./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_running-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_running-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8 --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 b155d36c818668577415bbab4913364c1907de6bd1c1c9e0d185f4f2f125b180 --- 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-2329fc7 [2022-12-13 13:29:14,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:29:14,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:29:14,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:29:14,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:29:14,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:29:14,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:29:14,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:29:14,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:29:14,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:29:14,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:29:14,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:29:14,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:29:14,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:29:14,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:29:14,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:29:14,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:29:14,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:29:14,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:29:14,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:29:14,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:29:14,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:29:14,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:29:14,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:29:14,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:29:14,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:29:14,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:29:14,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:29:14,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:29:14,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:29:14,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:29:14,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:29:14,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:29:14,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:29:14,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:29:14,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:29:14,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:29:14,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:29:14,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:29:14,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:29:14,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:29:14,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:29:14,642 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:29:14,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:29:14,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:29:14,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:29:14,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:29:14,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:29:14,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:29:14,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:29:14,645 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:29:14,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:29:14,645 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:29:14,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:29:14,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:29:14,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:29:14,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:29:14,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:29:14,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:29:14,646 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:29:14,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:29:14,647 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:29:14,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:29:14,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:29:14,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:29:14,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:29:14,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:29:14,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:29:14,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:29:14,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:29:14,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:29:14,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:29:14,649 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:29:14,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:29:14,649 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:29:14,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:29:14,649 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:29:14,649 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b155d36c818668577415bbab4913364c1907de6bd1c1c9e0d185f4f2f125b180 [2022-12-13 13:29:14,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:29:14,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:29:14,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:29:14,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:29:14,857 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:29:14,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-examples/standard_running-2.i [2022-12-13 13:29:17,460 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:29:17,625 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:29:17,625 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/sv-benchmarks/c/array-examples/standard_running-2.i [2022-12-13 13:29:17,629 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/data/cd363fc82/1977829339c14656ba9317af656f46c1/FLAGc0ff3fea5 [2022-12-13 13:29:17,641 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/data/cd363fc82/1977829339c14656ba9317af656f46c1 [2022-12-13 13:29:17,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:29:17,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:29:17,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:29:17,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:29:17,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:29:17,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4128a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17, skipping insertion in model container [2022-12-13 13:29:17,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:29:17,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:29:17,783 WARN L237 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_504905aa-cd7d-4cbf-b138-097b529507c8/sv-benchmarks/c/array-examples/standard_running-2.i[811,824] [2022-12-13 13:29:17,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:29:17,807 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:29:17,820 WARN L237 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_504905aa-cd7d-4cbf-b138-097b529507c8/sv-benchmarks/c/array-examples/standard_running-2.i[811,824] [2022-12-13 13:29:17,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:29:17,841 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:29:17,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17 WrapperNode [2022-12-13 13:29:17,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:29:17,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:29:17,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:29:17,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:29:17,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,870 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-12-13 13:29:17,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:29:17,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:29:17,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:29:17,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:29:17,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:29:17,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:29:17,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:29:17,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:29:17,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (1/1) ... [2022-12-13 13:29:17,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:29:17,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:17,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:29:17,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:29:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:29:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:29:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:29:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:29:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:29:17,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:29:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:29:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:29:18,012 