./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_append_unequal.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_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/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_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/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_64c6d406-ce5e-4a34-b4c4-c382516595c6/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 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 --- 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 11:16:56,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:16:56,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:16:56,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:16:56,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:16:56,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:16:56,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:16:56,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:16:56,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:16:56,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:16:56,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:16:56,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:16:56,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:16:56,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:16:56,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:16:56,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:16:56,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:16:56,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:16:56,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:16:56,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:16:56,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:16:56,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:16:56,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:16:56,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:16:56,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:16:56,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:16:56,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:16:56,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:16:56,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:16:56,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:16:56,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:16:56,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:16:56,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:16:56,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:16:56,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:16:56,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:16:56,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:16:56,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:16:56,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:16:56,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:16:56,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:16:56,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:16:56,682 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:16:56,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:16:56,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:16:56,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:16:56,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:16:56,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:16:56,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:16:56,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:16:56,686 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:16:56,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:16:56,687 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:16:56,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:16:56,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:16:56,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:16:56,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:16:56,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:16:56,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:16:56,689 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:16:56,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:16:56,690 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:16:56,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:16:56,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:16:56,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:16:56,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:16:56,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:16:56,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:16:56,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:16:56,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:16:56,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:16:56,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:16:56,693 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:16:56,693 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:16:56,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:16:56,693 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_64c6d406-ce5e-4a34-b4c4-c382516595c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 [2022-11-20 11:16:57,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:16:57,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:16:57,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:16:57,065 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:16:57,066 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:16:57,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2022-11-20 11:17:00,061 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:17:00,349 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:17:00,350 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2022-11-20 11:17:00,372 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/data/eb54dc9a0/35340266b95d4148bd1898367f24daed/FLAG9569d5860 [2022-11-20 11:17:00,388 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/data/eb54dc9a0/35340266b95d4148bd1898367f24daed [2022-11-20 11:17:00,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:17:00,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:17:00,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:17:00,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:17:00,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:17:00,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:17:00" (1/1) ... [2022-11-20 11:17:00,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63fc9b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:00, skipping insertion in model container [2022-11-20 11:17:00,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:17:00" (1/1) ... [2022-11-20 11:17:00,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:17:00,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:17:00,933 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_64c6d406-ce5e-4a34-b4c4-c382516595c6/sv-benchmarks/c/list-simple/dll2n_append_unequal.i[24457,24470] [2022-11-20 11:17:00,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:17:00,956 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:17:01,018 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_64c6d406-ce5e-4a34-b4c4-c382516595c6/sv-benchmarks/c/list-simple/dll2n_append_unequal.i[24457,24470] [2022-11-20 11:17:01,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:17:01,050 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:17:01,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01 WrapperNode [2022-11-20 11:17:01,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:17:01,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:17:01,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:17:01,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:17:01,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (1/1) ... [2022-11-20 11:17:01,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (1/1) ... [2022-11-20 11:17:01,130 INFO L138 Inliner]: procedures = 127, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 138 [2022-11-20 11:17:01,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:17:01,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:17:01,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:17:01,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:17:01,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (1/1) ... [2022-11-20 11:17:01,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (1/1) ... [2022-11-20 11:17:01,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (1/1) ... [2022-11-20 11:17:01,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (1/1) ... [2022-11-20 11:17:01,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (1/1) ... [2022-11-20 11:17:01,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (1/1) ... [2022-11-20 11:17:01,176 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (1/1) ... [2022-11-20 11:17:01,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (1/1) ... [2022-11-20 11:17:01,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:17:01,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:17:01,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:17:01,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:17:01,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (1/1) ... [2022-11-20 