023-11-06 22:33:10,072 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1138 states and 1746 transitions. [2023-11-06 22:33:10,084 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1136 [2023-11-06 22:33:10,095 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1138 states to 1138 states and 1746 transitions. [2023-11-06 22:33:10,095 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1138 [2023-11-06 22:33:10,096 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1138 [2023-11-06 22:33:10,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1138 states and 1746 transitions. [2023-11-06 22:33:10,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:10,101 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2023-11-06 22:33:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states and 1746 transitions. [2023-11-06 22:33:10,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1138. [2023-11-06 22:33:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1138 states have (on average 1.5342706502636203) internal successors, (1746), 1137 states have internal predecessors, (1746), 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) [2023-11-06 22:33:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1746 transitions. [2023-11-06 22:33:10,140 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2023-11-06 22:33:10,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:10,143 INFO L428 stractBuchiCegarLoop]: Abstraction has 1138 states and 1746 transitions. [2023-11-06 22:33:10,143 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 22:33:10,143 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1138 states and 1746 transitions. [2023-11-06 22:33:10,151 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1136 [2023-11-06 22:33:10,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:10,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:10,153 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:10,153 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:10,153 INFO L748 eck$LassoCheckResult]: Stem: 3479#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 3429#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1; 3430#L183-1 [2023-11-06 22:33:10,154 INFO L750 eck$LassoCheckResult]: Loop: 3430#L183-1 assume !false;havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1; 3774#L49 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0; 3772#L78 assume !(0 != main_~p1~0#1); 3770#L78-2 assume !(0 != main_~p2~0#1); 3765#L82-1 assume !(0 != main_~p3~0#1); 3760#L86-1 assume !(0 != main_~p4~0#1); 3756#L90-1 assume !(0 != main_~p5~0#1); 3752#L94-1 assume !(0 != main_~p6~0#1); 3748#L98-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 3745#L102-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 3742#L106-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 3739#L110-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 3736#L114-1 assume !(0 != main_~p11~0#1); 3733#L118-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 3728#L122-1 assume !(0 != main_~p1~0#1); 3723#L128-1 assume !(0 != main_~p2~0#1); 3722#L133-1 assume !(0 != main_~p3~0#1); 3713#L138-1 assume !(0 != main_~p4~0#1); 3714#L143-1 assume !(0 != main_~p5~0#1); 3806#L148-1 assume !(0 != main_~p6~0#1); 3803#L153-1 assume !(0 != main_~p7~0#1); 3799#L158-1 assume !(0 != main_~p8~0#1); 3795#L163-1 assume !(0 != main_~p9~0#1); 3791#L168-1 assume !(0 != main_~p10~0#1); 3788#L173-1 assume !(0 != main_~p11~0#1); 3780#L178-1 assume !(0 != main_~p12~0#1); 3430#L183-1 [2023-11-06 22:33:10,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:10,155 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2023-11-06 22:33:10,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:10,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262557719] [2023-11-06 22:33:10,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:10,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:10,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:10,181 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:10,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash -547574454, now seen corresponding path program 1 times [2023-11-06 22:33:10,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:10,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332427850] [2023-11-06 22:33:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:10,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:10,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:10,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332427850] [2023-11-06 22:33:10,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332427850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:10,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:10,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:10,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090073868] [2023-11-06 22:33:10,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:10,254 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:33:10,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:10,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:10,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:10,256 INFO L87 Difference]: Start difference. First operand 1138 states and 1746 transitions. cyclomatic complexity: 640 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-06 22:33:10,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:10,291 INFO L93 Difference]: Finished difference Result 2242 states and 3394 transitions. [2023-11-06 22:33:10,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2242 states and 3394 transitions. [2023-11-06 