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:29:18,014 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:29:18,142 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:29:18,148 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:29:18,148 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 13:29:18,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:29:18 BoogieIcfgContainer [2022-12-13 13:29:18,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:29:18,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:29:18,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:29:18,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:29:18,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:29:17" (1/3) ... [2022-12-13 13:29:18,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498069de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:29:18, skipping insertion in model container [2022-12-13 13:29:18,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:29:17" (2/3) ... [2022-12-13 13:29:18,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498069de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:29:18, skipping insertion in model container [2022-12-13 13:29:18,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:29:18" (3/3) ... [2022-12-13 13:29:18,162 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_running-2.i [2022-12-13 13:29:18,183 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:29:18,183 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:29:18,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:29:18,261 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;@5d3fc129, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:29:18,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:29:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 13:29:18,279 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:18,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:18,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2030235279, now seen corresponding path program 1 times [2022-12-13 13:29:18,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:18,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568646005] [2022-12-13 13:29:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:18,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:29:18,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:18,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568646005] [2022-12-13 13:29:18,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568646005] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:18,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:29:18,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:29:18,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715161157] [2022-12-13 13:29:18,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:18,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:29:18,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:18,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:29:18,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:29:18,466 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:18,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:18,531 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2022-12-13 13:29:18,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:29:18,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 13:29:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:18,539 INFO L225 Difference]: With dead ends: 56 [2022-12-13 13:29:18,539 INFO L226 Difference]: Without dead ends: 32 [2022-12-13 13:29:18,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:29:18,544 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:18,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:29:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-13 13:29:18,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-12-13 13:29:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-12-13 13:29:18,568 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 10 [2022-12-13 13:29:18,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:18,569 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-12-13 13:29:18,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-12-13 13:29:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 13:29:18,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:18,570 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] [2022-12-13 13:29:18,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:29:18,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:18,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1221461665, now seen corresponding path program 1 times [2022-12-13 13:29:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:18,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965706128] [2022-12-13 13:29:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:29:18,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:18,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965706128] [2022-12-13 13:29:18,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965706128] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:18,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939961912] [2022-12-13 13:29:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:18,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:18,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:18,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:18,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:29:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:18,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:29:18,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:29:18,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:29:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:29:18,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939961912] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:29:18,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:29:18,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 13:29:18,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955397264] [2022-12-13 13:29:18,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:29:18,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:29:18,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:18,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:29:18,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:29:18,791 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:18,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:18,880 INFO L93 Difference]: Finished difference Result 77 states and 114 transitions. [2022-12-13 13:29:18,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:29:18,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-12-13 13:29:18,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:18,882 INFO L225 Difference]: With dead ends: 77 [2022-12-13 13:29:18,882 INFO L226 Difference]: Without dead ends: 59 [2022-12-13 13:29:18,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:29:18,884 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 145 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:18,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 38 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:29:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-13 13:29:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-12-13 13:29:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.396551724137931) internal successors, (81), 58 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2022-12-13 13:29:18,890 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 22 [2022-12-13 13:29:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:18,891 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2022-12-13 13:29:18,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:18,891 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2022-12-13 13:29:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 13:29:18,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:18,892 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:18,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:29:19,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:19,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:19,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1687151938, now seen corresponding path program 2 times [2022-12-13 13:29:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:19,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995853835] [2022-12-13 