./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN --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 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 --- 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-6b4ec56 [2022-11-20 10:46:59,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:46:59,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:46:59,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:46:59,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:46:59,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:46:59,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:46:59,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:46:59,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:46:59,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:46:59,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:46:59,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:46:59,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:46:59,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:46:59,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:46:59,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:46:59,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:46:59,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:46:59,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:46:59,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:46:59,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:46:59,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:46:59,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:46:59,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:46:59,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:46:59,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:46:59,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:46:59,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:46:59,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:46:59,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:46:59,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:46:59,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:46:59,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:46:59,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:46:59,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:46:59,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:46:59,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:46:59,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:46:59,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:46:59,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:46:59,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:46:59,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:46:59,131 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:46:59,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:46:59,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:46:59,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:46:59,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:46:59,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:46:59,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:46:59,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:46:59,135 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:46:59,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:46:59,136 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:46:59,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:46:59,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:46:59,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:46:59,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:46:59,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:46:59,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:46:59,138 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:46:59,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:46:59,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:46:59,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:46:59,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:46:59,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:46:59,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:46:59,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:46:59,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:46:59,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:46:59,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:46:59,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:46:59,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:46:59,142 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:46:59,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:46:59,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:46:59,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b4637ab5710a1ca22a981e8047278048fbbf856825d3649b2cb9d48de11d175 [2022-11-20 10:46:59,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:46:59,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:46:59,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:46:59,475 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:46:59,476 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:46:59,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i [2022-11-20 10:47:02,658 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:47:02,998 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:47:02,999 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i [2022-11-20 10:47:03,017 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/data/017b7e882/4dca56d9aa734257ace3cb78f9401537/FLAG3b15280ac [2022-11-20 10:47:03,037 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/data/017b7e882/4dca56d9aa734257ace3cb78f9401537 [2022-11-20 10:47:03,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:47:03,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:47:03,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:47:03,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:47:03,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:47:03,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03, skipping insertion in model container [2022-11-20 10:47:03,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:47:03,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:47:03,504 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_527ec0e3-433a-4232-84b9-ef5e95973f2a/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i[23974,23987] [2022-11-20 10:47:03,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:47:03,523 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:47:03,563 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_527ec0e3-433a-4232-84b9-ef5e95973f2a/sv-benchmarks/c/list-ext3-properties/dll_nullified-2.i[23974,23987] [2022-11-20 10:47:03,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:47:03,595 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:47:03,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03 WrapperNode [2022-11-20 10:47:03,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:47:03,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:47:03,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:47:03,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:47:03,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,647 INFO L138 Inliner]: procedures = 122, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 108 [2022-11-20 10:47:03,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:47:03,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:47:03,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:47:03,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:47:03,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,684 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:47:03,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:47:03,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:47:03,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:47:03,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (1/1) ... [2022-11-20 10:47:03,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:47:03,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:03,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:47:03,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:47:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:47:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:47:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:47:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:47:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:47:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:47:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:47:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:47:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:47:03,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:47:03,999 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:47:04,002 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:47:04,231 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:47:04,237 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:47:04,238 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 10:47:04,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:47:04 BoogieIcfgContainer [2022-11-20 10:47:04,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:47:04,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:47:04,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:47:04,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:47:04,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:47:03" (1/3) ... [2022-11-20 10:47:04,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3046f5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:47:04, skipping insertion in model container [2022-11-20 10:47:04,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:03" (2/3) ... [2022-11-20 10:47:04,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3046f5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:47:04, skipping insertion in model container [2022-11-20 10:47:04,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:47:04" (3/3) ... [2022-11-20 10:47:04,250 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_nullified-2.i [2022-11-20 10:47:04,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:47:04,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:47:04,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:47:04,323 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;@1b097171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:47:04,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:47:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:04,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 10:47:04,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:04,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:04,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:47:04,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:04,342 INFO L85 PathProgramCache]: Analyzing trace with hash -91270904, now seen corresponding path program 1 times [2022-11-20 10:47:04,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:04,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788809855] [2022-11-20 10:47:04,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:04,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:04,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:04,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788809855] [2022-11-20 10:47:04,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788809855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:04,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:04,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:47:04,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955527583] [2022-11-20 10:47:04,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:04,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:47:04,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:47:04,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:47:04,692 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 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 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:04,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:04,756 INFO L93 Difference]: Finished difference Result 52 states and 78 transitions. [2022-11-20 10:47:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:47:04,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2022-11-20 10:47:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:04,766 INFO L225 Difference]: With dead ends: 