./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro --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 32bit --witnessprinter.graph.data.programhash a9f893ab935631e26843412fbbbf983c2aeac51b5ea91d56e5f6804258a66568 --- 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-8393723 [2022-11-18 20:38:28,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:38:28,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:38:28,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:38:28,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:38:28,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:38:28,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:38:28,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:38:28,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:38:28,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:38:28,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:38:28,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:38:28,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:38:28,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:38:28,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:38:28,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:38:28,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:38:28,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:38:28,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:38:28,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:38:28,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:38:28,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:38:28,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:38:28,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:38:28,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:38:28,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:38:28,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:38:28,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:38:28,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:38:28,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:38:28,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:38:28,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:38:28,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:38:28,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:38:28,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:38:28,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:38:28,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:38:28,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:38:28,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:38:28,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:38:28,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:38:28,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:38:28,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:38:28,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:38:28,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:38:28,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:38:28,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:38:28,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:38:28,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:38:28,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:38:28,780 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:38:28,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:38:28,781 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:38:28,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:38:28,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:38:28,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:38:28,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:38:28,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:38:28,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:38:28,783 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:38:28,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:38:28,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:38:28,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:38:28,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:38:28,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:38:28,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:38:28,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:38:28,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:38:28,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:38:28,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:38:28,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:38:28,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:38:28,789 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:38:28,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:38:28,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:38:28,790 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_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9f893ab935631e26843412fbbbf983c2aeac51b5ea91d56e5f6804258a66568 [2022-11-18 20:38:29,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:38:29,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:38:29,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:38:29,209 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:38:29,210 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:38:29,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c [2022-11-18 20:38:29,298 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/data/ceb6cce23/899e85f6c954471dbae06b4a963cce40/FLAGe789d6940 [2022-11-18 20:38:30,479 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:38:30,480 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c [2022-11-18 20:38:30,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/data/ceb6cce23/899e85f6c954471dbae06b4a963cce40/FLAGe789d6940 [2022-11-18 20:38:30,780 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/data/ceb6cce23/899e85f6c954471dbae06b4a963cce40 [2022-11-18 20:38:30,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:38:30,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:38:30,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:30,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:38:30,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:38:30,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:30" (1/1) ... [2022-11-18 20:38:30,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd35077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:30, skipping insertion in model container [2022-11-18 20:38:30,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:38:30" (1/1) ... [2022-11-18 20:38:30,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:38:31,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:38:33,605 WARN L234 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_35569387-0218-4ac6-965a-6d8481012aa2/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c[380323,380336] [2022-11-18 20:38:33,637 WARN L234 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_35569387-0218-4ac6-965a-6d8481012aa2/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c[383339,383352] [2022-11-18 20:38:33,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:33,947 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:38:35,469 WARN L234 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_35569387-0218-4ac6-965a-6d8481012aa2/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c[380323,380336] [2022-11-18 20:38:35,491 WARN L234 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_35569387-0218-4ac6-965a-6d8481012aa2/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-1.c[383339,383352] [2022-11-18 20:38:35,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:38:35,590 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:38:35,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35 WrapperNode [2022-11-18 20:38:35,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:38:35,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:38:35,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:38:35,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:38:35,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:35,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:36,300 INFO L138 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 12856 [2022-11-18 20:38:36,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:38:36,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:38:36,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:38:36,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:38:36,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:36,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:36,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:36,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:36,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:36,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:36,936 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:36,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:37,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:38:37,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:38:37,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:38:37,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:38:37,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (1/1) ... [2022-11-18 20:38:37,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:38:37,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:37,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:38:37,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35569387-0218-4ac6-965a-6d8481012aa2/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:38:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:38:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-18 20:38:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-18 