13:29:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:19,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-13 13:29:19,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:19,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995853835] [2022-12-13 13:29:19,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995853835] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:29:19,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:29:19,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:29:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915357142] [2022-12-13 13:29:19,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:29:19,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:29:19,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:29:19,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:29:19,427 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:19,485 INFO L93 Difference]: Finished difference Result 111 states and 162 transitions. [2022-12-13 13:29:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:29:19,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-13 13:29:19,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:19,487 INFO L225 Difference]: With dead ends: 111 [2022-12-13 13:29:19,487 INFO L226 Difference]: Without dead ends: 83 [2022-12-13 13:29:19,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:29:19,489 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:19,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 51 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:29:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-12-13 13:29:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2022-12-13 13:29:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.364864864864865) internal successors, (101), 74 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 101 transitions. [2022-12-13 13:29:19,501 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 101 transitions. Word has length 58 [2022-12-13 13:29:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:19,501 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 101 transitions. [2022-12-13 13:29:19,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 101 transitions. [2022-12-13 13:29:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 13:29:19,502 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:19,502 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:19,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:29:19,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:19,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1354664638, now seen corresponding path program 1 times [2022-12-13 13:29:19,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:19,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46217656] [2022-12-13 13:29:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:19,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-13 13:29:19,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:19,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46217656] [2022-12-13 13:29:19,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46217656] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:19,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973890312] [2022-12-13 13:29:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:19,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:19,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:19,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:19,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:29:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:19,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:29:19,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-13 13:29:19,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:29:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-13 13:29:19,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973890312] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:29:19,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:29:19,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 13:29:19,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509121395] [2022-12-13 13:29:19,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:29:19,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 13:29:19,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 13:29:19,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:29:19,780 INFO L87 Difference]: Start difference. First operand 75 states and 101 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:19,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:19,964 INFO L93 Difference]: Finished difference Result 235 states and 340 transitions. [2022-12-13 13:29:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 13:29:19,965 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-13 13:29:19,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:19,966 INFO L225 Difference]: With dead ends: 235 [2022-12-13 13:29:19,966 INFO L226 Difference]: Without dead ends: 171 [2022-12-13 13:29:19,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:29:19,968 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 236 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:19,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 88 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:29:19,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-13 13:29:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-12-13 13:29:19,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.3705882352941177) internal successors, (233), 170 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 233 transitions. [2022-12-13 13:29:19,982 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 233 transitions. Word has length 58 [2022-12-13 13:29:19,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:19,983 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 233 transitions. [2022-12-13 13:29:19,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 233 transitions. [2022-12-13 13:29:19,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 13:29:19,986 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:19,986 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:19,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:29:20,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:20,188 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:20,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1703650066, now seen corresponding path program 2 times [2022-12-13 13:29:20,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:20,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589504392] [2022-12-13 13:29:20,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:20,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2022-12-13 13:29:20,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:20,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589504392] [2022-12-13 13:29:20,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589504392] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:20,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903221371] [2022-12-13 13:29:20,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:29:20,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:20,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:20,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:20,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:29:20,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:29:20,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:29:20,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 13:29:20,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2022-12-13 13:29:20,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:29:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2022-12-13 13:29:20,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903221371] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:29:20,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:29:20,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-12-13 13:29:20,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93130802] [2022-12-13 13:29:20,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:29:20,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 13:29:20,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 13:29:20,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 13:29:20,897 INFO L87 Difference]: Start difference. First operand 171 states and 233 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:21,304 INFO L93 Difference]: Finished difference Result 511 states and 742 transitions. [2022-12-13 13:29:21,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 13:29:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-12-13 13:29:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:21,307 