11:17:01,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:17:01,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:01,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:17:01,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:17:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:17:01,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:17:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-11-20 11:17:01,276 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-11-20 11:17:01,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:17:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:17:01,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:17:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:17:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:17:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:17:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:17:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:17:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:17:01,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:17:01,433 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:17:01,435 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:17:01,727 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:17:01,733 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:17:01,733 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:17:01,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:17:01 BoogieIcfgContainer [2022-11-20 11:17:01,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:17:01,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:17:01,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:17:01,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:17:01,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:17:00" (1/3) ... [2022-11-20 11:17:01,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f671ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:17:01, skipping insertion in model container [2022-11-20 11:17:01,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:17:01" (2/3) ... [2022-11-20 11:17:01,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f671ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:17:01, skipping insertion in model container [2022-11-20 11:17:01,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:17:01" (3/3) ... [2022-11-20 11:17:01,756 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal.i [2022-11-20 11:17:01,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:17:01,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:17:01,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:17:01,860 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;@72d7036d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:17:01,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:17:01,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 32 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:17:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:17:01,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:01,875 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 11:17:01,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash -346371136, now seen corresponding path program 1 times [2022-11-20 11:17:01,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:01,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629874160] [2022-11-20 11:17:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:01,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:17:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:02,199 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 11:17:02,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:02,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629874160] [2022-11-20 11:17:02,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629874160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:02,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:02,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:17:02,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982652826] [2022-11-20 11:17:02,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:02,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:17:02,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:17:02,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:17:02,271 INFO L87 Difference]: Start difference. First operand has 36 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 32 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:17:02,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:02,358 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2022-11-20 11:17:02,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:17:02,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-20 11:17:02,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:02,367 INFO L225 Difference]: With dead ends: 65 [2022-11-20 11:17:02,368 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 11:17:02,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 11:17:02,374 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:02,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:17:02,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 11:17:02,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 11:17:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:17:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-11-20 11:17:02,413 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17 [2022-11-20 11:17:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:02,413 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-11-20 11:17:02,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:17:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-11-20 11:17:02,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:17:02,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:02,415 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 11:17:02,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:17:02,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:02,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:02,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1530291827, now seen corresponding path program 1 times [2022-11-20 11:17:02,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:02,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729725032] [2022-11-20 11:17:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:02,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:02,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:17:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:02,682 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 11:17:02,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:02,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729725032] [2022-11-20 11:17:02,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729725032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:02,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:02,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:17:02,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301624049] [2022-11-20 11:17:02,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:02,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:17:02,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:02,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:17:02,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:17:02,686 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:17:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:02,757 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2022-11-20 11:17:02,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:17:02,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-20 11:17:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:02,759 INFO L225 Difference]: With dead ends: 58 [2022-11-20 11:17:02,759 INFO L226 Difference]: Without dead ends: 35 [2022-11-20 11:17:02,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:17:02,761 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:02,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 86 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:17:02,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-20 11:17:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2022-11-20 11:17:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:17:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-11-20 11:17:02,770 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 17 [2022-11-20 11:17:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:02,770 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-11-20 11:17:02,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:17:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-11-20 11:17:02,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 11:17:02,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:02,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:02,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:17:02,775 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:02,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash 878865159, now seen corresponding path program 1 times [2022-11-20 11:17:02,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:02,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469151] [2022-11-20 