22:33:10,324 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2240 [2023-11-06 22:33:10,345 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2242 states to 2242 states and 3394 transitions. [2023-11-06 22:33:10,346 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2242 [2023-11-06 22:33:10,348 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2242 [2023-11-06 22:33:10,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2242 states and 3394 transitions. [2023-11-06 22:33:10,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:10,353 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2023-11-06 22:33:10,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states and 3394 transitions. [2023-11-06 22:33:10,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2242. [2023-11-06 22:33:10,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 2242 states have (on average 1.5138269402319358) internal successors, (3394), 2241 states have internal predecessors, (3394), 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) [2023-11-06 22:33:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3394 transitions. [2023-11-06 22:33:10,410 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2023-11-06 22:33:10,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:10,413 INFO L428 stractBuchiCegarLoop]: Abstraction has 2242 states and 3394 transitions. [2023-11-06 22:33:10,413 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-06 22:33:10,414 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2242 states and 3394 transitions. [2023-11-06 22:33:10,431 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2240 [2023-11-06 22:33:10,431 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:10,432 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:10,433 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:10,434 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:10,434 INFO L748 eck$LassoCheckResult]: Stem: 6859#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 6816#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1; 6817#L183-1 [2023-11-06 22:33:10,434 INFO L750 eck$LassoCheckResult]: Loop: 6817#L183-1 assume !false;havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1; 6930#L49 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0; 6928#L78 assume !(0 != main_~p1~0#1); 6924#L78-2 assume !(0 != main_~p2~0#1); 6922#L82-1 assume !(0 != main_~p3~0#1); 6918#L86-1 assume !(0 != main_~p4~0#1); 6914#L90-1 assume !(0 != main_~p5~0#1); 6910#L94-1 assume !(0 != main_~p6~0#1); 6906#L98-1 assume !(0 != main_~p7~0#1); 6904#L102-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 6902#L106-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 6900#L110-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 6898#L114-1 assume !(0 != main_~p11~0#1); 6896#L118-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 6893#L122-1 assume !(0 != main_~p1~0#1); 6894#L128-1 assume !(0 != main_~p2~0#1); 6970#L133-1 assume !(0 != main_~p3~0#1); 6965#L138-1 assume !(0 != main_~p4~0#1); 6961#L143-1 assume !(0 != main_~p5~0#1); 6957#L148-1 assume !(0 != main_~p6~0#1); 6953#L153-1 assume !(0 != main_~p7~0#1); 6950#L158-1 assume !(0 != main_~p8~0#1); 6946#L163-1 assume !(0 != main_~p9~0#1); 6942#L168-1 assume !(0 != main_~p10~0#1); 6937#L173-1 assume !(0 != main_~p11~0#1); 6934#L178-1 assume !(0 != main_~p12~0#1); 6817#L183-1 [2023-11-06 22:33:10,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:10,436 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2023-11-06 22:33:10,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:10,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770256645] [2023-11-06 22:33:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:10,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:10,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:10,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:10,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1753248136, now seen corresponding path program 1 times [2023-11-06 22:33:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:10,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139517034] [2023-11-06 22:33:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:10,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:10,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:10,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139517034] [2023-11-06 22:33:10,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139517034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:10,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:10,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:10,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587676075] [2023-11-06 22:33:10,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:10,517 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:33:10,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:10,519 INFO L87 Difference]: Start difference. First operand 2242 states and 3394 transitions. cyclomatic complexity: 1216 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-06 22:33:10,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:10,592 INFO L93 Difference]: Finished difference Result 4418 states and 6594 transitions. [2023-11-06 22:33:10,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4418 states and 6594 transitions. [2023-11-06 22:33:10,647 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4416 [2023-11-06 22:33:10,684 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4418 states to 4418 states and 6594 transitions. [2023-11-06 22:33:10,684 