52 [2022-11-20 10:47:04,767 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 10:47:04,769 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 [2022-11-20 10:47:04,773 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:04,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 66 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:47:04,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 10:47:04,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-20 10:47:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:04,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-11-20 10:47:04,810 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 12 [2022-11-20 10:47:04,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:04,811 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-11-20 10:47:04,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-11-20 10:47:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:47:04,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:04,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:04,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:47:04,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:47:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:04,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1034399597, now seen corresponding path program 1 times [2022-11-20 10:47:04,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:04,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140575863] [2022-11-20 10:47:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:04,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:05,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:05,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140575863] [2022-11-20 10:47:05,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140575863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:05,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:05,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:47:05,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294542916] [2022-11-20 10:47:05,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:05,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:47:05,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:05,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:47:05,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:47:05,038 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:05,095 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-11-20 10:47:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:47:05,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 10:47:05,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:05,097 INFO L225 Difference]: With dead ends: 47 [2022-11-20 10:47:05,098 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 10:47:05,102 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 [2022-11-20 10:47:05,105 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:05,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:47:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 10:47:05,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-11-20 10:47:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-11-20 10:47:05,118 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 17 [2022-11-20 10:47:05,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:05,122 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-11-20 10:47:05,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:05,123 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-11-20 10:47:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:47:05,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:05,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:05,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:47:05,127 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:47:05,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:05,130 INFO L85 PathProgramCache]: Analyzing trace with hash -776234159, now seen corresponding path program 1 times [2022-11-20 10:47:05,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:05,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945385176] [2022-11-20 10:47:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:05,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:05,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945385176] [2022-11-20 10:47:05,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945385176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:47:05,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:47:05,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:47:05,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734084290] [2022-11-20 10:47:05,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:47:05,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:47:05,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:47:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:47:05,549 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:05,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:05,891 INFO L93 Difference]: Finished difference Result 71 states and 98 transitions. [2022-11-20 10:47:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:47:05,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-20 10:47:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:05,893 INFO L225 Difference]: With dead ends: 71 [2022-11-20 10:47:05,893 INFO L226 Difference]: Without dead ends: 58 [2022-11-20 10:47:05,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:47:05,895 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 135 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:05,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 109 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:47:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-20 10:47:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. [2022-11-20 10:47:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-11-20 10:47:05,903 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 17 [2022-11-20 10:47:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:05,903 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-11-20 10:47:05,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-11-20 10:47:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:47:05,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:05,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:05,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:47:05,906 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:47:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:05,906 INFO L85 PathProgramCache]: Analyzing trace with hash -774387117, now seen corresponding path program 1 times [2022-11-20 10:47:05,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:05,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031699943] [2022-11-20 10:47:05,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:05,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:06,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:06,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031699943] [2022-11-20 10:47:06,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031699943] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:06,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220078439] [2022-11-20 10:47:06,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:06,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:06,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:06,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:06,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:47:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:06,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:47:06,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:06,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:06,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220078439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:06,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:47:06,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-20 10:47:06,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979696227] [2022-11-20 10:47:06,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:06,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:47:06,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:47:06,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:47:06,243 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:06,269 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2022-11-20 10:47:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:47:06,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 17 [2022-11-20 10:47:06,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:06,271 INFO L225 Difference]: With dead ends: 69 [2022-11-20 10:47:06,271 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 10:47:06,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:47:06,273 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:06,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 106 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:47:06,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 10:47:06,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2022-11-20 10:47:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-11-20 10:47:06,281 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 17 [2022-11-20 10:47:06,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:06,281 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-11-20 10:47:06,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-11-20 10:47:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 10:47:06,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:06,283 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:06,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:06,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:06,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:47:06,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:06,490 INFO L85 PathProgramCache]: Analyzing trace with hash -459646902, now seen corresponding path program 1 times [2022-11-20 10:47:06,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:06,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225648773] [2022-11-20 10:47:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:06,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:06,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:06,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225648773] [2022-11-20 10:47:06,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225648773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:06,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358980065] [2022-11-20 10:47:06,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:06,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:06,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:06,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:06,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:47:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:06,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:47:06,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:07,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:47:07,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358980065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:07,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:47:07,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-11-20 10:47:07,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498361309] [2022-11-20 10:47:07,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:07,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:47:07,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:47:07,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:47:07,141 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:07,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:07,167 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2022-11-20 10:47:07,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:47:07,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 32 [2022-11-20 10:47:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:07,169 INFO L225 Difference]: With dead ends: 72 [2022-11-20 10:47:07,169 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 10:47:07,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:47:07,171 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:07,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 66 