INFO L225 Difference]: With dead ends: 511 [2022-12-13 13:29:21,307 INFO L226 Difference]: Without dead ends: 363 [2022-12-13 13:29:21,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 13:29:21,309 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 886 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:21,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 152 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 13:29:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-12-13 13:29:21,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2022-12-13 13:29:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.37292817679558) internal successors, (497), 362 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 497 transitions. [2022-12-13 13:29:21,324 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 497 transitions. Word has length 130 [2022-12-13 13:29:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:21,324 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 497 transitions. [2022-12-13 13:29:21,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:21,324 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 497 transitions. [2022-12-13 13:29:21,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-12-13 13:29:21,327 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:21,327 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:21,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:29:21,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:21,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:21,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:21,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1176972730, now seen corresponding path program 3 times [2022-12-13 13:29:21,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:21,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344311815] [2022-12-13 13:29:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:21,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2022-12-13 13:29:22,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:22,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344311815] [2022-12-13 13:29:22,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344311815] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:22,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951507084] [2022-12-13 13:29:22,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:29:22,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:22,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:22,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:22,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:29:22,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 13:29:22,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:29:22,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 13:29:22,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:22,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 13:29:23,590 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:29:23,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2022-12-13 13:29:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 85 proven. 127 refuted. 0 times theorem prover too weak. 2626 trivial. 0 not checked. [2022-12-13 13:29:23,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:29:24,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-12-13 13:29:24,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2022-12-13 13:29:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 64 proven. 148 refuted. 0 times theorem prover too weak. 2626 trivial. 0 not checked. [2022-12-13 13:29:24,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951507084] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:29:24,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:29:24,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 37 [2022-12-13 13:29:24,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751620570] [2022-12-13 13:29:24,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:29:24,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 13:29:24,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:24,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 13:29:24,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=818, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 13:29:24,936 INFO L87 Difference]: Start difference. First operand 363 states and 497 transitions. Second operand has 37 states, 37 states have (on average 2.864864864864865) internal successors, (106), 37 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:27,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:27,457 INFO L93 Difference]: Finished difference Result 1082 states and 1532 transitions. [2022-12-13 13:29:27,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-12-13 13:29:27,458 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.864864864864865) internal successors, (106), 37 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2022-12-13 13:29:27,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:27,461 INFO L225 Difference]: With dead ends: 1082 [2022-12-13 13:29:27,461 INFO L226 Difference]: Without dead ends: 766 [2022-12-13 13:29:27,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 534 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3099 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3676, Invalid=8534, Unknown=0, NotChecked=0, Total=12210 [2022-12-13 13:29:27,465 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2340 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2340 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:27,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2340 Valid, 232 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 13:29:27,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-12-13 13:29:27,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 690. [2022-12-13 13:29:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 1.4063860667634251) internal successors, (969), 689 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 969 transitions. [2022-12-13 13:29:27,487 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 969 transitions. Word has length 274 [2022-12-13 13:29:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:27,488 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 969 transitions. [2022-12-13 13:29:27,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.864864864864865) internal successors, (106), 37 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 969 transitions. [2022-12-13 13:29:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-12-13 13:29:27,492 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:27,492 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:27,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:29:27,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:27,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:27,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:27,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2005252399, now seen corresponding path program 1 times [2022-12-13 13:29:27,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:27,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294452281] [2022-12-13 13:29:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:27,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 3050 trivial. 0 not checked. [2022-12-13 13:29:28,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:28,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294452281] [2022-12-13 13:29:28,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294452281] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:28,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221703585] [2022-12-13 13:29:28,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:28,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:28,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:28,472 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:28,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:29:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:28,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 13:29:28,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 3050 trivial. 0 not checked. [2022-12-13 13:29:28,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:29:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 3050 trivial. 