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4418 [2023-11-06 22:33:10,688 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4418 [2023-11-06 22:33:10,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4418 states and 6594 transitions. [2023-11-06 22:33:10,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:10,697 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2023-11-06 22:33:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states and 6594 transitions. [2023-11-06 22:33:10,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 4418. [2023-11-06 22:33:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4418 states, 4418 states have (on average 1.4925305568130376) internal successors, (6594), 4417 states have internal predecessors, (6594), 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) [2023-11-06 22:33:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4418 states to 4418 states and 6594 transitions. [2023-11-06 22:33:10,824 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2023-11-06 22:33:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:10,827 INFO L428 stractBuchiCegarLoop]: Abstraction has 4418 states and 6594 transitions. [2023-11-06 22:33:10,827 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-06 22:33:10,827 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4418 states and 6594 transitions. [2023-11-06 22:33:10,856 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4416 [2023-11-06 22:33:10,856 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:10,856 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:10,858 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:10,858 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:10,859 INFO L748 eck$LassoCheckResult]: Stem: 13530#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 13482#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1; 13483#L183-1 [2023-11-06 22:33:10,859 INFO L750 eck$LassoCheckResult]: Loop: 13483#L183-1 assume !false;havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1; 14082#L49 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0; 14080#L78 assume !(0 != main_~p1~0#1); 14077#L78-2 assume !(0 != main_~p2~0#1); 14075#L82-1 assume !(0 != main_~p3~0#1); 14071#L86-1 assume !(0 != main_~p4~0#1); 13974#L90-1 assume !(0 != main_~p5~0#1); 13975#L94-1 assume !(0 != main_~p6~0#1); 14064#L98-1 assume !(0 != main_~p7~0#1); 14060#L102-1 assume !(0 != main_~p8~0#1); 14055#L106-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 14052#L110-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 14050#L114-1 assume !(0 != main_~p11~0#1); 14049#L118-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 14048#L122-1 assume !(0 != main_~p1~0#1); 14045#L128-1 assume !(0 != main_~p2~0#1); 14043#L133-1 assume !(0 != main_~p3~0#1); 13967#L138-1 assume !(0 != main_~p4~0#1); 13968#L143-1 assume !(0 != main_~p5~0#1); 14021#L148-1 assume !(0 != main_~p6~0#1); 14114#L153-1 assume !(0 != main_~p7~0#1); 14112#L158-1 assume !(0 != main_~p8~0#1); 14109#L163-1 assume !(0 != main_~p9~0#1); 14105#L168-1 assume !(0 != main_~p10~0#1); 14102#L173-1 assume !(0 != main_~p11~0#1); 14086#L178-1 assume !(0 != main_~p12~0#1); 13483#L183-1 [2023-11-06 22:33:10,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2023-11-06 22:33:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:10,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044270482] [2023-11-06 22:33:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:10,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:10,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:10,879 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:10,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash 164900234, now seen corresponding path program 1 times [2023-11-06 22:33:10,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:10,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266394576] [2023-11-06 22:33:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:10,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:10,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:10,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266394576] [2023-11-06 22:33:10,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266394576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:10,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:10,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:10,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682921280] [2023-11-06 22:33:10,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:10,943 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:33:10,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:10,944 INFO L87 Difference]: Start difference. First operand 4418 states and 6594 transitions. cyclomatic complexity: 2304 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-06 22:33:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:11,012 INFO L93 Difference]: Finished difference Result 8706 states and 12802 transitions. [2023-11-06 22:33:11,012 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8706 states and 12802 transitions. [2023-11-06 22:33:11,084 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 8704 [2023-11-06 22:33:11,231 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8706 states to 8706 states and 12802 transitions. [2023-11-06 22:33:11,232 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8706 [2023-11-06 22:33:11,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8706 [2023-11-06 22:33:11,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8706 states and 12802 transitions. [2023-11-06 