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:47:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 10:47:07,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2022-11-20 10:47:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2022-11-20 10:47:07,178 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 32 [2022-11-20 10:47:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:07,178 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2022-11-20 10:47:07,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2022-11-20 10:47:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 10:47:07,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:07,180 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:07,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:07,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:07,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:47:07,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:07,391 INFO L85 PathProgramCache]: Analyzing trace with hash -910589295, now seen corresponding path program 2 times [2022-11-20 10:47:07,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:07,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339937336] [2022-11-20 10:47:07,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:07,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:47:08,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:08,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339937336] [2022-11-20 10:47:08,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339937336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:08,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117789129] [2022-11-20 10:47:08,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:47:08,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:08,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:08,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:08,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:47:08,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:47:08,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:47:08,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 10:47:08,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:08,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:47:08,519 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:47:08,522 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 11 treesize of output 11 [2022-11-20 10:47:08,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:08,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:08,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:08,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:08,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 44 [2022-11-20 10:47:08,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-20 10:47:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:47:08,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:08,982 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:08,983 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 59 [2022-11-20 10:47:08,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:08,995 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 40 treesize of output 26 [2022-11-20 10:47:09,005 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 5 treesize of output 3 [2022-11-20 10:47:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:47:09,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117789129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:09,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:47:09,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-20 10:47:09,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070844909] [2022-11-20 10:47:09,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:09,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:47:09,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:09,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:47:09,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=321, Unknown=5, NotChecked=0, Total=380 [2022-11-20 10:47:09,060 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:09,936 INFO L93 Difference]: Finished difference Result 83 states and 110 transitions. [2022-11-20 10:47:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:47:09,937 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 37 [2022-11-20 10:47:09,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:09,937 INFO L225 Difference]: With dead ends: 83 [2022-11-20 10:47:09,938 INFO L226 Difference]: Without dead ends: 70 [2022-11-20 10:47:09,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=722, Unknown=6, NotChecked=0, Total=930 [2022-11-20 10:47:09,939 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 366 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:09,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 75 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 180 Invalid, 0 Unknown, 4 Unchecked, 0.5s Time] [2022-11-20 10:47:09,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-20 10:47:09,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 46. [2022-11-20 10:47:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-11-20 10:47:09,950 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 37 [2022-11-20 10:47:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:09,950 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-11-20 10:47:09,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-11-20 10:47:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 10:47:09,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:09,956 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:09,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:10,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:10,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:47:10,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:10,164 INFO L85 PathProgramCache]: Analyzing trace with hash -908742253, now seen corresponding path program 1 times [2022-11-20 10:47:10,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:10,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678546109] [2022-11-20 10:47:10,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:10,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 10:47:11,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:11,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678546109] [2022-11-20 10:47:11,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678546109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:11,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077526635] [2022-11-20 10:47:11,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:11,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:11,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:11,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:11,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:47:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:11,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 10:47:11,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:11,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:47:11,473 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:47:11,473 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 11 treesize of output 11 [2022-11-20 10:47:11,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:11,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:11,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:11,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:11,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 44 [2022-11-20 10:47:11,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-20 10:47:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:47:11,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:11,785 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1021 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1021) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 0)) is different from false [2022-11-20 10:47:11,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:11,811 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 61 [2022-11-20 10:47:11,819 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:11,819 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 46 treesize of output 28 [2022-11-20 10:47:11,825 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 7 treesize of output 3 [2022-11-20 10:47:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-20 10:47:11,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077526635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:11,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:47:11,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 26 [2022-11-20 10:47:11,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685235912] [2022-11-20 10:47:11,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:11,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 10:47:11,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:11,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 10:47:11,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=524, Unknown=1, NotChecked=46, Total=650 [2022-11-20 10:47:11,899 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:12,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:12,810 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2022-11-20 10:47:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:47:12,812 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 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 37 [2022-11-20 10:47:12,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:12,813 INFO L225 Difference]: With dead ends: 76 [2022-11-20 10:47:12,813 INFO L226 Difference]: Without dead ends: 63 [2022-11-20 10:47:12,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=252, Invalid=941, Unknown=1, NotChecked=66, Total=1260 [2022-11-20 10:47:12,814 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 420 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:12,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 133 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 246 Invalid, 0 Unknown, 59 Unchecked, 0.5s Time] [2022-11-20 10:47:12,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-20 10:47:12,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 49. [2022-11-20 10:47:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 48 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2022-11-20 10:47:12,829 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 37 [2022-11-20 10:47:12,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:12,831 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2022-11-20 10:47:12,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2022-11-20 10:47:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 10:47:12,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:12,838 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:12,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:13,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:13,046 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:47:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:13,046 INFO L85 PathProgramCache]: Analyzing trace with hash 829738032, now seen corresponding path program 1 times [2022-11-20 10:47:13,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:13,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816587797] [2022-11-20 10:47:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:13,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:13,517 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:47:13,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:13,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816587797] [2022-11-20 10:47:13,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816587797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:13,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838956477] [2022-11-20 10:47:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:13,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:13,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:13,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:13,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:47:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:13,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 10:47:13,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:13,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:47:13,866 