11:17:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:02,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:17:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:03,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:17:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:17:03,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:03,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469151] [2022-11-20 11:17:03,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:03,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:03,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:17:03,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686654942] [2022-11-20 11:17:03,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:03,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:17:03,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:17:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:17:03,109 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:17:03,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:03,223 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2022-11-20 11:17:03,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:17:03,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-11-20 11:17:03,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:03,226 INFO L225 Difference]: With dead ends: 63 [2022-11-20 11:17:03,226 INFO L226 Difference]: Without dead ends: 35 [2022-11-20 11:17:03,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:17:03,227 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:03,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 85 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:17:03,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-20 11:17:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-11-20 11:17:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:17:03,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-11-20 11:17:03,234 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 27 [2022-11-20 11:17:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:03,235 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-11-20 11:17:03,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:17:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-11-20 11:17:03,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 11:17:03,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:03,236 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:03,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:17:03,237 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:03,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:03,237 INFO L85 PathProgramCache]: Analyzing trace with hash -709482743, now seen corresponding path program 1 times [2022-11-20 11:17:03,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:03,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380527698] [2022-11-20 11:17:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:03,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:17:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:03,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:17:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:17:03,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:03,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380527698] [2022-11-20 11:17:03,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380527698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:03,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630699751] [2022-11-20 11:17:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:03,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:03,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:03,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:17:03,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:17:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:03,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:17:03,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:17:03,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:17:03,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:17:03,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630699751] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:17:03,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:17:03,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 6 [2022-11-20 11:17:03,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623577861] [2022-11-20 11:17:03,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:17:03,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:17:03,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:03,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:17:03,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:17:03,841 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:17:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:03,933 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2022-11-20 11:17:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:17:03,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2022-11-20 11:17:03,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:03,936 INFO L225 Difference]: With dead ends: 59 [2022-11-20 11:17:03,936 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 11:17:03,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:17:03,947 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:03,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:17:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 11:17:03,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-20 11:17:03,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:17:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-20 11:17:03,953 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 27 [2022-11-20 11:17:03,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:03,954 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-20 11:17:03,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:17:03,954 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-20 11:17:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 11:17:03,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:03,955 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:03,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:17:04,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:04,166 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:04,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:04,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1607276515, now seen corresponding path program 1 times [2022-11-20 11:17:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:04,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509126769] [2022-11-20 11:17:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:04,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:04,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:17:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:04,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:17:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:04,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:17:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:17:05,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:05,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509126769] [2022-11-20 11:17:05,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509126769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:05,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838807634] [2022-11-20 11:17:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:05,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:05,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:05,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:17:05,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:17:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:05,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 11:17:05,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:05,666 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 17 treesize of output 9 [2022-11-20 11:17:05,744 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (exists ((v_ArrVal_520 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_520) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-20 11:17:05,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:05,817 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 24 treesize of output 24 [2022-11-20 11:17:05,863 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 25 treesize of output 13 [2022-11-20 11:17:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 2 not checked. [2022-11-20 11:17:05,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:17:06,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838807634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:06,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:17:06,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2022-11-20 11:17:06,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478831977] [2022-11-20 11:17:06,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:17:06,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 11:17:06,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:06,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 11:17:06,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=564, Unknown=7, NotChecked=48, Total=702 [2022-11-20 11:17:06,087 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 