22:33:11,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:11,254 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2023-11-06 22:33:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8706 states and 12802 transitions. [2023-11-06 22:33:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8706 to 8706. [2023-11-06 22:33:11,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8706 states, 8706 states have (on average 1.4704801286469102) internal successors, (12802), 8705 states have internal predecessors, (12802), 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) [2023-11-06 22:33:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8706 states to 8706 states and 12802 transitions. [2023-11-06 22:33:11,512 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2023-11-06 22:33:11,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:11,516 INFO L428 stractBuchiCegarLoop]: Abstraction has 8706 states and 12802 transitions. [2023-11-06 22:33:11,516 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-06 22:33:11,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8706 states and 12802 transitions. [2023-11-06 22:33:11,554 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 8704 [2023-11-06 22:33:11,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:11,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:11,556 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:11,556 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:11,556 INFO L748 eck$LassoCheckResult]: Stem: 26658#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 26611#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1; 26612#L183-1 [2023-11-06 22:33:11,556 INFO L750 eck$LassoCheckResult]: Loop: 26612#L183-1 assume !false;havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1; 27038#L49 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0; 27036#L78 assume !(0 != main_~p1~0#1); 27031#L78-2 assume !(0 != main_~p2~0#1); 27025#L82-1 assume !(0 != main_~p3~0#1); 27017#L86-1 assume !(0 != main_~p4~0#1); 27011#L90-1 assume !(0 != main_~p5~0#1); 27005#L94-1 assume !(0 != main_~p6~0#1); 26997#L98-1 assume !(0 != main_~p7~0#1); 26989#L102-1 assume !(0 != main_~p8~0#1); 26983#L106-1 assume !(0 != main_~p9~0#1); 26979#L110-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 26826#L114-1 assume !(0 != main_~p11~0#1); 26822#L118-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 26823#L122-1 assume !(0 != main_~p1~0#1); 26969#L128-1 assume !(0 != main_~p2~0#1); 26959#L133-1 assume !(0 != main_~p3~0#1); 26958#L138-1 assume !(0 != main_~p4~0#1); 26945#L143-1 assume !(0 != main_~p5~0#1); 26947#L148-1 assume !(0 != main_~p6~0#1); 27061#L153-1 assume !(0 != main_~p7~0#1); 27057#L158-1 assume !(0 != main_~p8~0#1); 27053#L163-1 assume !(0 != main_~p9~0#1); 27050#L168-1 assume !(0 != main_~p10~0#1); 27045#L173-1 assume !(0 != main_~p11~0#1); 27042#L178-1 assume !(0 != main_~p12~0#1); 26612#L183-1 [2023-11-06 22:33:11,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:11,557 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2023-11-06 22:33:11,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:11,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066031569] [2023-11-06 22:33:11,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:11,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:11,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:11,568 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:11,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:11,569 INFO L85 PathProgramCache]: Analyzing trace with hash -856168120, now seen corresponding path program 1 times [2023-11-06 22:33:11,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:11,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452937078] [2023-11-06 22:33:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:11,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:11,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:11,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452937078] [2023-11-06 22:33:11,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452937078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:11,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:11,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:11,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292036723] [2023-11-06 22:33:11,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:11,594 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:33:11,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:11,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:11,595 INFO L87 Difference]: Start difference. First operand 8706 states and 12802 transitions. cyclomatic complexity: 4352 Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-06 22:33:11,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:11,763 INFO L93 Difference]: Finished difference Result 17154 states and 24834 transitions. [2023-11-06 22:33:11,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17154 states and 24834 transitions. [2023-11-06 22:33:11,863 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 17152 [2023-11-06 22:33:11,948 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17154 states to 17154 states and 24834 transitions. [2023-11-06 22:33:11,948 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17154 [2023-11-06 22:33:11,961 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17154 [2023-11-06 22:33:11,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17154 states and 24834 transitions. [2023-11-06 22:33:11,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:11,979 