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:47:13,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:47:13,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:47:13,950 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 10:47:13,950 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-20 10:47:14,068 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 24 treesize of output 12 [2022-11-20 10:47:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:47:14,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:14,204 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1344 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1344) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4)) 0))) is different from false [2022-11-20 10:47:14,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:14,222 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-11-20 10:47:14,226 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 39 treesize of output 27 [2022-11-20 10:47:14,232 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 8 treesize of output 4 [2022-11-20 10:47:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-20 10:47:14,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838956477] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:14,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:47:14,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-11-20 10:47:14,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368502762] [2022-11-20 10:47:14,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:14,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 10:47:14,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:14,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 10:47:14,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=634, Unknown=1, NotChecked=50, Total=756 [2022-11-20 10:47:14,401 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:15,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:15,975 INFO L93 Difference]: Finished difference Result 115 states and 146 transitions. [2022-11-20 10:47:15,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:47:15,976 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 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 38 [2022-11-20 10:47:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:15,977 INFO L225 Difference]: With dead ends: 115 [2022-11-20 10:47:15,977 INFO L226 Difference]: Without dead ends: 108 [2022-11-20 10:47:15,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=348, Invalid=1547, Unknown=1, NotChecked=84, Total=1980 [2022-11-20 10:47:15,979 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 597 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:15,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 306 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 422 Invalid, 0 Unknown, 90 Unchecked, 0.8s Time] [2022-11-20 10:47:15,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-20 10:47:15,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 57. [2022-11-20 10:47:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:16,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2022-11-20 10:47:16,000 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 38 [2022-11-20 10:47:16,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:16,001 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2022-11-20 10:47:16,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:16,001 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2022-11-20 10:47:16,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 10:47:16,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:16,002 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:16,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 10:47:16,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:16,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:47:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:16,209 INFO L85 PathProgramCache]: Analyzing trace with hash 244779060, now seen corresponding path program 1 times [2022-11-20 10:47:16,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:16,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157200716] [2022-11-20 10:47:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:16,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:47:16,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:16,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157200716] [2022-11-20 10:47:16,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157200716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:16,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407241688] [2022-11-20 10:47:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:16,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:16,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:16,337 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:16,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:47:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:16,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:47:16,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:47:16,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 10:47:16,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407241688] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:16,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:47:16,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-11-20 10:47:16,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390880162] [2022-11-20 10:47:16,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:16,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:47:16,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:16,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:47:16,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:47:16,653 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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) [2022-11-20 10:47:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:16,717 INFO L93 Difference]: Finished difference Result 95 states and 118 transitions. [2022-11-20 10:47:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:47:16,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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 38 [2022-11-20 10:47:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:16,718 INFO L225 Difference]: With dead ends: 95 [2022-11-20 10:47:16,719 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 10:47:16,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:47:16,720 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 47 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:16,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 29 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:47:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 10:47:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-20 10:47:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-11-20 10:47:16,732 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 38 [2022-11-20 10:47:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:16,732 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-11-20 10:47:16,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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) [2022-11-20 10:47:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-11-20 10:47:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 10:47:16,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:16,733 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:16,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:16,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 10:47:16,940 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:47:16,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:16,941 INFO L85 PathProgramCache]: Analyzing trace with hash 731872996, now seen corresponding path program 1 times [2022-11-20 10:47:16,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:16,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029646653] [2022-11-20 10:47:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:16,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:47:18,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:18,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029646653] [2022-11-20 10:47:18,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029646653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:18,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899263693] [2022-11-20 10:47:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:18,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:18,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:18,431 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:18,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:47:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:18,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-20 10:47:18,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:18,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:47:18,811 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 10:47:18,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 10:47:18,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:18,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:18,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:18,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:18,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 44 [2022-11-20 10:47:18,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:47:19,066 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 10:47:19,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 10:47:19,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:47:19,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:47:19,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:47:19,190 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 10:47:19,191 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 74 [2022-11-20 10:47:19,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:19,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2022-11-20 10:47:19,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 10:47:19,440 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 27 treesize of output 15 [2022-11-20 10:47:19,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 10:47:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 41 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:47:19,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:19,632 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1989 (Array Int Int)) (v_ArrVal_1990 Int) (v_ArrVal_1991 (Array Int Int))) (= (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_ArrVal_1990)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1991) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1989) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0))) 0)) is different from false [2022-11-20 10:47:19,655 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:19,655 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 77 [2022-11-20 10:47:19,660 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 124 treesize of output 112 [2022-11-20 10:47:19,669 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 55 treesize of output 51 [2022-11-20 10:47:19,680 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:19,681 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 86 [2022-11-20 10:47:19,687 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 136 treesize of output 118 [2022-11-20 10:47:19,695 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 109 treesize of output 101 [2022-11-20 10:47:30,131 WARN L233 SmtUtils]: Spent 10.12s on a formula simplification. DAG size of input: 48 DAG size of output: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:47:30,425 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1978 (Array Int Int)) (v_ArrVal_1985 (Array Int Int)) (v_ArrVal_1990 Int) (|v_ULTIMATE.start_dll_create_~new_head~0#1.base_23| Int) (v_arrayElimCell_32 Int) (v_arrayElimCell_34 Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_1978) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_23| v_ArrVal_1985))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))) (let ((.cse2 (store .cse0 (+ 12 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) v_ArrVal_1990))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_23|) 0)) (= (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|) 0) (= (select (select (store .cse1 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| .cse2) v_arrayElimCell_32) v_arrayElimCell_34) 0) (= (select .cse2 v_arrayElimCell_34) 0)))))) is different from false [2022-11-20 10:47:30,465 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:30,465 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 173 treesize of output 109 [2022-11-20 10:47:30,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:30,490 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 1856 treesize of output 1802 [2022-11-20 10:47:30,553 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:30,554 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 2004 treesize of output 1924 [2022-11-20 10:47:30,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:30,613 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 2052 treesize of output 2000 [2022-11-20 10:47:31,089 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 1565 treesize of output 1545 [2022-11-20 10:47:32,265 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:32,266 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 64 treesize of output 68 [2022-11-20 10:47:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 39 proven. 