./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal89.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal89.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1c6e0ea185f52ea18ac3a55bac74785cd127169d991a19ddbdff00a1c57f3d85 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:08:44,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:08:44,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:08:44,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:08:44,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:08:44,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:08:44,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:08:44,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:08:44,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:08:44,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:08:44,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:08:44,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:08:44,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:08:44,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:08:44,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:08:44,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:08:44,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:08:44,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:08:44,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:08:44,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:08:44,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:08:44,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:08:44,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:08:44,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:08:44,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:08:44,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:08:44,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:08:44,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:08:44,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:08:44,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:08:44,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:08:44,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:08:44,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:08:44,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:08:44,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:08:44,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:08:44,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:08:44,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:08:44,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:08:44,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:08:44,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:08:44,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 12:08:44,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:08:44,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:08:44,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:08:44,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:08:44,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:08:44,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:08:44,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:08:44,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:08:44,582 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:08:44,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:08:44,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:08:44,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:08:44,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:08:44,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:08:44,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:08:44,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:08:44,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:08:44,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:08:44,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:08:44,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:08:44,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:08:44,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:08:44,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:08:44,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:08:44,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:08:44,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:08:44,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:08:44,592 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:08:44,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:08:44,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:08:44,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6e0ea185f52ea18ac3a55bac74785cd127169d991a19ddbdff00a1c57f3d85 [2022-11-16 12:08:44,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:08:44,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:08:44,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:08:44,967 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:08:44,968 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:08:44,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal89.c [2022-11-16 12:08:45,063 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/data/5e51dbc1e/fb7979acc5ca48c6b8a231c57fba2252/FLAG7e87b8b0e [2022-11-16 12:08:46,345 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:08:46,346 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal89.c [2022-11-16 12:08:46,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/data/5e51dbc1e/fb7979acc5ca48c6b8a231c57fba2252/FLAG7e87b8b0e [2022-11-16 12:08:46,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/data/5e51dbc1e/fb7979acc5ca48c6b8a231c57fba2252 [2022-11-16 12:08:46,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:08:46,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:08:46,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:08:46,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:08:46,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:08:46,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:08:46" (1/1) ... [2022-11-16 12:08:46,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c80411d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:46, skipping insertion in model container [2022-11-16 12:08:46,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:08:46" (1/1) ... [2022-11-16 12:08:46,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:08:46,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:08:47,550 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal89.c[1107,1120] [2022-11-16 12:08:49,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:08:49,365 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:08:49,377 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal89.c[1107,1120] [2022-11-16 12:08:50,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:08:50,456 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:08:50,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50 WrapperNode [2022-11-16 12:08:50,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:08:50,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:08:50,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:08:50,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:08:50,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (1/1) ... [2022-11-16 12:08:50,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (1/1) ... [2022-11-16 12:08:52,275 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30526 [2022-11-16 12:08:52,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:08:52,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:08:52,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:08:52,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:08:52,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (1/1) ... [2022-11-16 12:08:52,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (1/1) ... [2022-11-16 12:08:52,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (1/1) ... [2022-11-16 12:08:52,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (1/1) ... [2022-11-16 