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2023-11-06 22:33:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17154 states and 24834 transitions. [2023-11-06 22:33:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17154 to 17154. [2023-11-06 22:33:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17154 states, 17154 states have (on average 1.4477089891570478) internal successors, (24834), 17153 states have internal predecessors, (24834), 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) [2023-11-06 22:33:12,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17154 states to 17154 states and 24834 transitions. [2023-11-06 22:33:12,419 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2023-11-06 22:33:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:12,420 INFO L428 stractBuchiCegarLoop]: Abstraction has 17154 states and 24834 transitions. [2023-11-06 22:33:12,420 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-06 22:33:12,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17154 states and 24834 transitions. [2023-11-06 22:33:12,569 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 17152 [2023-11-06 22:33:12,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:12,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:12,570 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:12,570 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:12,570 INFO L748 eck$LassoCheckResult]: Stem: 52526#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 52477#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1; 52478#L183-1 [2023-11-06 22:33:12,571 INFO L750 eck$LassoCheckResult]: Loop: 52478#L183-1 assume !false;havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1; 52903#L49 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0; 52901#L78 assume !(0 != main_~p1~0#1); 52897#L78-2 assume !(0 != main_~p2~0#1); 52894#L82-1 assume !(0 != main_~p3~0#1); 52886#L86-1 assume !(0 != main_~p4~0#1); 52878#L90-1 assume !(0 != main_~p5~0#1); 52879#L94-1 assume !(0 != main_~p6~0#1); 52876#L98-1 assume !(0 != main_~p7~0#1); 52868#L102-1 assume !(0 != main_~p8~0#1); 52860#L106-1 assume !(0 != main_~p9~0#1); 52852#L110-1 assume !(0 != main_~p10~0#1); 52845#L114-1 assume !(0 != main_~p11~0#1); 52716#L118-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 52717#L122-1 assume !(0 != main_~p1~0#1); 52824#L128-1 assume !(0 != main_~p2~0#1); 52826#L133-1 assume !(0 != main_~p3~0#1); 52812#L138-1 assume !(0 != main_~p4~0#1); 52813#L143-1 assume !(0 != main_~p5~0#1); 52930#L148-1 assume !(0 != main_~p6~0#1); 52926#L153-1 assume !(0 != main_~p7~0#1); 52922#L158-1 assume !(0 != main_~p8~0#1); 52918#L163-1 assume !(0 != main_~p9~0#1); 52914#L168-1 assume !(0 != main_~p10~0#1); 52910#L173-1 assume !(0 != main_~p11~0#1); 52907#L178-1 assume !(0 != main_~p12~0#1); 52478#L183-1 [2023-11-06 22:33:12,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:12,571 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2023-11-06 22:33:12,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:12,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581802070] [2023-11-06 22:33:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:12,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:12,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:12,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:12,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2136031798, now seen corresponding path program 1 times [2023-11-06 22:33:12,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:12,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994518195] [2023-11-06 22:33:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:12,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:33:12,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:12,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994518195] [2023-11-06 22:33:12,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994518195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:12,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:12,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:33:12,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375535091] [2023-11-06 22:33:12,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:12,644 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:33:12,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:12,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:12,649 INFO L87 Difference]: Start difference. First operand 17154 states and 24834 transitions. cyclomatic complexity: 8192 Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-06 22:33:12,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:12,926 INFO L93 Difference]: Finished difference Result 33794 states and 48130 transitions. [2023-11-06 22:33:12,926 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33794 states and 48130 transitions. [2023-11-06 22:33:13,298 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 33792 [2023-11-06 22:33:13,419 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33794 states to 33794 states and 48130 transitions. [2023-11-06 22:33:13,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33794 [2023-11-06 22:33:13,449 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33794 [2023-11-06 22:33:13,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33794 states and 48130 transitions. [2023-11-06 22:33:13,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:13,471 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2023-11-06 22:33:13,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33794 states and 48130 transitions. [2023-11-06 