11 refuted. 1 times theorem prover too weak. 7 trivial. 3 not checked. [2022-11-20 10:47:32,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899263693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:32,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:47:32,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 41 [2022-11-20 10:47:32,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627527283] [2022-11-20 10:47:32,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:32,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 10:47:32,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:32,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 10:47:32,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1324, Unknown=4, NotChecked=150, Total=1640 [2022-11-20 10:47:32,608 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:47:38,968 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2022-11-20 10:47:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:47:38,971 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 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 43 [2022-11-20 10:47:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:47:38,972 INFO L225 Difference]: With dead ends: 75 [2022-11-20 10:47:38,972 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 10:47:38,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=376, Invalid=2280, Unknown=4, NotChecked=202, Total=2862 [2022-11-20 10:47:38,974 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 78 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:47:38,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 258 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 434 Invalid, 0 Unknown, 253 Unchecked, 1.3s Time] [2022-11-20 10:47:38,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 10:47:38,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2022-11-20 10:47:38,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:38,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2022-11-20 10:47:38,990 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 43 [2022-11-20 10:47:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:47:38,991 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2022-11-20 10:47:38,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:38,991 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2022-11-20 10:47:38,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 10:47:38,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:47:38,992 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:47:38,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:47:39,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:47:39,195 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:47:39,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:47:39,196 INFO L85 PathProgramCache]: Analyzing trace with hash 733720038, now seen corresponding path program 1 times [2022-11-20 10:47:39,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:47:39,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173681642] [2022-11-20 10:47:39,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:39,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:47:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:47:41,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:47:41,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173681642] [2022-11-20 10:47:41,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173681642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:47:41,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910101496] [2022-11-20 10:47:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:47:41,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:47:41,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:41,114 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:47:41,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:47:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:47:41,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-20 10:47:41,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:47:41,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:47:41,494 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 10:47:41,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 10:47:41,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:41,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:41,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:41,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:41,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 44 [2022-11-20 10:47:41,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 10:47:41,771 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 10:47:41,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 10:47:41,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:47:41,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:47:41,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:47:41,889 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 10:47:41,889 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 74 [2022-11-20 10:47:41,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:47:41,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2022-11-20 10:47:41,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 10:47:42,173 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 15 treesize of output 7 [2022-11-20 10:47:42,182 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 27 treesize of output 15 [2022-11-20 10:47:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:47:42,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:47:42,449 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2329 (Array Int Int)) (v_ArrVal_2330 Int) (v_ArrVal_2331 (Array Int Int))) (= (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_ArrVal_2330)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_2331) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0)) (+ 8 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_2329) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0)))) 0)) is different from false [2022-11-20 10:47:42,466 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:42,466 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 79 [2022-11-20 10:47:42,472 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 128 treesize of output 116 [2022-11-20 10:47:42,479 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 57 treesize of output 53 [2022-11-20 10:47:42,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:42,493 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 90 [2022-11-20 10:47:42,497 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 144 treesize of output 126 [2022-11-20 10:47:42,502 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 117 treesize of output 109 [2022-11-20 10:47:42,634 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse15 (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (let ((.cse5 (not .cse15)) (.cse3 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 8)) (.cse1 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12))) (and (or (and (forall ((v_ArrVal_2327 (Array Int Int)) (v_ArrVal_2330 Int) (v_arrayElimCell_57 Int) (v_arrayElimCell_59 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2327))) (store .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse1 v_ArrVal_2330))) v_arrayElimCell_57) (+ 8 v_arrayElimCell_59)) 0)) (forall ((v_ArrVal_2327 (Array Int Int)) (v_ArrVal_2330 Int) (v_arrayElimCell_57 Int) (v_arrayElimCell_59 Int)) (let ((.cse2 (select (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2327))) (store .cse4 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse1 v_ArrVal_2330))) v_arrayElimCell_57))) (or (= (select .cse2 .cse3) 0) (= (select .cse2 (+ 8 v_arrayElimCell_59)) 0))))) .cse5) (forall ((v_ArrVal_2327 (Array Int Int)) (v_ArrVal_2330 Int) (v_arrayElimCell_57 Int) (v_arrayElimCell_59 Int)) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2327))) (let ((.cse9 (select .cse10 |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (let ((.cse6 (store .cse9 .cse1 v_ArrVal_2330))) (let ((.cse8 (select (store .cse10 |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse6) v_arrayElimCell_57)) (.cse7 (+ 8 v_arrayElimCell_59))) (or (= (select .cse6 .cse7) 0) (= (select .cse8 .cse3) 0) (= (select .cse8 .cse7) 0) (= (select .cse9 .cse3) 0))))))) (or .cse5 (forall ((v_ArrVal_2327 (Array Int Int)) (v_ArrVal_2330 Int) (v_arrayElimCell_57 Int) (v_arrayElimCell_59 Int)) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2327))) (let ((.cse11 (store (select .cse14 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse1 v_ArrVal_2330))) (let ((.cse13 (select (store .cse14 |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse11) v_arrayElimCell_57)) (.cse12 (+ 8 v_arrayElimCell_59))) (or (= (select .cse11 .cse12) 0) (= (select .cse13 .cse3) 0) (= (select .cse13 .cse12) 0))))))) (or .cse15 (forall ((v_ArrVal_2327 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2327) |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse3) 0))) (or (forall ((v_ArrVal_2327 (Array Int Int)) (v_ArrVal_2330 Int) (v_arrayElimCell_57 Int) (v_arrayElimCell_59 Int)) (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2327))) (let ((.cse16 (store (select .cse18 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse1 v_ArrVal_2330)) (.cse17 (+ 8 v_arrayElimCell_59))) (or (= (select .cse16 .cse17) 0) (= (select (select (store .cse18 |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse16) v_arrayElimCell_57) .cse17) 0))))) .cse5) (forall ((v_ArrVal_2327 (Array Int Int)) (v_ArrVal_2330 Int) (v_arrayElimCell_57 Int) (v_arrayElimCell_59 Int)) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2327))) (let ((.cse22 (select .cse21 |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (let ((.cse19 (store .cse22 .cse1 v_ArrVal_2330)) (.cse20 (+ 8 v_arrayElimCell_59))) (or (= (select .cse19 .cse20) 0) (= (select (select (store .cse21 |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse19) v_arrayElimCell_57) .cse20) 0) (= (select .cse22 .cse3) 0))))))))) is different from false [2022-11-20 10:47:42,811 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:42,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 10:47:42,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:42,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 33 [2022-11-20 10:47:42,854 INFO L321 Elim1Store]: treesize reduction 14, result has 63.2 percent of original size [2022-11-20 10:47:42,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 67 [2022-11-20 10:47:42,975 INFO L321 Elim1Store]: treesize reduction 14, result has 63.2 percent of original size [2022-11-20 10:47:42,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 55 [2022-11-20 10:47:43,684 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:43,684 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 179 treesize of output 115 [2022-11-20 10:47:43,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:47:43,701 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:43,702 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 708 treesize of output 686 [2022-11-20 10:47:43,730 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:43,731 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 428 treesize of output 388 [2022-11-20 10:47:43,743 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 358 treesize of output 342 [2022-11-20 10:47:43,772 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 8 treesize of output 4 [2022-11-20 10:47:43,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:47:43,793 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 354 treesize of output 350 [2022-11-20 10:47:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 39 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 6 not checked. [2022-11-20 10:47:44,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910101496] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:47:44,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:47:44,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 41 [2022-11-20 10:47:44,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753673595] [2022-11-20 10:47:44,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:47:44,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 10:47:44,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:47:44,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 10:47:44,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1324, Unknown=5, NotChecked=150, Total=1640 [2022-11-20 10:47:44,124 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:47:51,118 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 59 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:47:57,427 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 66 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:48:00,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:00,124 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2022-11-20 10:48:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:48:00,124 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 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 43 [2022-11-20 10:48:00,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:00,125 INFO L225 Difference]: With dead ends: 75 [2022-11-20 10:48:00,125 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 10:48:00,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=323, Invalid=2229, Unknown=6, NotChecked=198, Total=2756 [2022-11-20 10:48:00,127 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 74 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:00,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 241 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 440 Invalid, 0 Unknown, 255 Unchecked, 0.9s Time] [2022-11-20 10:48:00,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 10:48:00,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2022-11-20 10:48:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2022-11-20 10:48:00,138 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 43 [2022-11-20 10:48:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:00,139 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2022-11-20 10:48:00,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 41 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2022-11-20 10:48:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 10:48:00,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:00,140 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:00,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:00,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:00,347 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:00,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:00,347 INFO L85 PathProgramCache]: Analyzing trace with hash 733721960, now seen corresponding path program 1 times [2022-11-20 10:48:00,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:00,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996605023] [2022-11-20 10:48:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:00,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 34 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:48:01,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:01,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996605023] [2022-11-20 10:48:01,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996605023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:01,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512603758] [2022-11-20 10:48:01,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:01,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:01,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:01,914 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:01,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:48:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:02,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-20 10:48:02,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:02,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:48:02,275 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 10:48:02,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 10:48:02,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:02,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:02,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:02,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:02,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 44 [2022-11-20 10:48:02,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 10:48:02,525 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-20 10:48:02,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 10:48:02,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:48:02,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:48:02,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:48:02,672 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 10:48:02,672 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 74 [2022-11-20 10:48:02,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:02,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2022-11-20 10:48:02,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 10:48:02,956 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 15 treesize of output 7 [2022-11-20 10:48:02,960 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 27 treesize of output 15 [2022-11-20 10:48:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:48:03,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:03,230 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2669 (Array Int Int)) (v_ArrVal_2672 Int) (v_ArrVal_2671 (Array Int Int))) (= (let ((.cse0 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_ArrVal_2672)) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_2669) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0)) (+ 16 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_2671) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse0)))) 0)) is different from false [2022-11-20 10:48:03,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:03,258 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 79 [2022-11-20 10:48:03,264 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 128 treesize of output 116 [2022-11-20 10:48:03,275 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 57 treesize of output 53 [2022-11-20 10:48:03,288 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:03,288 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 90 [2022-11-20 10:48:03,294 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 144 treesize of output 126 [2022-11-20 10:48:03,299 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 117 treesize of output 109 [2022-11-20 10:48:03,432 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse22 (= |c_ULTIMATE.start_dll_create_~new_head~0#1.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (let ((.cse6 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12)) (.cse11 (not .cse22)) (.cse3 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 16))) (and (forall ((v_arrayElimCell_83 Int) (v_arrayElimCell_85 Int) (v_ArrVal_2668 (Array Int Int)) (v_ArrVal_2672 Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2668))) (let ((.cse4 (select .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (let ((.cse0 (store .cse4 .cse6 v_ArrVal_2672))) (let ((.cse1 (+ 16 v_arrayElimCell_85)) (.cse2 (select (store .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse0) v_arrayElimCell_83))) (or (= (select .cse0 .cse1) 0) (= (select .cse2 .cse1) 0) (= (select .cse2 .cse3) 0) (= (select .cse4 .cse3) 0))))))) (forall ((v_arrayElimCell_83 Int) (v_arrayElimCell_85 Int) (v_ArrVal_2668 (Array Int Int)) (v_ArrVal_2672 Int)) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2668))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base|))) (let ((.cse7 (store .cse10 .cse6 v_ArrVal_2672)) (.cse8 (+ 16 v_arrayElimCell_85))) (or (= (select .cse7 .cse8) 0) (= (select (select (store .cse9 |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse7) v_arrayElimCell_83) .cse8) 0) (= (select .cse10 .cse3) 0)))))) (or .cse11 (forall ((v_arrayElimCell_83 Int) (v_arrayElimCell_85 Int) (v_ArrVal_2668 (Array Int Int)) (v_ArrVal_2672 Int)) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2668))) (let ((.cse12 (store (select .cse15 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 v_ArrVal_2672))) (let ((.cse13 (+ 16 v_arrayElimCell_85)) (.cse14 (select (store .cse15 |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse12) v_arrayElimCell_83))) (or (= (select .cse12 .cse13) 0) (= (select .cse14 .cse13) 0) (= (select .cse14 .cse3) 0))))))) (or (and (forall ((v_arrayElimCell_83 Int) (v_arrayElimCell_85 Int) (v_ArrVal_2668 (Array Int Int)) (v_ArrVal_2672 Int)) (= (select (select (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2668))) (store .cse16 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse16 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 v_ArrVal_2672))) v_arrayElimCell_83) (+ 16 v_arrayElimCell_85)) 0)) (forall ((v_arrayElimCell_83 Int) (v_arrayElimCell_85 Int) (v_ArrVal_2668 (Array Int Int)) (v_ArrVal_2672 Int)) (let ((.cse17 (select (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2668))) (store .cse18 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse18 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 v_ArrVal_2672))) v_arrayElimCell_83))) (or (= (select .cse17 (+ 16 v_arrayElimCell_85)) 0) (= (select .cse17 .cse3) 0))))) .cse11) (or (forall ((v_arrayElimCell_83 Int) (v_arrayElimCell_85 Int) (v_ArrVal_2668 (Array Int Int)) (v_ArrVal_2672 Int)) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2668))) (let ((.cse19 (store (select .cse21 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 v_ArrVal_2672)) (.cse20 (+ 16 v_arrayElimCell_85))) (or (= (select .cse19 .cse20) 0) (= (select (select (store .cse21 |c_ULTIMATE.start_dll_create_~head~0#1.base| .cse19) v_arrayElimCell_83) .cse20) 0))))) .cse11) (or .cse22 (forall ((v_ArrVal_2668 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_2668) |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse3) 0)))))) is different from false [2022-11-20 10:48:03,578 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:03,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 33 [2022-11-20 10:48:03,591 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:03,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 10:48:03,625 INFO L321 Elim1Store]: treesize reduction 14, result has 63.2 percent of original size [2022-11-20 10:48:03,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 55 [2022-11-20 10:48:03,715 INFO L321 Elim1Store]: treesize reduction 14, result has 63.2 percent of original size [2022-11-20 10:48:03,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 67 [2022-11-20 10:48:04,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:04,430 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 1 new quantified variables, introduced 5 case distinctions, treesize of input 179 treesize of output 115 [2022-11-20 10:48:04,436 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:48:04,448 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:04,449 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 708 treesize of output 686 [2022-11-20 10:48:04,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:04,480 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 428 treesize of output 388 [2022-11-20 10:48:04,492 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 358 treesize of output 342 [2022-11-20 10:48:04,513 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 8 treesize of output 4 [2022-11-20 10:48:04,546 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:04,547 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 188 treesize of output 184 [2022-11-20 10:48:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 6 not checked. [2022-11-20 