20:38:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 20:38:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 20:38:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-18 20:38:37,152 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-18 20:38:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-18 20:38:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-18 20:38:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-18 20:38:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-18 20:38:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-18 20:38:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-18 20:38:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-18 20:38:37,153 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-18 20:38:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:38:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:38:37,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:38:37,349 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:38:37,352 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:38:47,619 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:38:47,662 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:38:47,662 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-18 20:38:47,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:38:47 BoogieIcfgContainer [2022-11-18 20:38:47,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:38:47,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:38:47,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:38:47,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:38:47,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:38:30" (1/3) ... [2022-11-18 20:38:47,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c43552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:38:47, skipping insertion in model container [2022-11-18 20:38:47,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:38:35" (2/3) ... [2022-11-18 20:38:47,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62c43552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:38:47, skipping insertion in model container [2022-11-18 20:38:47,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:38:47" (3/3) ... [2022-11-18 20:38:47,689 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.06.cil-1.c [2022-11-18 20:38:47,713 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:38:47,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:38:47,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:38:47,859 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;@631c4c59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:38:47,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 20:38:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-18 20:38:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:38:47,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:47,902 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] [2022-11-18 20:38:47,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:47,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash 787057146, now seen corresponding path program 1 times [2022-11-18 20:38:47,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:47,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331239180] [2022-11-18 20:38:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:47,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:38:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:38:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:38:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:38:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:38:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:48,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:48,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331239180] [2022-11-18 20:38:48,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331239180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:48,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:48,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:38:48,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536609] [2022-11-18 20:38:48,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:48,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:38:48,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:48,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:38:48,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:38:48,450 INFO L87 Difference]: Start difference. First operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:38:50,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:50,221 INFO L93 Difference]: Finished difference Result 4911 states and 9054 transitions. [2022-11-18 20:38:50,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:38:50,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-18 20:38:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:50,265 INFO L225 Difference]: With dead ends: 4911 [2022-11-18 20:38:50,265 INFO L226 Difference]: Without dead ends: 2431 [2022-11-18 20:38:50,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:38:50,286 INFO L413 NwaCegarLoop]: 4249 mSDtfsCounter, 602 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 16576 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:50,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 16576 Invalid, 620 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [48 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:38:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2022-11-18 20:38:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2355. [2022-11-18 20:38:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2325 states have (on average 1.8391397849462365) internal successors, (4276), 2328 states have internal predecessors, (4276), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-18 20:38:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4318 transitions. [2022-11-18 20:38:50,458 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4318 transitions. Word has length 113 [2022-11-18 20:38:50,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:50,459 INFO L495 AbstractCegarLoop]: Abstraction has 2355 states and 4318 transitions. [2022-11-18 20:38:50,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:38:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4318 transitions. [2022-11-18 20:38:50,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:38:50,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:50,464 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] [2022-11-18 20:38:50,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:38:50,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:50,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1110439620, now seen corresponding path program 1 times [2022-11-18 20:38:50,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:50,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869277244] [2022-11-18 20:38:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:50,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:50,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:38:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:38:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:38:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:50,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:38:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:50,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:38:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:50,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:50,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869277244] [2022-11-18 20:38:50,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869277244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:50,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:50,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:38:50,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646746999] [2022-11-18 20:38:50,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:50,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:38:50,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:50,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:38:50,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:38:50,916 INFO L87 Difference]: Start difference. First operand 2355 states and 4318 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:38:54,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:54,191 INFO L93 Difference]: Finished difference Result 2966 states and 5298 transitions. [2022-11-18 20:38:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:38:54,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-18 20:38:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:54,219 INFO L225 Difference]: With dead ends: 2966 [2022-11-18 20:38:54,219 INFO L226 Difference]: Without dead ends: 2746 [2022-11-18 20:38:54,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:38:54,228 INFO L413 NwaCegarLoop]: 4321 mSDtfsCounter, 4803 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21342 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:54,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21342 Invalid, 2180 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 20:38:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-11-18 20:38:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2583. [2022-11-18 20:38:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2528 states have (on average 1.8184335443037976) internal successors, (4597), 2533 states have internal predecessors, (4597), 39 states have call successors, (39), 13 states have call predecessors, (39), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-11-18 20:38:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 