19 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 11:17:06,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:06,560 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2022-11-20 11:17:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:17:06,561 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 19 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2022-11-20 11:17:06,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:06,561 INFO L225 Difference]: With dead ends: 46 [2022-11-20 11:17:06,561 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 11:17:06,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=908, Unknown=7, NotChecked=62, Total=1122 [2022-11-20 11:17:06,563 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:06,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 192 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2022-11-20 11:17:06,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 11:17:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-20 11:17:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:17:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2022-11-20 11:17:06,578 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 37 [2022-11-20 11:17:06,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:06,579 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2022-11-20 11:17:06,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 19 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 11:17:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2022-11-20 11:17:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:17:06,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:06,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:06,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:17:06,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:06,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:06,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:06,790 INFO L85 PathProgramCache]: Analyzing trace with hash -859241559, now seen corresponding path program 1 times [2022-11-20 11:17:06,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:06,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541226464] [2022-11-20 11:17:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:06,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:17:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:17:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:08,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:17:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:17:08,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:08,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541226464] [2022-11-20 11:17:08,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541226464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:08,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655891786] [2022-11-20 11:17:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:08,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:08,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:08,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:17:08,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:17:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:09,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-20 11:17:09,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:09,116 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 11:17:09,174 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 11:17:09,296 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:17:09,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 11:17:09,481 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:17:09,481 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 7 [2022-11-20 11:17:09,629 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-11-20 11:17:09,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-11-20 11:17:09,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:17:09,834 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:17:09,834 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2022-11-20 11:17:10,299 INFO L321 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-11-20 11:17:10,299 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 85 treesize of output 30 [2022-11-20 11:17:10,315 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:17:10,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 10 [2022-11-20 11:17:10,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:10,532 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:17:10,533 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 2 case distinctions, treesize of input 91 treesize of output 79 [2022-11-20 11:17:10,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:10,545 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 66 treesize of output 64 [2022-11-20 11:17:10,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:10,576 INFO L321 Elim1Store]: treesize reduction 30, result has 47.4 percent of original size [2022-11-20 11:17:10,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 39 [2022-11-20 11:17:11,004 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-20 11:17:11,004 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 75 treesize of output 69 [2022-11-20 11:17:11,040 INFO L321 Elim1Store]: treesize reduction 114, result has 15.6 percent of original size [2022-11-20 11:17:11,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 108 treesize of output 66 [2022-11-20 11:17:11,083 INFO L321 Elim1Store]: treesize reduction 62, result has 24.4 percent of original size [2022-11-20 11:17:11,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 130 treesize of output 120 [2022-11-20 11:17:11,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:11,098 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 73 treesize of output 71 [2022-11-20 11:17:11,111 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 44 treesize of output 32 [2022-11-20 11:17:11,183 INFO L321 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2022-11-20 11:17:11,183 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 74 treesize of output 23 [2022-11-20 11:17:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:17:11,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:17:11,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655891786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:11,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:17:11,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 45 [2022-11-20 11:17:11,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556354196] [2022-11-20 11:17:11,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:17:11,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-20 11:17:11,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:11,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-20 11:17:11,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2366, Unknown=2, NotChecked=0, Total=2550 [2022-11-20 11:17:11,998 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 45 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 37 states have internal predecessors, (64), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:17:13,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:13,976 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2022-11-20 11:17:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:17:13,977 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 37 states have internal predecessors, (64), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 40 [2022-11-20 11:17:13,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:13,979 INFO L225 Difference]: With dead ends: 67 [2022-11-20 11:17:13,979 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 11:17:13,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=351, Invalid=3937, Unknown=2, NotChecked=0, Total=4290 [2022-11-20 11:17:13,982 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 82 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:13,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 396 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 637 Invalid, 0 Unknown, 9 Unchecked, 0.6s Time] [2022-11-20 11:17:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 11:17:13,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-11-20 11:17:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:17:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-11-20 11:17:13,995 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 40 [2022-11-20 11:17:13,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:13,995 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-11-20 11:17:13,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 37 states have internal predecessors, (64), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:17:13,996 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-11-20 11:17:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 11:17:13,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:13,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:14,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:17:14,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:14,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:14,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:14,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1146227584, now