10:48:04,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512603758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:04,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:48:04,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 40 [2022-11-20 10:48:04,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978269842] [2022-11-20 10:48:04,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:04,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-20 10:48:04,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:04,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-20 10:48:04,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1249, Unknown=6, NotChecked=146, Total=1560 [2022-11-20 10:48:04,894 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:13,838 WARN L233 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 59 DAG size of output: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:48:22,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:22,898 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2022-11-20 10:48:22,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 10:48:22,899 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 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 43 [2022-11-20 10:48:22,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:22,900 INFO L225 Difference]: With dead ends: 64 [2022-11-20 10:48:22,900 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 10:48:22,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=325, Invalid=2127, Unknown=6, NotChecked=194, Total=2652 [2022-11-20 10:48:22,901 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 104 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 240 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:22,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 242 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 318 Invalid, 0 Unknown, 240 Unchecked, 0.8s Time] [2022-11-20 10:48:22,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 10:48:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2022-11-20 10:48:22,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-11-20 10:48:22,912 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 43 [2022-11-20 10:48:22,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:22,913 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-11-20 10:48:22,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:22,913 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-11-20 10:48:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 10:48:22,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:22,914 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:22,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:23,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:23,120 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:23,120 INFO L85 PathProgramCache]: Analyzing trace with hash 206461501, now seen corresponding path program 1 times [2022-11-20 10:48:23,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:23,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080259856] [2022-11-20 10:48:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:23,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:48:24,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:24,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080259856] [2022-11-20 10:48:24,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080259856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:24,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426210280] [2022-11-20 10:48:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:24,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:24,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:24,583 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:24,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:48:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:24,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-20 10:48:24,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:24,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:48:25,091 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 10:48:25,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 10:48:25,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:48:25,285 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 10:48:25,286 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2022-11-20 10:48:25,450 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-11-20 10:48:25,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-11-20 10:48:25,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:48:25,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 21 [2022-11-20 10:48:25,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2022-11-20 10:48:25,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:25,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:48:25,662 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 10:48:25,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 45 [2022-11-20 10:48:25,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:25,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 10:48:26,042 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 15 treesize of output 7 [2022-11-20 10:48:26,128 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:48:26,129 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 23 [2022-11-20 10:48:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 33 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:48:26,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:26,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:26,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 89 [2022-11-20 10:48:26,570 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:26,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 78 [2022-11-20 10:48:26,576 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 127 treesize of output 115 [2022-11-20 10:48:26,581 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 110 treesize of output 106 [2022-11-20 10:48:27,186 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2022-11-20 10:48:27,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 66 [2022-11-20 10:48:27,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:27,223 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 15 treesize of output 17 [2022-11-20 10:48:31,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:31,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 41 [2022-11-20 10:48:31,821 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:31,821 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 103 treesize of output 102 [2022-11-20 10:48:31,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:31,833 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 98 treesize of output 72 [2022-11-20 10:48:31,839 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 50 treesize of output 46 [2022-11-20 10:48:31,911 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:31,911 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 118 treesize of output 79 [2022-11-20 10:48:31,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:48:31,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:31,927 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 1809 treesize of output 1679 [2022-11-20 10:48:31,949 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 1670 treesize of output 1502 [2022-11-20 10:48:31,972 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:31,972 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 1509 treesize of output 1123 [2022-11-20 10:48:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 33 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:48:32,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426210280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:48:32,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:48:32,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 16] total 46 [2022-11-20 10:48:32,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980770756] [2022-11-20 10:48:32,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:48:32,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 10:48:32,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:32,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 10:48:32,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1912, Unknown=13, NotChecked=0, Total=2070 [2022-11-20 10:48:32,392 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 46 states, 46 states have (on average 2.130434782608696) internal successors, (98), 46 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:36,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:36,255 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2022-11-20 10:48:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:48:36,255 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.130434782608696) internal successors, (98), 46 states have internal predecessors, (98), 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 44 [2022-11-20 10:48:36,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:36,256 INFO L225 Difference]: With dead ends: 62 [2022-11-20 10:48:36,256 INFO L226 Difference]: Without dead ends: 55 [2022-11-20 10:48:36,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=534, Invalid=3359, Unknown=13, NotChecked=0, Total=3906 [2022-11-20 10:48:36,258 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 167 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:36,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 456 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 623 Invalid, 0 Unknown, 195 Unchecked, 1.5s Time] [2022-11-20 10:48:36,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-20 10:48:36,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-20 10:48:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 54 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:36,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-11-20 10:48:36,270 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 44 [2022-11-20 10:48:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:36,270 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-11-20 10:48:36,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.130434782608696) internal successors, (98), 46 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:48:36,271 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-11-20 10:48:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 10:48:36,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:36,272 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:36,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:48:36,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:36,478 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:36,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:36,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1765953289, now seen corresponding path program 2 times [2022-11-20 10:48:36,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:36,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582017809] [2022-11-20 10:48:36,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:36,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 38 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:48:39,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:39,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582017809] [2022-11-20 10:48:39,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582017809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:48:39,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649089637] [2022-11-20 10:48:39,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:48:39,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:48:39,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:39,562 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:48:39,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_527ec0e3-433a-4232-84b9-ef5e95973f2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:48:39,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:48:39,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:48:39,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-20 10:48:39,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:48:39,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:48:39,973 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 10:48:39,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 