12:08:53,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (1/1) ... [2022-11-16 12:08:53,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (1/1) ... [2022-11-16 12:08:53,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (1/1) ... [2022-11-16 12:08:53,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (1/1) ... [2022-11-16 12:08:53,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:08:53,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:08:53,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:08:53,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:08:53,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (1/1) ... [2022-11-16 12:08:53,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:08:53,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:53,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:08:53,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5720ae3-6fec-4836-82a1-58343434d4bd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:08:53,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:08:53,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:08:56,574 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:08:56,576 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:09:29,256 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:09:29,299 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:09:29,299 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:09:29,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:29 BoogieIcfgContainer [2022-11-16 12:09:29,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:09:29,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:09:29,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:09:29,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:09:29,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:08:46" (1/3) ... [2022-11-16 12:09:29,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4726e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:29, skipping insertion in model container [2022-11-16 12:09:29,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:08:50" (2/3) ... [2022-11-16 12:09:29,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4726e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:09:29, skipping insertion in model container [2022-11-16 12:09:29,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:09:29" (3/3) ... [2022-11-16 12:09:29,317 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal89.c [2022-11-16 12:09:29,338 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:09:29,338 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:09:29,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:09:29,496 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7056e955, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:09:29,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:09:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 5576 states, 5574 states have (on average 1.666307857911733) internal successors, (9288), 5575 states have internal predecessors, (9288), 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) [2022-11-16 12:09:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-11-16 12:09:29,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:29,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:29,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:29,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:29,545 INFO L85 PathProgramCache]: Analyzing trace with hash -592985308, now seen corresponding path program 1 times [2022-11-16 12:09:29,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:29,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597390341] [2022-11-16 12:09:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:29,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:34,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:34,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597390341] [2022-11-16 12:09:34,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597390341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:34,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:34,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:09:34,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261463383] [2022-11-16 12:09:34,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:34,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:09:34,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:34,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:09:34,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:09:34,935 INFO L87 Difference]: Start difference. First operand has 5576 states, 5574 states have (on average 1.666307857911733) internal successors, (9288), 5575 states have internal predecessors, (9288), 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 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2022-11-16 12:09:35,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:35,605 INFO L93 Difference]: Finished difference Result 17011 states and 28347 transitions. [2022-11-16 12:09:35,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:09:35,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2022-11-16 12:09:35,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:35,672 INFO L225 Difference]: With dead ends: 17011 [2022-11-16 12:09:35,672 INFO L226 Difference]: Without dead ends: 11437 [2022-11-16 12:09:35,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:09:35,698 INFO L413 NwaCegarLoop]: 9775 mSDtfsCounter, 27822 mSDsluCounter, 10263 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27822 SdHoareTripleChecker+Valid, 20038 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:35,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27822 Valid, 20038 Invalid, 18 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:09:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11437 states. [2022-11-16 12:09:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11437 to 5574. [2022-11-16 12:09:35,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5573 states have (on average 1.6658891082002512) internal successors, (9284), 5573 states have internal predecessors, (9284), 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) [2022-11-16 12:09:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 9284 transitions. [2022-11-16 12:09:35,990 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 9284 transitions. Word has length 203 [2022-11-16 12:09:35,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:35,995 INFO L495 AbstractCegarLoop]: Abstraction has 5574 states and 9284 transitions. [2022-11-16 12:09:35,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2022-11-16 12:09:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 9284 transitions. [2022-11-16 12:09:36,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-16 12:09:36,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:36,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:36,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:09:36,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:09:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:36,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1200949228, now seen corresponding path program 1 times [2022-11-16 12:09:36,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:36,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029859079] [2022-11-16 12:09:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:36,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:10:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:16,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029859079] [2022-11-16 12:10:16,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029859079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:16,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:16,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:10:16,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93199623] [2022-11-16 