4680 transitions. [2022-11-18 20:38:54,350 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 4680 transitions. Word has length 113 [2022-11-18 20:38:54,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:54,350 INFO L495 AbstractCegarLoop]: Abstraction has 2583 states and 4680 transitions. [2022-11-18 20:38:54,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:38:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 4680 transitions. [2022-11-18 20:38:54,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:38:54,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:54,355 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] [2022-11-18 20:38:54,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:38:54,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:54,356 INFO L85 PathProgramCache]: Analyzing trace with hash 240945598, now seen corresponding path program 1 times [2022-11-18 20:38:54,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:54,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298602383] [2022-11-18 20:38:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:54,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:38:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:38:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:38:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:38:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:38:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:54,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:54,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298602383] [2022-11-18 20:38:54,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298602383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:54,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:54,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:38:54,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026942380] [2022-11-18 20:38:54,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:54,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:38:54,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:54,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:38:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:38:54,696 INFO L87 Difference]: Start difference. First operand 2583 states and 4680 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:38:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:57,696 INFO L93 Difference]: Finished difference Result 3740 states and 6520 transitions. [2022-11-18 20:38:57,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:38:57,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-18 20:38:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:57,713 INFO L225 Difference]: With dead ends: 3740 [2022-11-18 20:38:57,714 INFO L226 Difference]: Without dead ends: 3294 [2022-11-18 20:38:57,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:38:57,718 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 4828 mSDsluCounter, 16958 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4841 SdHoareTripleChecker+Valid, 21254 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:57,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4841 Valid, 21254 Invalid, 2062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:38:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2022-11-18 20:38:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3003. [2022-11-18 20:38:57,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2904 states have (on average 1.7837465564738293) internal successors, (5180), 2911 states have internal predecessors, (5180), 69 states have call successors, (69), 25 states have call predecessors, (69), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2022-11-18 20:38:57,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 5333 transitions. [2022-11-18 20:38:57,866 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 5333 transitions. Word has length 113 [2022-11-18 20:38:57,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:57,867 INFO L495 AbstractCegarLoop]: Abstraction has 3003 states and 5333 transitions. [2022-11-18 20:38:57,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:38:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 5333 transitions. [2022-11-18 20:38:57,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:38:57,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:57,870 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] [2022-11-18 20:38:57,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:38:57,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:57,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1378029316, now seen corresponding path program 1 times [2022-11-18 20:38:57,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:57,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456075213] [2022-11-18 20:38:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:57,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:38:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:38:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:38:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:38:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:38:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:58,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:58,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456075213] [2022-11-18 20:38:58,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456075213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:58,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:58,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:38:58,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751537107] [2022-11-18 20:38:58,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:58,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:38:58,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:58,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:38:58,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:38:58,089 INFO L87 Difference]: Start difference. First operand 3003 states and 5333 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:01,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:01,111 INFO L93 Difference]: Finished difference Result 5254 states and 8905 transitions. [2022-11-18 20:39:01,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:39:01,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-18 20:39:01,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:01,135 INFO L225 Difference]: With dead ends: 5254 [2022-11-18 20:39:01,138 INFO L226 Difference]: Without dead ends: 4388 [2022-11-18 20:39:01,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:39:01,156 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 4803 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21339 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:01,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21339 Invalid, 2172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:39:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-11-18 20:39:01,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 3845. [2022-11-18 20:39:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3658 states have (on average 1.7353745215965009) internal successors, (6348), 3669 states have internal predecessors, (6348), 129 states have call successors, (129), 49 states have call predecessors, (129), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2022-11-18 20:39:01,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 6647 transitions. [2022-11-18 20:39:01,453 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 6647 transitions. Word has length 113 [2022-11-18 20:39:01,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:01,458 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 6647 transitions. [2022-11-18 20:39:01,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 6647 transitions. [2022-11-18 20:39:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:39:01,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:01,463 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] [2022-11-18 20:39:01,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:39:01,464 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:01,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2033428990, now seen corresponding path program 1 times [2022-11-18 20:39:01,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:01,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755206326] [2022-11-18 20:39:01,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:01,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:39:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:39:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:39:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:39:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:39:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:01,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:01,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755206326] [2022-11-18 20:39:01,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755206326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:01,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:01,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:39:01,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006284856] [2022-11-18 20:39:01,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:01,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:39:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:01,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:39:01,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:39:01,674 INFO L87 Difference]: Start difference. First operand 3845 states and 