seen corresponding path program 1 times [2022-11-20 11:17:14,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:14,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787901024] [2022-11-20 11:17:14,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:14,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:17,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:17:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:17,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:17:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:17,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:17:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:17:18,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:18,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787901024] [2022-11-20 11:17:18,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787901024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:18,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839507487] [2022-11-20 11:17:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:18,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:18,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:18,146 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:17:18,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:17:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:18,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 139 conjunts are in the unsatisfiable core [2022-11-20 11:17:18,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:18,872 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 11:17:19,519 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:17:19,519 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 11:17:19,632 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 13 treesize of output 9 [2022-11-20 11:17:19,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:19,649 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 16 treesize of output 17 [2022-11-20 11:17:19,770 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 11:17:19,771 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 46 treesize of output 45 [2022-11-20 11:17:19,781 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 20 treesize of output 22 [2022-11-20 11:17:20,319 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:17:20,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 58 treesize of output 29 [2022-11-20 11:17:20,333 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 7 treesize of output 3 [2022-11-20 11:17:20,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:20,695 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 11:17:20,696 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 2 case distinctions, treesize of input 64 treesize of output 58 [2022-11-20 11:17:20,725 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 11:17:20,725 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 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-20 11:17:20,739 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 11:17:20,771 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-20 11:17:20,771 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 28 treesize of output 30 [2022-11-20 11:17:20,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:20,786 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 14 treesize of output 16 [2022-11-20 11:17:21,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:17:21,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:21,879 INFO L321 Elim1Store]: treesize reduction 145, result has 11.0 percent of original size [2022-11-20 11:17:21,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 190 treesize of output 90 [2022-11-20 11:17:21,924 INFO L321 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2022-11-20 11:17:21,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 200 treesize of output 129 [2022-11-20 11:17:21,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 47 [2022-11-20 11:17:21,966 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-20 11:17:21,967 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 54 treesize of output 48 [2022-11-20 11:17:21,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:21,980 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-20 11:17:21,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 50 [2022-11-20 11:17:22,183 INFO L321 Elim1Store]: treesize reduction 16, result has 40.7 percent of original size [2022-11-20 11:17:22,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 58 [2022-11-20 11:17:22,202 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 11:17:22,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 10 [2022-11-20 11:17:22,315 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 11:17:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:17:22,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:17:28,038 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| Int) (v_ArrVal_1038 (Array Int Int)) (v_ArrVal_1036 (Array Int Int)) (|v_ULTIMATE.start_dll_append_~last~0#1.offset_10| Int) (v_ArrVal_1033 (Array Int Int)) (v_ArrVal_1053 (Array Int Int)) (v_ArrVal_1031 (Array Int Int)) (v_ArrVal_1052 (Array Int Int)) (v_ArrVal_1051 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1052)) (.cse4 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1051))) (let ((.cse0 (select (select .cse1 (select (select .cse1 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|)) (+ (select (select .cse4 |c_ULTIMATE.start_dll_append_~head#1.base|) |c_ULTIMATE.start_dll_append_~head#1.offset|) 4)))) (let ((.cse2 (select .cse1 .cse0)) (.cse3 (+ |v_ULTIMATE.start_dll_append_~last~0#1.offset_10| 4))) (or (= (select (select (store (store (store |c_#memory_int| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1053) .cse0 v_ArrVal_1036) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1038) (select (select (store (store .cse1 .cse0 (store .cse2 .cse3 |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16|)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1031) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store (store .cse4 .cse0 (store (select .cse4 .cse0) .cse3 0)) |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| v_ArrVal_1033) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_main_~data~0#1|) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16|) 0)) (not (< |v_ULTIMATE.start_dll_append_#t~ret7#1.base_16| |c_#StackHeapBarrier|)) (not (= (select .cse2 .cse3) 0))))))) is different from false [2022-11-20 11:17:28,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839507487] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:28,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:17:28,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2022-11-20 11:17:28,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439058043] [2022-11-20 11:17:28,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:17:28,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-20 11:17:28,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:28,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-20 11:17:28,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=3551, Unknown=39, NotChecked=120, Total=3906 [2022-11-20 11:17:28,045 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 56 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 47 states have internal predecessors, (74), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:17:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:32,385 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2022-11-20 11:17:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:17:32,386 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 47 states have internal predecessors, (74), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 44 [2022-11-20 11:17:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:32,387 INFO L225 Difference]: With dead ends: 54 [2022-11-20 11:17:32,387 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 11:17:32,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=424, Invalid=6020, Unknown=40, NotChecked=158, Total=6642 [2022-11-20 11:17:32,391 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:32,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 462 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1004 Invalid, 0 Unknown, 32 Unchecked, 1.2s Time] [2022-11-20 11:17:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 11:17:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2022-11-20 11:17:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:17:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2022-11-20 11:17:32,405 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 44 [2022-11-20 11:17:32,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:32,405 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2022-11-20 11:17:32,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 47 states have internal predecessors, (74), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:17:32,406 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2022-11-20 11:17:32,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:17:32,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:32,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:32,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:17:32,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:32,618 