10:48:40,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:40,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:40,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:40,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:40,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 44 [2022-11-20 10:48:40,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:48:40,312 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-20 10:48:40,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-20 10:48:40,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:48:40,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-11-20 10:48:40,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:48:40,641 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 10:48:40,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 83 [2022-11-20 10:48:40,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2022-11-20 10:48:40,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 10:48:40,941 INFO L321 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2022-11-20 10:48:40,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 29 [2022-11-20 10:48:41,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 21 [2022-11-20 10:48:41,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:48:41,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 21 [2022-11-20 10:48:41,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 10:48:41,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-20 10:48:41,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:41,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:48:41,235 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 10:48:41,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 66 [2022-11-20 10:48:41,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:41,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-11-20 10:48:41,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 10:48:41,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:48:41,992 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-20 10:48:41,993 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 49 [2022-11-20 10:48:42,007 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 10:48:42,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-11-20 10:48:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:48:42,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:48:42,433 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3369 Int) (v_ArrVal_3367 (Array Int Int)) (v_ArrVal_3366 Int)) (= (let ((.cse5 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse5 v_ArrVal_3369))) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse5 v_ArrVal_3366))) (.cse4 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse4)) (.cse2 (+ (select (select .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse4) 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3367) (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2))))) 0)) is different from false [2022-11-20 10:48:42,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:42,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 265 treesize of output 222 [2022-11-20 10:48:42,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:42,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 205 treesize of output 162 [2022-11-20 10:48:42,500 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3361 (Array Int Int)) (v_ArrVal_3369 Int) (v_ArrVal_3367 (Array Int Int)) (v_ArrVal_3366 Int) (v_arrayElimArr_29 (Array Int Int)) (v_arrayElimArr_30 (Array Int Int))) (let ((.cse4 (+ |c_ULTIMATE.start_dll_create_~new_head~0#1.offset| 4))) (or (= (let ((.cse6 (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12))) (let ((.cse3 (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_30))) (store .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 v_ArrVal_3369)))) (.cse0 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_arrayElimArr_29))) (store .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_create_~head~0#1.base|) .cse6 v_ArrVal_3366))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse4)) (.cse2 (+ (select (select .cse3 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse4) 4))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_3361) |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3367) (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2))))) 0) (not (= (select v_arrayElimArr_29 .cse4) |c_ULTIMATE.start_dll_create_~head~0#1.base|)) (not (= |c_ULTIMATE.start_dll_create_~head~0#1.offset| (select v_arrayElimArr_30 .cse4)))))) is different from false [2022-11-20 10:48:43,148 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3350 (Array Int Int)) (v_ArrVal_3361 (Array Int Int)) (v_ArrVal_3369 Int) (v_ArrVal_3347 Int) (v_ArrVal_3367 (Array Int Int)) (v_ArrVal_3366 Int) (v_arrayElimArr_29 (Array Int Int)) (|v_ULTIMATE.start_dll_create_~new_head~0#1.base_35| Int) (v_ArrVal_3348 (Array Int Int)) (v_arrayElimArr_30 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_30 4))) (or (not (= .cse0 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) (= (let ((.cse6 (+ .cse0 12))) (let ((.cse4 (let ((.cse7 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3348) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_35| v_arrayElimArr_30))) (store .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse6 v_ArrVal_3369)))) (.cse1 (let ((.cse5 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_3350) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_35| v_arrayElimArr_29))) (store .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) .cse6 v_ArrVal_3366))))) (let ((.cse2 (select (select .cse1 |v_ULTIMATE.start_dll_create_~new_head~0#1.base_35|) 4)) (.cse3 (+ (select (select .cse4 |v_ULTIMATE.start_dll_create_~new_head~0#1.base_35|) 4) 4))) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_create_~head~0#1.base|) (+ |c_ULTIMATE.start_dll_create_~head~0#1.offset| 12) v_ArrVal_3347)) |v_ULTIMATE.start_dll_create_~new_head~0#1.base_35| v_ArrVal_3361) |c_ULTIMATE.start_dll_create_~new_head~0#1.base| v_ArrVal_3367) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3))))) 0) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_create_~new_head~0#1.base_35|) 0)) (not (= (select v_arrayElimArr_29 4) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|))))) is different from false [2022-11-20 10:48:43,186 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:43,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 381 treesize of output 312 [2022-11-20 10:48:43,209 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:43,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 291 treesize of output 222 [2022-11-20 10:48:43,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:43,380 INFO L321 Elim1Store]: treesize reduction 34, result has 67.0 percent of original size [2022-11-20 10:48:43,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32076 treesize of output 31663 [2022-11-20 10:48:43,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:48:44,159 INFO L321 Elim1Store]: treesize reduction 43, result has 66.9 percent of original size [2022-11-20 10:48:44,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 6643184 treesize of output 6469060 [2022-11-20 10:48:50,671 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification that was a NOOP. DAG size: 3923 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:48:51,892 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:48:51,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 8506936 treesize of output 7303412 [2022-11-20 10:49:01,358 WARN L233 SmtUtils]: Spent 9.46s on a formula simplification that was a NOOP. DAG size: 4111 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:49:10,565 WARN L233 SmtUtils]: Spent 9.18s on a formula simplification that was a NOOP. DAG size: 4096 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:49:11,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:49:11,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 8540436 treesize of output 8130930 [2022-11-20 10:49:25,173 WARN L233 SmtUtils]: Spent 13.41s on a formula simplification that was a NOOP. DAG size: 4185 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:53:48,463 WARN L233 SmtUtils]: Spent 4.39m on a formula simplification. DAG size of input: 4174 DAG size of output: 4172 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:53:49,684 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:53:49,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 8977210 treesize of output 8766930 [2022-11-20 10:54:19,475 WARN L233 SmtUtils]: Spent 29.78s on a formula simplification. DAG size of input: 4374 DAG size of output: 4373 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:54:34,324 WARN L233 SmtUtils]: Spent 14.82s on a formula simplification that was a NOOP. DAG size: 4369 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:54:36,015 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:54:36,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 10119334 treesize of output 9790330 [2022-11-20 10:55:14,871 WARN L233 SmtUtils]: Spent 38.84s on a formula simplification. DAG size of input: 4416 DAG size of output: 4411 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:57:16,064 WARN L233 SmtUtils]: Spent 1.68m on a formula simplification. DAG size of input: 4229 DAG size of output: 4229 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:58:26,898 WARN L233 SmtUtils]: Spent 52.05s on a formula simplification. DAG size of input: 4227 DAG size of output: 4227 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:58:49,289 WARN L233 SmtUtils]: Spent 14.42s on a formula simplification. DAG size of input: 1120 DAG size of output: 1120 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:59:04,238 WARN L233 SmtUtils]: Spent 10.59s on a formula simplification. DAG size of input: 1116 DAG size of output: 1116 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:59:23,644 WARN L233 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 813 DAG size of output: 813 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:59:32,082 WARN L233 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 813 DAG size of output: 813 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:59:38,270 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 813 DAG size of output: 813 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:59:48,206 WARN L233 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 813 DAG size of output: 813 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 10:59:59,051 WARN L233 SmtUtils]: Spent 9.76s on a formula simplification. DAG size of input: 813 DAG size of output: 813 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:00:08,742 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 813 DAG size of output: 813 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:00:19,625 WARN L233 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 813 DAG size of output: 813 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:00:31,937 WARN L233 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 813 DAG size of output: 813 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:00:40,537 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 809 DAG size of output: 809 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:00:48,177 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 809 DAG size of output: 809 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:00:58,749 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 809 DAG size of output: 809 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:01:10,075 WARN L233 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 811 DAG size of output: 812 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:01:23,971 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification. DAG size of input: 809 DAG size of output: 809 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:01:30,163 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 809 DAG size of output: 809 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:01:36,766 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 809 DAG size of output: 809 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:01:52,475 WARN L233 SmtUtils]: Spent 8.77s on a formula simplification. DAG size of input: 809 DAG size of output: 809 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:02:05,795 WARN L233 SmtUtils]: Spent 8.72s on a formula simplification. DAG size of input: 809 DAG size of output: 809 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)