0 not checked. [2022-12-13 13:29:29,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221703585] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:29:29,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:29:29,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2022-12-13 13:29:29,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016685405] [2022-12-13 13:29:29,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:29:29,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-13 13:29:29,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-13 13:29:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2022-12-13 13:29:29,284 INFO L87 Difference]: Start difference. First operand 690 states and 969 transitions. Second operand has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:30,370 INFO L93 Difference]: Finished difference Result 2390 states and 3379 transitions. [2022-12-13 13:29:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-13 13:29:30,371 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-12-13 13:29:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:30,374 INFO L225 Difference]: With dead ends: 2390 [2022-12-13 13:29:30,374 INFO L226 Difference]: Without dead ends: 1753 [2022-12-13 13:29:30,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2022-12-13 13:29:30,376 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2147 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:30,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2147 Valid, 342 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 13:29:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2022-12-13 13:29:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1419. [2022-12-13 13:29:30,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 1.4069111424541607) internal successors, (1995), 1418 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1995 transitions. [2022-12-13 13:29:30,411 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1995 transitions. Word has length 310 [2022-12-13 13:29:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:30,411 INFO L495 AbstractCegarLoop]: Abstraction has 1419 states and 1995 transitions. [2022-12-13 13:29:30,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:30,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1995 transitions. [2022-12-13 13:29:30,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2022-12-13 13:29:30,426 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:30,426 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:30,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:29:30,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 13:29:30,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:30,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1627801764, now seen corresponding path program 2 times [2022-12-13 13:29:30,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:30,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132327987] [2022-12-13 13:29:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:30,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16068 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 13364 trivial. 0 not checked. [2022-12-13 13:29:33,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:33,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132327987] [2022-12-13 13:29:33,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132327987] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:33,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535595357] [2022-12-13 13:29:33,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:29:33,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:33,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:33,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:33,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:29:33,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:29:33,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:29:33,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-13 13:29:33,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 16068 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 13364 trivial. 0 not checked. [2022-12-13 13:29:34,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:29:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16068 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 13364 trivial. 0 not checked. [2022-12-13 13:29:36,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535595357] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:29:36,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:29:36,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 109 [2022-12-13 13:29:36,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632031784] [2022-12-13 13:29:36,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:29:36,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2022-12-13 13:29:36,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:29:36,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2022-12-13 13:29:36,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2022-12-13 13:29:36,514 INFO L87 Difference]: Start difference. First operand 1419 states and 1995 transitions. Second operand has 109 states, 109 states have (on average 2.146788990825688) internal successors, (234), 109 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:29:43,192 INFO L93 Difference]: Finished difference Result 4847 states and 6862 transitions. [2022-12-13 13:29:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-12-13 13:29:43,193 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.146788990825688) internal successors, (234), 109 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 634 [2022-12-13 13:29:43,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:29:43,203 INFO L225 Difference]: With dead ends: 4847 [2022-12-13 13:29:43,203 INFO L226 Difference]: Without dead ends: 3535 [2022-12-13 13:29:43,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1321 GetRequests, 1214 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2022-12-13 13:29:43,208 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5982 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1032 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5982 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1032 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:29:43,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5982 Valid, 660 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1032 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 13:29:43,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2022-12-13 13:29:43,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 2877. [2022-12-13 13:29:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2876 states have (on average 1.407162726008345) internal successors, (4047), 2876 states have internal predecessors, (4047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 4047 transitions. [2022-12-13 13:29:43,298 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 4047 transitions. Word has length 634 [2022-12-13 13:29:43,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:29:43,298 INFO L495 AbstractCegarLoop]: Abstraction has 2877 states and 4047 transitions. [2022-12-13 13:29:43,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 2.146788990825688) internal successors, (234), 109 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:29:43,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 4047 transitions. [2022-12-13 13:29:43,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1283 [2022-12-13 13:29:43,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:29:43,309 INFO L195 NwaCegarLoop]: trace histogram [106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 106, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:29:43,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:29:43,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:43,509 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:29:43,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:29:43,510 INFO L85 PathProgramCache]: Analyzing trace with hash 955499952, now seen corresponding path program 3 times [2022-12-13 13:29:43,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:29:43,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030116853] [2022-12-13 13:29:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:29:43,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:29:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:29:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 67098 backedges. 0 proven. 11236 refuted. 0 times theorem prover too weak. 55862 trivial. 