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:32,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:32,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1173262244, now seen corresponding path program 1 times [2022-11-20 11:17:32,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:32,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546696425] [2022-11-20 11:17:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:32,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:32,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:17:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:32,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:17:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:32,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:17:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:17:32,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:32,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546696425] [2022-11-20 11:17:32,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546696425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:17:32,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:17:32,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:17:32,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100642746] [2022-11-20 11:17:32,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:17:32,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:17:32,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:32,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:17:32,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:17:32,842 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:17:32,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:32,970 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-11-20 11:17:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:17:32,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2022-11-20 11:17:32,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:32,973 INFO L225 Difference]: With dead ends: 56 [2022-11-20 11:17:32,973 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 11:17:32,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:17:32,974 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:32,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 114 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:17:32,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 11:17:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2022-11-20 11:17:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:17:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-11-20 11:17:32,988 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 45 [2022-11-20 11:17:32,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:32,989 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-11-20 11:17:32,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:17:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-11-20 11:17:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 11:17:32,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:32,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:32,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:17:32,991 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:32,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:32,991 INFO L85 PathProgramCache]: Analyzing trace with hash -731397669, now seen corresponding path program 2 times [2022-11-20 11:17:32,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:32,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138480625] [2022-11-20 11:17:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:32,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:17:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:17:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:36,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:17:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:17:36,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:36,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138480625] [2022-11-20 11:17:36,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138480625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:36,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017828708] [2022-11-20 11:17:36,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:17:36,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:36,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:36,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:17:36,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:17:36,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:17:36,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:17:36,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 187 conjunts are in the unsatisfiable core [2022-11-20 11:17:36,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:36,839 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 11:17:37,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:17:37,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:17:37,724 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:17:37,724 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 11:17:37,746 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 14 treesize of output 16 [2022-11-20 11:17:37,760 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 14 treesize of output 16 [2022-11-20 11:17:37,927 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 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-20 11:17:37,935 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 14 treesize of output 16 [2022-11-20 11:17:37,968 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 11 treesize of output 14 [2022-11-20 11:17:37,976 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 14 treesize of output 16 [2022-11-20 11:17:38,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:38,010 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 16 treesize of output 17 [2022-11-20 11:17:38,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:38,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:38,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:17:38,237 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:17:38,237 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 75 [2022-11-20 11:17:38,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:38,283 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-20 11:17:38,284 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2022-11-20 11:17:38,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:38,304 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 20 treesize of output 22 [2022-11-20 11:17:39,037 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:17:39,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 52 [2022-11-20 11:17:39,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-20 11:17:39,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:39,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:17:39,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 11:17:39,071 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 7 treesize of output 3 [2022-11-20 11:17:39,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:39,499 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-20 11:17:39,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 98 treesize of output 90 [2022-11-20 11:17:39,529 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 11:17:39,529 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 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-20 11:17:39,541 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 11:17:39,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:39,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:39,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:39,607 INFO L321 Elim1Store]: treesize reduction 60, result has 41.7 percent of original size [2022-11-20 11:17:39,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 68 [2022-11-20 11:17:39,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:39,668 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-20 11:17:39,669 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 28 treesize of output 30 [2022-11-20 11:17:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:17:40,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:17:44,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017828708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:44,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:17:44,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 46 [2022-11-20 11:17:44,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490343174] [2022-11-20 11:17:44,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:17:44,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 11:17:44,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:17:44,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 11:17:44,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3079, Unknown=45, NotChecked=0, Total=3306 [2022-11-20 11:17:44,044 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 46 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 38 states have internal predecessors, (69), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:17:47,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:17:47,454 