22:33:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33794 to 33794. [2023-11-06 22:33:14,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33794 states, 33794 states have (on average 1.4242173166834349) internal successors, (48130), 33793 states have internal predecessors, (48130), 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) [2023-11-06 22:33:14,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33794 states to 33794 states and 48130 transitions. [2023-11-06 22:33:14,177 INFO L240 hiAutomatonCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2023-11-06 22:33:14,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:14,178 INFO L428 stractBuchiCegarLoop]: Abstraction has 33794 states and 48130 transitions. [2023-11-06 22:33:14,178 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-06 22:33:14,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33794 states and 48130 transitions. [2023-11-06 22:33:14,407 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 33792 [2023-11-06 22:33:14,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:33:14,408 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:33:14,408 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:33:14,409 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2023-11-06 22:33:14,409 INFO L748 eck$LassoCheckResult]: Stem: 103487#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 103431#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_~cond~0#1; 103432#L183-1 [2023-11-06 22:33:14,409 INFO L750 eck$LassoCheckResult]: Loop: 103432#L183-1 assume !false;havoc main_#t~nondet16#1;main_~cond~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1; 103593#L49 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0; 103591#L78 assume !(0 != main_~p1~0#1); 103587#L78-2 assume !(0 != main_~p2~0#1); 103585#L82-1 assume !(0 != main_~p3~0#1); 103581#L86-1 assume !(0 != main_~p4~0#1); 103577#L90-1 assume !(0 != main_~p5~0#1); 103573#L94-1 assume !(0 != main_~p6~0#1); 103569#L98-1 assume !(0 != main_~p7~0#1); 103565#L102-1 assume !(0 != main_~p8~0#1); 103561#L106-1 assume !(0 != main_~p9~0#1); 103557#L110-1 assume !(0 != main_~p10~0#1); 103555#L114-1 assume !(0 != main_~p11~0#1); 103551#L118-1 assume !(0 != main_~p12~0#1); 103548#L122-1 assume !(0 != main_~p1~0#1); 103549#L128-1 assume !(0 != main_~p2~0#1); 103633#L133-1 assume !(0 != main_~p3~0#1); 103628#L138-1 assume !(0 != main_~p4~0#1); 103624#L143-1 assume !(0 != main_~p5~0#1); 103620#L148-1 assume !(0 != main_~p6~0#1); 103616#L153-1 assume !(0 != main_~p7~0#1); 103612#L158-1 assume !(0 != main_~p8~0#1); 103608#L163-1 assume !(0 != main_~p9~0#1); 103604#L168-1 assume !(0 != main_~p10~0#1); 103600#L173-1 assume !(0 != main_~p11~0#1); 103596#L178-1 assume !(0 != main_~p12~0#1); 103432#L183-1 [2023-11-06 22:33:14,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:14,409 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2023-11-06 22:33:14,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:14,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718202948] [2023-11-06 22:33:14,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:14,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:14,440 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:14,446 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:14,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1572129484, now seen corresponding path program 1 times [2023-11-06 22:33:14,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:14,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342609048] [2023-11-06 22:33:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:14,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:14,460 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:14,472 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:14,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:14,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1068122098, now seen corresponding path program 1 times [2023-11-06 22:33:14,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:14,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557656824] [2023-11-06 22:33:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:14,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:14,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:14,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:33:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:15,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:33:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:33:15,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:33:15 BoogieIcfgContainer [2023-11-06 22:33:15,170 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:33:15,170 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:33:15,170 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:33:15,171 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:33:15,171 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:33:08" (3/4) ... [2023-11-06 22:33:15,173 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 22:33:15,213 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:33:15,213 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:33:15,214 INFO L158 Benchmark]: Toolchain (without parser) took 7099.77ms. Allocated memory was 169.9MB in the beginning and 715.1MB in the end (delta: 545.3MB). Free memory was 125.9MB in the beginning and 479.5MB in the end (delta: -353.6MB). Peak memory consumption was 192.0MB. Max. memory is 16.1GB. [2023-11-06 22:33:15,214 INFO L158 Benchmark]: CDTParser took 0.69ms. Allocated memory is still 169.9MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:33:15,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.39ms. Allocated memory is still 169.9MB. Free memory was 125.9MB in the beginning and 114.