6647 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:04,977 INFO L93 Difference]: Finished difference Result 8280 states and 13689 transitions. [2022-11-18 20:39:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:39:04,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-18 20:39:04,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:05,022 INFO L225 Difference]: With dead ends: 8280 [2022-11-18 20:39:05,023 INFO L226 Difference]: Without dead ends: 6572 [2022-11-18 20:39:05,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:39:05,035 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 4803 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21339 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:05,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21339 Invalid, 2163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:39:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2022-11-18 20:39:05,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5535. [2022-11-18 20:39:05,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5535 states, 5172 states have (on average 1.6805877803557618) internal successors, (8692), 5191 states have internal predecessors, (8692), 249 states have call successors, (249), 97 states have call predecessors, (249), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2022-11-18 20:39:05,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 9301 transitions. [2022-11-18 20:39:05,652 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 9301 transitions. Word has length 113 [2022-11-18 20:39:05,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:05,652 INFO L495 AbstractCegarLoop]: Abstraction has 5535 states and 9301 transitions. [2022-11-18 20:39:05,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:05,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 9301 transitions. [2022-11-18 20:39:05,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:39:05,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:05,659 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] [2022-11-18 20:39:05,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:39:05,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2004928700, now seen corresponding path program 1 times [2022-11-18 20:39:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:05,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790409157] [2022-11-18 20:39:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:39:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:05,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:39:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:05,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:39:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:39:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:39:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:05,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:05,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790409157] [2022-11-18 20:39:05,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790409157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:05,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:05,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:39:05,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919838746] [2022-11-18 20:39:05,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:05,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:39:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:39:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:39:05,931 INFO L87 Difference]: Start difference. First operand 5535 states and 9301 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:09,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:09,338 INFO L93 Difference]: Finished difference Result 14330 states and 23313 transitions. [2022-11-18 20:39:09,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:39:09,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-18 20:39:09,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:09,393 INFO L225 Difference]: With dead ends: 14330 [2022-11-18 20:39:09,394 INFO L226 Difference]: Without dead ends: 10932 [2022-11-18 20:39:09,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:39:09,409 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 4803 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21339 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:09,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21339 Invalid, 2154 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:39:09,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2022-11-18 20:39:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 8929. [2022-11-18 20:39:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8929 states, 8214 states have (on average 1.6313610908205503) internal successors, (13400), 8249 states have internal predecessors, (13400), 489 states have call successors, (489), 193 states have call predecessors, (489), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2022-11-18 20:39:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8929 states to 8929 states and 14683 transitions. [2022-11-18 20:39:10,357 INFO L78 Accepts]: Start accepts. Automaton has 8929 states and 14683 transitions. Word has length 113 [2022-11-18 20:39:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:10,358 INFO L495 AbstractCegarLoop]: Abstraction has 8929 states and 14683 transitions. [2022-11-18 20:39:10,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:10,358 INFO L276 IsEmpty]: Start isEmpty. Operand 8929 states and 14683 transitions. [2022-11-18 20:39:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:39:10,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:10,365 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] [2022-11-18 20:39:10,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:39:10,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:10,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:10,371 INFO L85 PathProgramCache]: Analyzing trace with hash 64346686, now seen corresponding path program 1 times [2022-11-18 20:39:10,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:10,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965910444] [2022-11-18 20:39:10,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:10,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:10,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:39:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:39:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:10,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:39:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:10,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:39:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:39:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:10,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:10,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965910444] [2022-11-18 20:39:10,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965910444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:10,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:10,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:39:10,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849366039] [2022-11-18 20:39:10,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:10,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:39:10,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:10,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:39:10,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:39:10,613 INFO L87 Difference]: Start difference. First operand 8929 states and 14683 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:14,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:14,331 INFO L93 Difference]: Finished difference Result 26428 states and 42749 transitions. [2022-11-18 20:39:14,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:39:14,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-18 20:39:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:14,429 INFO L225 Difference]: With dead ends: 26428 [2022-11-18 20:39:14,430 INFO L226 Difference]: Without dead ends: 19636 [2022-11-18 20:39:14,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:39:14,473 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 4803 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21339 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:14,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21339 Invalid, 2145 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2083 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:39:14,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19636 states. [2022-11-18 20:39:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19636 to 15747. [2022-11-18 20:39:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 14328 states have (on average 1.5954773869346734) internal successors, (22860), 14395 states have internal predecessors, (22860), 969 states have call successors, (969), 385 states have call predecessors, (969), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2022-11-18 20:39:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25653 transitions. [2022-11-18 20:39:16,176 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25653 transitions. Word has length 113 [2022-11-18 20:39:16,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:16,176 INFO L495 AbstractCegarLoop]: Abstraction has 15747 states and 25653 transitions. [2022-11-18 20:39:16,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:16,177 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25653 transitions. [2022-11-18 20:39:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:39:16,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:16,189 