12:10:16,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:17,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:10:17,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:10:17,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:10:17,002 INFO L87 Difference]: Start difference. First operand 5574 states and 9284 transitions. Second operand has 11 states, 11 states have (on average 18.545454545454547) internal successors, (204), 11 states have internal predecessors, (204), 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) [2022-11-16 12:10:19,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:22,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:24,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:26,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:28,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:30,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:32,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:34,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:37,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:39,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:50,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:52,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:55,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:10:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:59,165 INFO L93 Difference]: Finished difference Result 71170 states and 118337 transitions. [2022-11-16 12:10:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:10:59,166 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.545454545454547) internal successors, (204), 11 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2022-11-16 12:10:59,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:59,308 INFO L225 Difference]: With dead ends: 71170 [2022-11-16 12:10:59,309 INFO L226 Difference]: Without dead ends: 44358 [2022-11-16 12:10:59,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2022-11-16 12:10:59,348 INFO L413 NwaCegarLoop]: 18981 mSDtfsCounter, 205113 mSDsluCounter, 196115 mSDsCounter, 0 mSdLazyCounter, 4744 mSolverCounterSat, 658 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205113 SdHoareTripleChecker+Valid, 215096 SdHoareTripleChecker+Invalid, 5413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.9s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 4744 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:59,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205113 Valid, 215096 Invalid, 5413 Unknown, 0 Unchecked, 0.9s Time], IncrementalHoareTripleChecker [658 Valid, 4744 Invalid, 11 Unknown, 0 Unchecked, 37.2s Time] [2022-11-16 12:10:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44358 states. [2022-11-16 12:10:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44358 to 11339. [2022-11-16 12:10:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11339 states, 11338 states have (on average 1.6659022755336037) internal successors, (18888), 11338 states have internal predecessors, (18888), 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) [2022-11-16 12:11:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11339 states to 11339 states and 18888 transitions. [2022-11-16 12:11:00,006 INFO L78 Accepts]: Start accepts. Automaton has 11339 states and 18888 transitions. Word has length 204 [2022-11-16 12:11:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:00,009 INFO L495 AbstractCegarLoop]: Abstraction has 11339 states and 18888 transitions. [2022-11-16 12:11:00,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.545454545454547) internal successors, (204), 11 states have internal predecessors, (204), 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) [2022-11-16 12:11:00,011 INFO L276 IsEmpty]: Start isEmpty. Operand 11339 states and 18888 transitions. [2022-11-16 12:11:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-16 12:11:00,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:00,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:00,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:11:00,028 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:11:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:00,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1620482224, now seen corresponding path program 1 times [2022-11-16 12:11:00,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:00,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727733932] [2022-11-16 12:11:00,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:00,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:26,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:26,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727733932] [2022-11-16 12:11:26,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727733932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:26,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:26,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:11:26,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128790037] [2022-11-16 12:11:26,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:26,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:11:26,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:26,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:11:26,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:11:26,742 INFO L87 Difference]: Start difference. First operand 11339 states and 18888 transitions. Second operand has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 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) [2022-11-16 12:11:29,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:11:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:33,631 INFO L93 Difference]: Finished difference Result 24789 states and 41269 transitions. [2022-11-16 12:11:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:11:33,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2022-11-16 12:11:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:33,655 INFO L225 Difference]: With dead ends: 24789 [2022-11-16 12:11:33,656 INFO L226 Difference]: Without dead ends: 13452 [2022-11-16 12:11:33,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:11:33,666 INFO L413 NwaCegarLoop]: 9190 mSDtfsCounter, 3024 mSDsluCounter, 15486 mSDsCounter, 0 mSdLazyCounter, 4637 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3024 SdHoareTripleChecker+Valid, 24676 SdHoareTripleChecker+Invalid, 4645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 4637 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:33,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3024 Valid, 24676 Invalid, 4645 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 4637 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-16 12:11:33,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13452 states. [2022-11-16 12:11:33,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13452 to 11544. [2022-11-16 12:11:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11544 states, 11543 states have (on average 1.6655115654509227) internal successors, (19225), 11543 states have internal predecessors, (19225), 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) [2022-11-16 12:11:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 19225 transitions. [2022-11-16 12:11:33,924 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 19225 transitions. Word has length 205 [2022-11-16 12:11:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:33,924 INFO L495 AbstractCegarLoop]: Abstraction has 11544 states and 19225 transitions. [2022-11-16 12:11:33,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.285714285714285) internal successors, (205), 7 states have internal predecessors, (205), 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) [2022-11-16 12:11:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 19225 transitions. [2022-11-16 12:11:33,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-16 