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:33:15,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.24ms. Allocated memory is still 169.9MB. Free memory was 114.3MB in the beginning and 112.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:33:15,216 INFO L158 Benchmark]: Boogie Preprocessor took 27.56ms. Allocated memory is still 169.9MB. Free memory was 112.6MB in the beginning and 111.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:33:15,216 INFO L158 Benchmark]: RCFGBuilder took 445.92ms. Allocated memory is still 169.9MB. Free memory was 110.8MB in the beginning and 97.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:33:15,217 INFO L158 Benchmark]: BuchiAutomizer took 6244.46ms. Allocated memory was 169.9MB in the beginning and 715.1MB in the end (delta: 545.3MB). Free memory was 97.2MB in the beginning and 482.6MB in the end (delta: -385.4MB). Peak memory consumption was 162.6MB. Max. memory is 16.1GB. [2023-11-06 22:33:15,217 INFO L158 Benchmark]: Witness Printer took 43.26ms. Allocated memory is still 715.1MB. Free memory was 482.6MB in the beginning and 479.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:33:15,219 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69ms. Allocated memory is still 169.9MB. Free memory is still 144.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.39ms. Allocated memory is still 169.9MB. Free memory was 125.9MB in the beginning and 114.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.24ms. Allocated memory is still 169.9MB. Free memory was 114.3MB in the beginning and 112.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.56ms. Allocated memory is still 169.9MB. Free memory was 112.6MB in the beginning and 111.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 445.92ms. Allocated memory is still 169.9MB. Free memory was 110.8MB in the beginning and 97.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 6244.46ms. Allocated memory was 169.9MB in the beginning and 715.1MB in the end (delta: 545.3MB). Free memory was 97.2MB in the beginning and 482.6MB in the end (delta: -385.4MB). Peak memory consumption was 162.6MB. Max. memory is 16.1GB. * Witness Printer took 43.26ms. Allocated memory is still 715.1MB. Free memory was 482.6MB in the beginning and 479.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (10 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.10 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 33794 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.1s and 11 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 3.7s. Highest rank in rank-based complementation 0. Minimization of det autom 10. Minimization of nondet autom 0. Automata minimization 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 1.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 494 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 494 mSDsluCounter, 1550 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 594 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 956 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI10 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 47]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L45] int cond; Loop: [L47] COND TRUE 1 [L48] cond = __VERIFIER_nondet_int() [L49] COND FALSE !(cond == 0) [L52] lk1 = 0 [L54] lk2 = 0 [L56] lk3 = 0 [L58] lk4 = 0 [L60] lk5 = 0 [L62] lk6 = 0 [L64] lk7 = 0 [L66] lk8 = 0 [L68] lk9 = 0 [L70] lk10 = 0 [L72] lk11 = 0 [L74] lk12 = 0 [L78] COND FALSE !(p1 != 0) [L82] COND FALSE !(p2 != 0) [L86] COND FALSE !(p3 != 0) [L90] COND FALSE !(p4 != 0) [L94] COND FALSE !(p5 != 0) [L98] COND FALSE !(p6 != 0) [L102] COND FALSE !(p7 != 0) [L106] COND FALSE !(p8 != 0) [L110] COND FALSE !(p9 != 0) [L114] COND FALSE !(p10 != 0) [L118] COND FALSE !(p11 != 0) [L122] COND FALSE !(p12 != 0) [L128] COND FALSE !(p1 != 0) [L133] COND FALSE !(p2 != 0) [L138] COND FALSE !(p3 != 0) [L143] COND FALSE !(p4 != 0) [L148] COND FALSE !(p5 != 0) [L153] COND FALSE !(p6 != 0) [L158] COND FALSE !(p7 != 0) [L163] COND FALSE !(p8 != 0) [L168] COND FALSE !(p9 != 0) [L173] COND FALSE !(p10 != 0) [L178] COND FALSE !(p11 != 0) [L183] COND FALSE !(p12 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 47]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L45] int cond; Loop: [L47] COND TRUE 1 [L48] cond = __VERIFIER_nondet_int() [L49] COND FALSE !(cond == 0) [L52] lk1 = 0 [L54] lk2 = 0 [L56] lk3 = 0 [L58] lk4 = 0 [L60] lk5 = 0 [L62] lk6 = 0 [L64] lk7 = 0 [L66] lk8 = 0 [L68] lk9 = 0 [L70] lk10 = 0 [L72] lk11 = 0 [L74] lk12 = 0 [L78] COND FALSE !(p1 != 0) [L82] COND FALSE !(p2 != 0) [L86] COND FALSE !(p3 != 0) [L90] COND FALSE !(p4 != 0) [L94] COND FALSE !(p5 != 0) [L98] COND FALSE !(p6 != 0) [L102] COND FALSE !(p7 != 0) [L106] COND FALSE !(p8 != 0) [L110] COND FALSE !(p9 != 0) [L114] COND FALSE !(p10 != 0) [L118] COND FALSE !(p11 != 0) [L122] COND FALSE !(p12 != 0) [L128] COND FALSE !(p1 != 0) [L133] COND FALSE !(p2 != 0) [L138] COND FALSE !(p3 != 0) [L143] COND FALSE !(p4 != 0) [L148] COND FALSE !(p5 != 0) [L153] COND FALSE !(p6 != 0) [L158] COND FALSE !(p7 != 0) [L163] COND FALSE !(p8 != 0) [L168] COND FALSE !(p9 != 0) [L173] COND FALSE !(p10 != 0) [L178] COND FALSE !(p11 != 0) [L183] COND FALSE !(p12 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 22:33:15,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcc33d66-7f13-4244-9d93-c07e576273c0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)