0 not checked. [2022-12-13 13:29:57,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:29:57,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030116853] [2022-12-13 13:29:57,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030116853] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:29:57,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438952902] [2022-12-13 13:29:57,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:29:57,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:29:57,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:29:57,524 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:29:57,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:29:57,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 13:29:57,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:29:57,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 13:29:57,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:29:57,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 13:29:57,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 13:30:03,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:30:03,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 46 [2022-12-13 13:30:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 67098 backedges. 524 proven. 1362 refuted. 0 times theorem prover too weak. 65212 trivial. 0 not checked. [2022-12-13 13:30:03,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:30:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 67098 backedges. 523 proven. 1363 refuted. 0 times theorem prover too weak. 65212 trivial. 0 not checked. [2022-12-13 13:30:08,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438952902] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:30:08,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:30:08,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 13, 12] total 128 [2022-12-13 13:30:08,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875108936] [2022-12-13 13:30:08,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:30:08,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-12-13 13:30:08,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:30:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-12-13 13:30:08,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7257, Invalid=8999, Unknown=0, NotChecked=0, Total=16256 [2022-12-13 13:30:08,534 INFO L87 Difference]: Start difference. First operand 2877 states and 4047 transitions. Second operand has 128 states, 128 states have (on average 2.265625) internal successors, (290), 128 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:31:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:31:57,247 INFO L93 Difference]: Finished difference Result 8917 states and 12652 transitions. [2022-12-13 13:31:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 786 states. [2022-12-13 13:31:57,248 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.265625) internal successors, (290), 128 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1282 [2022-12-13 13:31:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:31:57,257 INFO L225 Difference]: With dead ends: 8917 [2022-12-13 13:31:57,257 INFO L226 Difference]: Without dead ends: 6255 [2022-12-13 13:31:57,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3449 GetRequests, 2651 SyntacticMatches, 3 SemanticMatches, 795 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237654 ImplicationChecksByTransitivity, 69.7s TimeCoverageRelationStatistics Valid=121919, Invalid=512493, Unknown=0, NotChecked=0, Total=634412 [2022-12-13 13:31:57,298 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19424 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 4137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19424 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 5531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4137 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 13:31:57,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19424 Valid, 767 Invalid, 5531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4137 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 13:31:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6255 states. [2022-12-13 13:31:57,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6255 to 5421. [2022-12-13 13:31:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5421 states, 5420 states have (on average 1.4282287822878228) internal successors, (7741), 5420 states have internal predecessors, (7741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:31:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5421 states to 5421 states and 7741 transitions. [2022-12-13 13:31:57,409 INFO L78 Accepts]: Start accepts. Automaton has 5421 states and 7741 transitions. Word has length 1282 [2022-12-13 13:31:57,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:31:57,409 INFO L495 AbstractCegarLoop]: Abstraction has 5421 states and 7741 transitions. [2022-12-13 13:31:57,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.265625) internal successors, (290), 128 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:31:57,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5421 states and 7741 transitions. [2022-12-13 13:31:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1331 [2022-12-13 13:31:57,422 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:31:57,423 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 108, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:31:57,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 13:31:57,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:31:57,624 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:31:57,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:31:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1658309430, now seen corresponding path program 4 times [2022-12-13 13:31:57,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:31:57,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065878358] [2022-12-13 13:31:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:31:57,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:31:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:32:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 72270 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 60170 trivial. 0 not checked. [2022-12-13 13:32:12,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:32:12,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065878358] [2022-12-13 13:32:12,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065878358] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:32:12,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426042844] [2022-12-13 13:32:12,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:32:12,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:32:12,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:32:12,158 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:32:12,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_504905aa-cd7d-4cbf-b138-097b529507c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:32:12,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:32:12,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:32:12,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 2541 conjuncts, 458 conjunts are in the unsatisfiable core [2022-12-13 13:32:12,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:32:15,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 13:32:15,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 13:32:15,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 13:32:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 72270 backedges. 2040 proven. 58113 refuted. 0 times theorem prover too weak. 12117 trivial. 0 not checked. [2022-12-13 13:32:29,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:32:50,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2022-12-13 13:32:50,060 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:32:50,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 286 treesize of output 270 [2022-12-13 13:33:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 72270 backedges. 546 proven. 59624 refuted. 0 times theorem prover too weak. 12100 trivial. 0 not checked. [2022-12-13 13:33:08,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426042844] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:33:08,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:33:08,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 223, 228] total 559 [2022-12-13 13:33:08,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936994744] [2022-12-13 13:33:08,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:33:08,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 559 states [2022-12-13 13:33:08,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:33:08,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 559 interpolants. [2022-12-13 13:33:08,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27186, Invalid=284736, Unknown=0, NotChecked=0, Total=311922 [2022-12-13 13:33:08,099 INFO L87 Difference]: Start difference. First operand 5421 states and 7741 transitions. Second operand has 559 states, 559 states have (on average 4.34525939177102) internal successors, (2429), 559 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)