12:11:33,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:33,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:33,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:11:33,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:11:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:33,931 INFO L85 PathProgramCache]: Analyzing trace with hash -589141932, now seen corresponding path program 1 times [2022-11-16 12:11:33,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:33,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179403705] [2022-11-16 12:11:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:33,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:11:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:11:36,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:11:36,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179403705] [2022-11-16 12:11:36,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179403705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:11:36,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:11:36,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:11:36,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114851919] [2022-11-16 12:11:36,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:11:36,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:11:36,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:11:36,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:11:36,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:11:36,855 INFO L87 Difference]: Start difference. First operand 11544 states and 19225 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 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) [2022-11-16 12:11:46,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:46,476 INFO L93 Difference]: Finished difference Result 56868 states and 94721 transitions. [2022-11-16 12:11:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:11:46,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2022-11-16 12:11:46,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:46,552 INFO L225 Difference]: With dead ends: 56868 [2022-11-16 12:11:46,553 INFO L226 Difference]: Without dead ends: 45531 [2022-11-16 12:11:46,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:11:46,576 INFO L413 NwaCegarLoop]: 14489 mSDtfsCounter, 46188 mSDsluCounter, 14635 mSDsCounter, 0 mSdLazyCounter, 8211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46188 SdHoareTripleChecker+Valid, 29124 SdHoareTripleChecker+Invalid, 8213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:46,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46188 Valid, 29124 Invalid, 8213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 8211 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-16 12:11:46,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45531 states. [2022-11-16 12:11:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45531 to 11841. [2022-11-16 12:11:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11841 states, 11840 states have (on average 1.665287162162162) internal successors, (19717), 11840 states have internal predecessors, (19717), 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) [2022-11-16 12:11:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11841 states to 11841 states and 19717 transitions. [2022-11-16 12:11:47,049 INFO L78 Accepts]: Start accepts. Automaton has 11841 states and 19717 transitions. Word has length 206 [2022-11-16 12:11:47,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:47,050 INFO L495 AbstractCegarLoop]: Abstraction has 11841 states and 19717 transitions. [2022-11-16 12:11:47,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 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) [2022-11-16 12:11:47,050 INFO L276 IsEmpty]: Start isEmpty. Operand 11841 states and 19717 transitions. [2022-11-16 12:11:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-16 12:11:47,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:47,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:11:47,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:11:47,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:11:47,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:47,056 INFO L85 PathProgramCache]: Analyzing trace with hash 86018194, now seen corresponding path program 1 times [2022-11-16 12:11:47,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:47,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776424055] [2022-11-16 12:11:47,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:47,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:11,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:11,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776424055] [2022-11-16 12:12:11,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776424055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:11,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:11,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:12:11,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74727103] [2022-11-16 12:12:11,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:11,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:12:11,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:11,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:12:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:12:11,802 INFO L87 Difference]: Start difference. First operand 11841 states and 19717 transitions. Second operand has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 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) [2022-11-16 12:12:14,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:12:19,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:12:19,816 INFO L93 Difference]: Finished difference Result 25785 states and 42909 transitions. [2022-11-16 12:12:19,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:12:19,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2022-11-16 12:12:19,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:12:19,840 INFO L225 Difference]: With dead ends: 25785 [2022-11-16 12:12:19,840 INFO L226 Difference]: Without dead ends: 14151 [2022-11-16 12:12:19,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:12:19,853 INFO L413 NwaCegarLoop]: 9268 mSDtfsCounter, 2538 mSDsluCounter, 22649 mSDsCounter, 0 mSdLazyCounter, 6668 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2538 SdHoareTripleChecker+Valid, 31917 SdHoareTripleChecker+Invalid, 6678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 6668 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:12:19,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2538 Valid, 31917 Invalid, 6678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 6668 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-16 12:12:19,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14151 states. [2022-11-16 12:12:20,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14151 to 12425. [2022-11-16 12:12:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12425 states, 12424 states have (on average 1.6646007726980039) internal successors, (20681), 12424 states have internal predecessors, (20681), 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) [2022-11-16 12:12:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12425 states to 12425 states and 20681 transitions. [2022-11-16 12:12:20,141 INFO L78 Accepts]: Start accepts. Automaton has 12425 states and 20681 transitions. Word has length 206 [2022-11-16 12:12:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:12:20,143 INFO L495 AbstractCegarLoop]: Abstraction has 12425 states and 20681 transitions. [2022-11-16 12:12:20,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 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) [2022-11-16 12:12:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 12425 states and 20681 transitions. [2022-11-16 12:12:20,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-16 12:12:20,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:12:20,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:12:20,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:12:20,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:12:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:12:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash -260949606, now seen corresponding path program 1 times [2022-11-16 12:12:20,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:12:20,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115466647] [2022-11-16 12:12:20,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:12:20,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:12:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:12:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:12:45,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:45,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115466647] [2022-11-16 12:12:45,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115466647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:12:45,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:12:45,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:12:45,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839150846] [2022-11-16 12:12:45,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:12:45,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:12:45,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:45,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:12:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:12:45,132 INFO L87 Difference]: Start difference. First operand 12425 states and 20681 transitions. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2022-11-16 12:13:08,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:08,251 INFO L93 Difference]: Finished difference Result 116054 states and 192896 transitions. [2022-11-16 12:13:08,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:13:08,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2022-11-16 12:13:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:08,339 INFO L225 Difference]: With dead ends: 116054 [2022-11-16 12:13:08,340 INFO L226 Difference]: Without dead ends: 104420 [2022-11-16 12:13:08,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:13:08,359 INFO L413 NwaCegarLoop]: 15660 mSDtfsCounter, 95773 mSDsluCounter, 76310 mSDsCounter, 0 mSdLazyCounter, 19838 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95773 SdHoareTripleChecker+Valid, 91970 SdHoareTripleChecker+Invalid, 20321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 19838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:08,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95773 Valid, 91970 Invalid, 20321 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [483 Valid, 19838 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2022-11-16 12:13:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104420 states. [2022-11-16 12:13:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104420 to 25792. [2022-11-16 12:13:09,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25792 states, 25791 states have (on average 1.663099530844093) internal successors, (42893), 25791 states have internal predecessors, (42893), 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) [2022-11-16 12:13:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25792 states to 25792 states and 42893 transitions. [2022-11-16 12:13:09,409 INFO L78 Accepts]: Start accepts. Automaton has 25792 states and 42893 transitions. Word has length 207 [2022-11-16 12:13:09,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:09,409 INFO L495 AbstractCegarLoop]: Abstraction has 25792 states and 42893 transitions. [2022-11-16 12:13:09,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2022-11-16 12:13:09,410 INFO L276 IsEmpty]: Start isEmpty. Operand 25792 states and 42893 transitions. [2022-11-16 12:13:09,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-16 12:13:09,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:09,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:09,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:13:09,418 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:09,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1274650778, now seen corresponding path program 1 times [2022-11-16 12:13:09,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:09,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757315502] [2022-11-16 12:13:09,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:09,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:10,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:10,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757315502] [2022-11-16 12:13:10,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757315502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:10,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:10,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:10,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532941653] [2022-11-16 12:13:10,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:10,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:10,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:10,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:10,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:10,785 INFO L87 Difference]: Start difference. First operand 25792 states and 42893 transitions. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2022-11-16 12:13:23,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:13:25,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:13:25,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:25,849 INFO L93 Difference]: Finished difference Result 191486 states and 318339 transitions. [2022-11-16 12:13:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:25,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2022-11-16 12:13:25,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:25,963 INFO L225 Difference]: With dead ends: 191486 [2022-11-16 12:13:25,963 INFO L226 Difference]: Without dead ends: 167577 [2022-11-16 12:13:25,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:13:25,988 INFO L413 NwaCegarLoop]: 17335 mSDtfsCounter, 82108 mSDsluCounter, 59099 mSDsCounter, 0 mSdLazyCounter, 7192 mSolverCounterSat, 178 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82108 SdHoareTripleChecker+Valid, 76434 SdHoareTripleChecker+Invalid, 7372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 7192 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:25,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82108 Valid, 76434 Invalid, 7372 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [178 Valid, 7192 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2022-11-16 12:13:26,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167577 states. [2022-11-16 12:13:27,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167577 to 50715. [2022-11-16 12:13:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50715 states, 50714 states have (on average 1.6622826044090389) internal successors, (84301), 50714 states have internal predecessors, (84301), 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) [2022-11-16 12:13:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50715 states to 50715 states and 84301 transitions. [2022-11-16 12:13:27,769 INFO L78 Accepts]: Start accepts. Automaton has 50715 states and 84301 transitions. Word has length 207 [2022-11-16 12:13:27,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:27,770 INFO L495 AbstractCegarLoop]: Abstraction has 50715 states and 84301 transitions. [2022-11-16 12:13:27,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2022-11-16 12:13:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 50715 states and 84301 transitions. [2022-11-16 12:13:27,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-16 12:13:27,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:27,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:27,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:13:27,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:27,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:27,784 INFO L85 PathProgramCache]: Analyzing trace with hash -776874930, now seen corresponding path program 1 times [2022-11-16 12:13:27,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:27,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181280827] [2022-11-16 12:13:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:27,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:29,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:29,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181280827] [2022-11-16 12:13:29,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181280827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:29,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:29,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:13:29,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516301792] [2022-11-16 12:13:29,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:29,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:13:29,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:13:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:13:29,834 INFO L87 Difference]: Start difference. First operand 50715 states and 84301 transitions. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2022-11-16 12:13:32,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:13:34,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:13:37,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:37,130 INFO L93 Difference]: Finished difference Result 119454 states and 198090 transitions. [2022-11-16 12:13:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:13:37,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2022-11-16 12:13:37,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:37,178 INFO L225 Difference]: With dead ends: 119454 [2022-11-16 12:13:37,178 INFO L226 Difference]: Without dead ends: 58233 [2022-11-16 12:13:37,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:13:37,202 INFO L413 NwaCegarLoop]: 9426 mSDtfsCounter, 11103 mSDsluCounter, 26335 mSDsCounter, 0 mSdLazyCounter, 3019 mSolverCounterSat, 186 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11103 SdHoareTripleChecker+Valid, 35761 SdHoareTripleChecker+Invalid, 3207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 3019 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:37,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11103 Valid, 35761 Invalid, 3207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [186 Valid, 3019 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-11-16 12:13:37,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58233 states. [2022-11-16 12:13:38,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58233 to 51589. [2022-11-16 12:13:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51589 states, 51588 states have (on average 1.66168488795844) internal successors, (85723), 51588 states have internal predecessors, (85723), 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) [2022-11-16 12:13:38,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51589 states to 51589 states and 85723 transitions. [2022-11-16 12:13:38,227 INFO L78 Accepts]: Start accepts. Automaton has 51589 states and 85723 transitions. Word has length 207 [2022-11-16 12:13:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:38,227 INFO L495 AbstractCegarLoop]: Abstraction has 51589 states and 85723 transitions. [2022-11-16 12:13:38,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2022-11-16 12:13:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 51589 states and 85723 transitions. [2022-11-16 12:13:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-16 12:13:38,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:38,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:38,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:13:38,242 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:38,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1638117276, now seen corresponding path program 1 times [2022-11-16 12:13:38,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:38,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433303880] [2022-11-16 12:13:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:38,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:40,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:40,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433303880] [2022-11-16 12:13:40,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433303880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:40,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:40,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:13:40,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120862869] [2022-11-16 12:13:40,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:40,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:13:40,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:40,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:13:40,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:13:40,312 INFO L87 Difference]: Start difference. First operand 51589 states and 85723 transitions. Second operand has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 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) [2022-11-16 12:13:42,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:13:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:49,186 INFO L93 Difference]: Finished difference Result 152043 states and 252672 transitions. [2022-11-16 12:13:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:49,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2022-11-16 12:13:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:49,268 INFO L225 Difference]: With dead ends: 152043 [2022-11-16 12:13:49,268 INFO L226 Difference]: Without dead ends: 103473 [2022-11-16 12:13:49,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:13:49,294 INFO L413 NwaCegarLoop]: 17990 mSDtfsCounter, 73997 mSDsluCounter, 59773 mSDsCounter, 0 mSdLazyCounter, 6096 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73997 SdHoareTripleChecker+Valid, 77763 SdHoareTripleChecker+Invalid, 6108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:49,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73997 Valid, 77763 Invalid, 6108 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11 Valid, 6096 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-16 12:13:49,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103473 states. [2022-11-16 12:13:50,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103473 to 51807. [2022-11-16 12:13:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51807 states, 51806 states have (on average 1.6616415087055554) internal successors, (86083), 51806 states have internal predecessors, (86083), 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) [2022-11-16 12:13:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51807 states to 51807 states and 86083 transitions. [2022-11-16 12:13:50,324 INFO L78 Accepts]: Start accepts. Automaton has 51807 states and 86083 transitions. Word has length 207 [2022-11-16 12:13:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:50,324 INFO L495 AbstractCegarLoop]: Abstraction has 51807 states and 86083 transitions. [2022-11-16 12:13:50,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 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) [2022-11-16 12:13:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 51807 states and 86083 transitions. [2022-11-16 12:13:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-16 12:13:50,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:50,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:50,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:13:50,337 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:50,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:50,338 INFO L85 PathProgramCache]: Analyzing trace with hash -413408432, now seen corresponding path program 1 times [2022-11-16 