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] [2022-11-18 20:39:16,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:39:16,190 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:16,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:16,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1941409916, now seen corresponding path program 1 times [2022-11-18 20:39:16,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:16,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271502227] [2022-11-18 20:39:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:16,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:39:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:39:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:39:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:39:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:16,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:39:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:16,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271502227] [2022-11-18 20:39:16,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271502227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:16,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:16,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:39:16,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405865942] [2022-11-18 20:39:16,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:16,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:39:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:16,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:39:16,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:39:16,398 INFO L87 Difference]: Start difference. First operand 15747 states and 25653 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:22,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:22,759 INFO L93 Difference]: Finished difference Result 56574 states and 91179 transitions. [2022-11-18 20:39:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:39:22,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-18 20:39:22,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:22,940 INFO L225 Difference]: With dead ends: 56574 [2022-11-18 20:39:22,940 INFO L226 Difference]: Without dead ends: 42964 [2022-11-18 20:39:22,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:39:22,999 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 5061 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 21329 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:22,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5081 Valid, 21329 Invalid, 2129 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [67 Valid, 2062 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 20:39:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42964 states. [2022-11-18 20:39:25,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42964 to 29253. [2022-11-18 20:39:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29253 states, 26490 states have (on average 1.575839939599849) internal successors, (41744), 26621 states have internal predecessors, (41744), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2022-11-18 20:39:25,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29253 states to 29253 states and 47915 transitions. [2022-11-18 20:39:25,444 INFO L78 Accepts]: Start accepts. Automaton has 29253 states and 47915 transitions. Word has length 113 [2022-11-18 20:39:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:25,445 INFO L495 AbstractCegarLoop]: Abstraction has 29253 states and 47915 transitions. [2022-11-18 20:39:25,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 29253 states and 47915 transitions. [2022-11-18 20:39:25,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:39:25,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:25,468 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] [2022-11-18 20:39:25,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:39:25,469 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:25,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:25,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1170676350, now seen corresponding path program 1 times [2022-11-18 20:39:25,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:25,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256621036] [2022-11-18 20:39:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:25,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:39:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:39:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:25,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:39:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:25,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:39:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:39:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:25,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:25,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256621036] [2022-11-18 20:39:25,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256621036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:25,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:25,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:39:25,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788430786] [2022-11-18 20:39:25,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:25,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:39:25,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:39:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:39:25,726 INFO L87 Difference]: Start difference. First operand 29253 states and 47915 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:36,361 INFO L93 Difference]: Finished difference Result 107011 states and 175039 transitions. [2022-11-18 20:39:36,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:39:36,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-18 20:39:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:36,936 INFO L225 Difference]: With dead ends: 107011 [2022-11-18 20:39:36,937 INFO L226 Difference]: Without dead ends: 79895 [2022-11-18 20:39:37,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:39:37,034 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 4996 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5016 SdHoareTripleChecker+Valid, 21329 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:37,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5016 Valid, 21329 Invalid, 2074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 20:39:37,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79895 states. [2022-11-18 20:39:42,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79895 to 56327. [2022-11-18 20:39:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56327 states, 50940 states have (on average 1.5670985473105614) internal successors, (79828), 51199 states have internal predecessors, (79828), 3593 states have call successors, (3593), 1537 states have call predecessors, (3593), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2022-11-18 20:39:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56327 states to 56327 states and 94085 transitions. [2022-11-18 20:39:43,051 INFO L78 Accepts]: Start accepts. Automaton has 56327 states and 94085 transitions. Word has length 113 [2022-11-18 20:39:43,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:43,052 INFO L495 AbstractCegarLoop]: Abstraction has 56327 states and 94085 transitions. [2022-11-18 20:39:43,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:39:43,053 INFO L276 IsEmpty]: Start isEmpty. Operand 56327 states and 94085 transitions. [2022-11-18 20:39:43,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:39:43,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:43,107 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] [2022-11-18 20:39:43,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:39:43,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:43,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:43,108 INFO L85 PathProgramCache]: Analyzing trace with hash 584400128, now seen corresponding path program 1 times [2022-11-18 20:39:43,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:43,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196518035] [2022-11-18 20:39:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:43,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:43,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:39:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:39:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:39:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:43,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:39:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:39:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:39:43,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:43,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196518035] [2022-11-18 20:39:43,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196518035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:43,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:43,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:39:43,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988510805] [2022-11-18 20:39:43,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:43,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:39:43,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:43,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:39:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:39:43,338 INFO L87 Difference]: Start difference. First operand 56327 states and 94085 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)