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2022-11-20 11:17:47,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:17:47,455 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 38 states have internal predecessors, (69), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 46 [2022-11-20 11:17:47,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:17:47,456 INFO L225 Difference]: With dead ends: 79 [2022-11-20 11:17:47,456 INFO L226 Difference]: Without dead ends: 64 [2022-11-20 11:17:47,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=313, Invalid=4751, Unknown=48, NotChecked=0, Total=5112 [2022-11-20 11:17:47,459 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 38 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:17:47,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 395 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 701 Invalid, 0 Unknown, 60 Unchecked, 1.2s Time] [2022-11-20 11:17:47,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-20 11:17:47,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2022-11-20 11:17:47,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 11:17:47,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-11-20 11:17:47,479 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 46 [2022-11-20 11:17:47,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:17:47,479 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-11-20 11:17:47,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 38 states have internal predecessors, (69), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:17:47,480 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-11-20 11:17:47,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 11:17:47,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:17:47,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:17:47,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:17:47,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 11:17:47,688 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:17:47,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:17:47,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2018358036, now seen corresponding path program 1 times [2022-11-20 11:17:47,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:17:47,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832493960] [2022-11-20 11:17:47,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:47,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:17:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:17:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:51,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:17:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:51,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:17:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:17:52,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:17:52,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832493960] [2022-11-20 11:17:52,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832493960] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:17:52,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314082371] [2022-11-20 11:17:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:17:52,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:17:52,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:17:52,515 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:17:52,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64c6d406-ce5e-4a34-b4c4-c382516595c6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:17:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:17:52,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 176 conjunts are in the unsatisfiable core [2022-11-20 11:17:52,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:17:52,993 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 11:17:53,292 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:17:53,302 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 11:17:53,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:53,320 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 16 treesize of output 17 [2022-11-20 11:17:54,092 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:17:54,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 11:17:54,120 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 14 treesize of output 16 [2022-11-20 11:17:54,138 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 14 treesize of output 16 [2022-11-20 11:17:54,162 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 14 treesize of output 16 [2022-11-20 11:17:54,347 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 11 treesize of output 14 [2022-11-20 11:17:54,355 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 14 treesize of output 16 [2022-11-20 11:17:54,385 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 0 case distinctions, treesize of input 11 treesize of output 14 [2022-11-20 11:17:54,396 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 14 treesize of output 16 [2022-11-20 11:17:54,428 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 14 treesize of output 16 [2022-11-20 11:17:54,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:54,647 INFO L321 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2022-11-20 11:17:54,647 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 103 [2022-11-20 11:17:54,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:54,661 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 45 treesize of output 38 [2022-11-20 11:17:54,685 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-20 11:17:54,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2022-11-20 11:17:55,640 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-20 11:17:55,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 164 treesize of output 62 [2022-11-20 11:17:55,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:55,662 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:17:55,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 12 [2022-11-20 11:17:55,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:17:56,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:56,120 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-11-20 11:17:56,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 172 treesize of output 146 [2022-11-20 11:17:56,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:56,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:56,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:56,162 INFO L321 Elim1Store]: treesize reduction 35, result has 12.5 percent of original size [2022-11-20 11:17:56,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 146 treesize of output 145 [2022-11-20 11:17:56,203 INFO L321 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2022-11-20 11:17:56,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2022-11-20 11:17:56,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 11:17:57,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:57,968 INFO L321 Elim1Store]: treesize reduction 164, result has 21.5 percent of original size [2022-11-20 11:17:57,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 220 treesize of output 208 [2022-11-20 11:17:58,036 INFO L321 Elim1Store]: treesize reduction 45, result has 48.9 percent of original size [2022-11-20 11:17:58,037 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 60 [2022-11-20 11:17:58,189 INFO L321 Elim1Store]: treesize reduction 158, result has 18.6 percent of original size [2022-11-20 11:17:58,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 207 treesize of output 121 [2022-11-20 11:17:58,271 INFO L321 Elim1Store]: treesize reduction 100, result has 20.0 percent of original size [2022-11-20 11:17:58,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 255 treesize of output 217 [2022-11-20 11:17:58,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:58,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:17:58,376 INFO L321 Elim1Store]: treesize reduction 118, result has 23.4 percent of original size [2022-11-20 11:17:58,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 221 treesize of output 242 [2022-11-20 11:17:58,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 54 [2022-11-20 11:17:58,478 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 54 treesize of output 44 [2022-11-20 11:17:59,097 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:17:59,098 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 77 [2022-11-20 11:17:59,131 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 11:17:59,330 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 11:17:59,346 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 11:18:02,516 INFO L321 Elim1Store]: treesize reduction 116, result has 81.7 percent of original size [2022-11-20 11:18:02,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 17 new quantified variables, introduced 55 case distinctions, treesize of input 676 treesize of output 754 [2022-11-20 11:18:03,970 INFO L321 Elim1Store]: treesize reduction 122, result has 75.4 percent of original size [2022-11-20 11:18:03,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 14 new quantified variables, introduced 54 case distinctions, treesize of input 646 treesize of output 843