12:13:50,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:50,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426490898] [2022-11-16 12:13:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:50,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:52,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:52,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426490898] [2022-11-16 12:13:52,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426490898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:52,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:52,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:13:52,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841314094] [2022-11-16 12:13:52,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:52,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:13:52,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:52,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:13:52,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:13:52,509 INFO L87 Difference]: Start difference. First operand 51807 states and 86083 transitions. Second operand has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 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) [2022-11-16 12:13:55,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:13:57,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 12:14:00,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:00,761 INFO L93 Difference]: Finished difference Result 119488 states and 198166 transitions. [2022-11-16 12:14:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:14:00,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2022-11-16 12:14:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:00,801 INFO L225 Difference]: With dead ends: 119488 [2022-11-16 12:14:00,801 INFO L226 Difference]: Without dead ends: 58687 [2022-11-16 12:14:00,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:14:00,819 INFO L413 NwaCegarLoop]: 9441 mSDtfsCounter, 27797 mSDsluCounter, 42566 mSDsCounter, 0 mSdLazyCounter, 4230 mSolverCounterSat, 185 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27797 SdHoareTripleChecker+Valid, 52007 SdHoareTripleChecker+Invalid, 4417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 4230 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:00,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27797 Valid, 52007 Invalid, 4417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [185 Valid, 4230 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2022-11-16 12:14:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58687 states. [2022-11-16 12:14:01,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58687 to 52153. [2022-11-16 12:14:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52153 states, 52152 states have (on average 1.661010124252186) internal successors, (86625), 52152 states have internal predecessors, (86625), 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) [2022-11-16 12:14:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52153 states to 52153 states and 86625 transitions. [2022-11-16 12:14:01,570 INFO L78 Accepts]: Start accepts. Automaton has 52153 states and 86625 transitions. Word has length 207 [2022-11-16 12:14:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:01,571 INFO L495 AbstractCegarLoop]: Abstraction has 52153 states and 86625 transitions. [2022-11-16 12:14:01,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 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) [2022-11-16 12:14:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand 52153 states and 86625 transitions. [2022-11-16 12:14:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-16 12:14:01,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:01,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:01,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:14:01,583 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:01,584 INFO L85 PathProgramCache]: Analyzing trace with hash -654963750, now seen corresponding path program 1 times [2022-11-16 12:14:01,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:01,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690982331] [2022-11-16 12:14:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:01,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:26,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:26,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690982331] [2022-11-16 12:14:26,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690982331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:26,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:26,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:14:26,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726475953] [2022-11-16 12:14:26,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:26,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:14:26,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:14:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:14:26,374 INFO L87 Difference]: Start difference. First operand 52153 states and 86625 transitions. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2022-11-16 12:14:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:14:54,437 INFO L93 Difference]: Finished difference Result 239171 states and 397903 transitions. [2022-11-16 12:14:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:14:54,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2022-11-16 12:14:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:14:54,578 INFO L225 Difference]: With dead ends: 239171 [2022-11-16 12:14:54,578 INFO L226 Difference]: Without dead ends: 190601 [2022-11-16 12:14:54,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:14:54,617 INFO L413 NwaCegarLoop]: 7523 mSDtfsCounter, 127889 mSDsluCounter, 50687 mSDsCounter, 0 mSdLazyCounter, 16483 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127889 SdHoareTripleChecker+Valid, 58210 SdHoareTripleChecker+Invalid, 16490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:14:54,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127889 Valid, 58210 Invalid, 16490 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [7 Valid, 16483 Invalid, 0 Unknown, 0 Unchecked, 25.7s Time] [2022-11-16 12:14:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190601 states. [2022-11-16 12:14:55,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190601 to 28063. [2022-11-16 12:14:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28063 states, 28062 states have (on average 1.6606086522699737) internal successors, (46600), 28062 states have internal predecessors, (46600), 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) [2022-11-16 12:14:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28063 states to 28063 states and 46600 transitions. [2022-11-16 12:14:56,159 INFO L78 Accepts]: Start accepts. Automaton has 28063 states and 46600 transitions. Word has length 207 [2022-11-16 12:14:56,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:14:56,159 INFO L495 AbstractCegarLoop]: Abstraction has 28063 states and 46600 transitions. [2022-11-16 12:14:56,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2022-11-16 12:14:56,159 INFO L276 IsEmpty]: Start isEmpty. Operand 28063 states and 46600 transitions. [2022-11-16 12:14:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-16 12:14:56,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:14:56,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:14:56,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:14:56,168 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:14:56,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:56,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1071059150, now seen corresponding path program 1 times [2022-11-16 12:14:56,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:56,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098959564] [2022-11-16 12:14:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:56,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat