./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sqm.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sqm.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 950fd5ff5cc9d2c5e3d846192e43f4963ef3abd0ec7056eb5d764989d48b2064 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:15:05,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:15:05,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:15:05,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:15:05,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:15:05,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:15:05,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:15:05,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:15:05,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:15:05,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:15:05,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:15:05,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:15:05,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:15:05,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:15:05,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:15:05,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:15:05,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:15:05,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:15:05,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:15:05,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:15:05,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:15:05,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:15:05,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:15:05,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:15:05,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:15:05,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:15:05,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:15:05,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:15:05,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:15:05,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:15:05,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:15:05,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:15:05,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:15:05,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:15:05,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:15:05,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:15:05,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:15:05,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:15:05,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:15:05,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:15:05,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:15:05,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:15:05,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:15:05,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:15:05,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:15:05,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:15:05,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:15:05,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:15:05,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:15:05,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:15:05,925 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:15:05,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:15:05,927 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:15:05,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:15:05,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:15:05,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:15:05,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:15:05,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:15:05,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:15:05,929 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:15:05,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:15:05,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:15:05,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:15:05,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:15:05,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:15:05,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:15:05,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:05,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:15:05,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:15:05,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:15:05,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:15:05,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:15:05,939 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:15:05,939 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:15:05,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:15:05,940 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_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 950fd5ff5cc9d2c5e3d846192e43f4963ef3abd0ec7056eb5d764989d48b2064 [2022-11-16 12:15:06,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:15:06,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:15:06,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:15:06,278 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:15:06,278 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:15:06,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/array-fpi/sqm.c [2022-11-16 12:15:06,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/data/8bcba4b53/96c6325fd096454fa9169ac0c54459c1/FLAG35f629199 [2022-11-16 12:15:06,824 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:15:06,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/sv-benchmarks/c/array-fpi/sqm.c [2022-11-16 12:15:06,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/data/8bcba4b53/96c6325fd096454fa9169ac0c54459c1/FLAG35f629199 [2022-11-16 12:15:07,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/data/8bcba4b53/96c6325fd096454fa9169ac0c54459c1 [2022-11-16 12:15:07,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:15:07,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:15:07,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:07,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:15:07,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:15:07,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a05fa88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07, skipping insertion in model container [2022-11-16 12:15:07,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:15:07,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:15:07,438 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/sv-benchmarks/c/array-fpi/sqm.c[586,599] [2022-11-16 12:15:07,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:07,470 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:15:07,483 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/sv-benchmarks/c/array-fpi/sqm.c[586,599] [2022-11-16 12:15:07,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:07,508 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:15:07,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07 WrapperNode [2022-11-16 12:15:07,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:07,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:07,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:15:07,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:15:07,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,548 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-11-16 12:15:07,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:07,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:15:07,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:15:07,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:15:07,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,575 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:15:07,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:15:07,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:15:07,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:15:07,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (1/1) ... [2022-11-16 12:15:07,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:07,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:07,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:15:07,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:15:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:15:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:15:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:15:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:15:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:15:07,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:15:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:15:07,733 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:15:07,735 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:15:07,900 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:15:07,906 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:15:07,907 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:15:07,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:07 BoogieIcfgContainer [2022-11-16 12:15:07,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:15:07,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:15:07,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:15:07,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:15:07,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:15:07" (1/3) ... [2022-11-16 12:15:07,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7a59e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:15:07, skipping insertion in model container [2022-11-16 12:15:07,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:07" (2/3) ... [2022-11-16 12:15:07,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7a59e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:15:07, skipping insertion in model container [2022-11-16 12:15:07,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:15:07" (3/3) ... [2022-11-16 12:15:07,918 INFO L112 eAbstractionObserver]: Analyzing ICFG sqm.c [2022-11-16 12:15:07,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:15:07,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:15:07,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:15:07,996 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;@b75c9d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:15:07,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:15:08,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:15:08,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:08,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:08,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:08,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:08,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2022-11-16 12:15:08,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:08,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49980434] [2022-11-16 12:15:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:08,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:08,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:08,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49980434] [2022-11-16 12:15:08,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:15:08,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095348536] [2022-11-16 12:15:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:08,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:08,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:08,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:08,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:15:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:08,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:15:08,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:08,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:15:08,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095348536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:08,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:08,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:15:08,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456246937] [2022-11-16 12:15:08,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:08,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:15:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:08,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:15:08,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:15:08,476 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:08,492 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-11-16 12:15:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:15:08,494 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 12:15:08,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:08,501 INFO L225 Difference]: With dead ends: 38 [2022-11-16 12:15:08,502 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 12:15:08,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:15:08,508 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:08,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:15:08,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 12:15:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 12:15:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-16 12:15:08,541 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-11-16 12:15:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:08,541 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-16 12:15:08,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-16 12:15:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:15:08,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:08,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:08,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:08,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 12:15:08,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:08,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2022-11-16 12:15:08,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:08,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240258680] [2022-11-16 12:15:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:08,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:08,790 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:08,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052979158] [2022-11-16 12:15:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:08,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:08,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:08,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:08,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:15:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:08,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:15:08,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:09,024 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-16 12:15:09,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-16 12:15:09,052 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 8 treesize of output 7 [2022-11-16 12:15:09,081 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 8 treesize of output 7 [2022-11-16 12:15:09,198 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 [2022-11-16 12:15:09,214 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-11-16 12:15:09,220 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 [2022-11-16 12:15:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:09,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:15:09,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:09,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240258680] [2022-11-16 12:15:09,294 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:09,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052979158] [2022-11-16 12:15:09,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052979158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:09,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:09,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:15:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828038239] [2022-11-16 12:15:09,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:09,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:15:09,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:15:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:15:09,298 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:09,393 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-11-16 12:15:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:15:09,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-16 12:15:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:09,395 INFO L225 Difference]: With dead ends: 34 [2022-11-16 12:15:09,395 INFO L226 Difference]: Without dead ends: 32 [2022-11-16 12:15:09,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:15:09,397 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:09,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 56 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:15:09,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-16 12:15:09,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-11-16 12:15:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-16 12:15:09,405 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-11-16 12:15:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:09,406 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-16 12:15:09,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-16 12:15:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:15:09,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:09,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:09,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 12:15:09,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:09,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:09,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:09,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2022-11-16 12:15:09,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:09,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054525368] [2022-11-16 12:15:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:09,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:09,670 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:09,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073185712] [2022-11-16 12:15:09,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:09,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:09,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:09,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:09,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:15:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:09,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:15:09,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:09,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:15:09,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:09,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054525368] [2022-11-16 12:15:09,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:09,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073185712] [2022-11-16 12:15:09,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073185712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:09,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:09,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:15:09,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010517128] [2022-11-16 12:15:09,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:09,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:15:09,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:15:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:15:09,834 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:09,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:09,936 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2022-11-16 12:15:09,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:15:09,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:15:09,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:09,938 INFO L225 Difference]: With dead ends: 49 [2022-11-16 12:15:09,938 INFO L226 Difference]: Without dead ends: 40 [2022-11-16 12:15:09,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:15:09,940 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:09,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 29 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:15:09,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-16 12:15:09,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2022-11-16 12:15:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-16 12:15:09,947 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-11-16 12:15:09,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:09,947 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-16 12:15:09,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-16 12:15:09,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:15:09,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:09,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:09,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:10,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 12:15:10,155 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:10,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:10,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2022-11-16 12:15:10,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:10,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909155524] [2022-11-16 12:15:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:10,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:10,187 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:10,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310175608] [2022-11-16 12:15:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:10,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:10,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:10,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:10,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:15:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:10,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:15:10,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:10,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:10,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:10,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:10,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909155524] [2022-11-16 12:15:10,370 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:10,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310175608] [2022-11-16 12:15:10,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310175608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:10,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:10,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-11-16 12:15:10,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328164210] [2022-11-16 12:15:10,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:10,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:15:10,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:10,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:15:10,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:15:10,375 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:10,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:10,510 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-11-16 12:15:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:15:10,511 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:15:10,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:10,513 INFO L225 Difference]: With dead ends: 44 [2022-11-16 12:15:10,514 INFO L226 Difference]: Without dead ends: 37 [2022-11-16 12:15:10,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:15:10,521 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:10,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 41 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:15:10,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-16 12:15:10,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2022-11-16 12:15:10,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:10,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-16 12:15:10,528 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-11-16 12:15:10,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:10,528 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-16 12:15:10,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:10,529 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-16 12:15:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:15:10,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:10,530 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:10,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:10,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:10,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:10,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2022-11-16 12:15:10,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:10,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387648698] [2022-11-16 12:15:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:10,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:10,778 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:10,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503916862] [2022-11-16 12:15:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:10,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:10,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:10,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:10,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:15:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:10,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:15:10,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:10,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:15:10,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:10,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387648698] [2022-11-16 12:15:10,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:10,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503916862] [2022-11-16 12:15:10,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503916862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:15:10,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:15:10,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:15:10,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558510751] [2022-11-16 12:15:10,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:15:10,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:15:10,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:10,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:15:10,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:15:10,936 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:11,038 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-11-16 12:15:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:15:11,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:15:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:11,040 INFO L225 Difference]: With dead ends: 41 [2022-11-16 12:15:11,040 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 12:15:11,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:15:11,045 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:11,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 27 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:15:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 12:15:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2022-11-16 12:15:11,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:11,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-16 12:15:11,074 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2022-11-16 12:15:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:11,075 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-16 12:15:11,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-16 12:15:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:15:11,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:11,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:11,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:11,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:11,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:11,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2022-11-16 12:15:11,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:11,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198080075] [2022-11-16 12:15:11,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:11,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:11,317 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:11,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676900197] [2022-11-16 12:15:11,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:11,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:11,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:11,318 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:11,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:15:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:11,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 12:15:11,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:11,467 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 10 treesize of output 8 [2022-11-16 12:15:11,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:11,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-16 12:15:11,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 12:15:11,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:15:11,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:15:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:11,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:11,868 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_159 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2022-11-16 12:15:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-16 12:15:11,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:11,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198080075] [2022-11-16 12:15:11,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:11,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676900197] [2022-11-16 12:15:11,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676900197] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:11,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:11,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-16 12:15:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935704392] [2022-11-16 12:15:11,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:11,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:15:11,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:15:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=67, Unknown=1, NotChecked=16, Total=110 [2022-11-16 12:15:11,905 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:12,153 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-11-16 12:15:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:15:12,154 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 12:15:12,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:12,154 INFO L225 Difference]: With dead ends: 40 [2022-11-16 12:15:12,155 INFO L226 Difference]: Without dead ends: 38 [2022-11-16 12:15:12,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=153, Unknown=1, NotChecked=26, Total=240 [2022-11-16 12:15:12,156 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:12,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 83 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-16 12:15:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-16 12:15:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2022-11-16 12:15:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-16 12:15:12,162 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2022-11-16 12:15:12,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:12,162 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-16 12:15:12,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:12,163 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-16 12:15:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:15:12,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:12,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:12,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:12,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:15:12,370 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:12,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:12,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1267903976, now seen corresponding path program 2 times [2022-11-16 12:15:12,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:12,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419431217] [2022-11-16 12:15:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:12,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:12,405 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:12,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634397546] [2022-11-16 12:15:12,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:15:12,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:12,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:12,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:12,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:15:12,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:15:12,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:15:12,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:15:12,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:12,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:12,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:12,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419431217] [2022-11-16 12:15:12,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:12,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634397546] [2022-11-16 12:15:12,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634397546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:12,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:12,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-16 12:15:12,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104022216] [2022-11-16 12:15:12,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:12,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:15:12,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:12,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:15:12,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:15:12,597 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:12,750 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2022-11-16 12:15:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:15:12,751 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 12:15:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:12,752 INFO L225 Difference]: With dead ends: 61 [2022-11-16 12:15:12,752 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 12:15:12,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:15:12,753 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 52 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:12,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 34 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:15:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 12:15:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2022-11-16 12:15:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-16 12:15:12,760 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2022-11-16 12:15:12,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:12,760 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-16 12:15:12,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-16 12:15:12,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:15:12,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:12,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:12,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 12:15:12,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:15:12,966 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:12,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:12,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 3 times [2022-11-16 12:15:12,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:12,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810288548] [2022-11-16 12:15:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:12,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:13,014 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:13,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904136349] [2022-11-16 12:15:13,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:15:13,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:13,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:13,027 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:13,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:15:13,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:15:13,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:15:13,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:15:13,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:13,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:13,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:13,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810288548] [2022-11-16 12:15:13,268 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:13,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904136349] [2022-11-16 12:15:13,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904136349] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:13,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:13,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-16 12:15:13,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343391207] [2022-11-16 12:15:13,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:13,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:15:13,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:13,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:15:13,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:15:13,271 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:13,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:13,457 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2022-11-16 12:15:13,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:15:13,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-16 12:15:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:13,458 INFO L225 Difference]: With dead ends: 56 [2022-11-16 12:15:13,458 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 12:15:13,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:15:13,459 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 54 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:13,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 61 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:15:13,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 12:15:13,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2022-11-16 12:15:13,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:13,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-16 12:15:13,465 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2022-11-16 12:15:13,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:13,465 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-16 12:15:13,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:13,466 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-16 12:15:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 12:15:13,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:13,467 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:13,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:13,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:13,674 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:13,677 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2022-11-16 12:15:13,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:13,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646804359] [2022-11-16 12:15:13,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:13,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:13,707 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:13,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105252839] [2022-11-16 12:15:13,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:13,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:13,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:13,712 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:13,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:15:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:13,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 12:15:13,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:13,884 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 10 treesize of output 8 [2022-11-16 12:15:13,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:13,896 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 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 12:15:13,901 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-16 12:15:13,905 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 8 treesize of output 7 [2022-11-16 12:15:13,912 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 8 treesize of output 7 [2022-11-16 12:15:13,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:13,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 12:15:14,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:14,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-16 12:15:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:14,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:14,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:14,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646804359] [2022-11-16 12:15:14,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:14,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105252839] [2022-11-16 12:15:14,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105252839] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:14,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:14,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-11-16 12:15:14,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113030726] [2022-11-16 12:15:14,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:14,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:15:14,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:14,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:15:14,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:15:14,933 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:15,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:15,514 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2022-11-16 12:15:15,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:15:15,515 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-16 12:15:15,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:15,516 INFO L225 Difference]: With dead ends: 51 [2022-11-16 12:15:15,516 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 12:15:15,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:15:15,517 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:15,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 109 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 72 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2022-11-16 12:15:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 12:15:15,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2022-11-16 12:15:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-16 12:15:15,530 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2022-11-16 12:15:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:15,531 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-16 12:15:15,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-16 12:15:15,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 12:15:15,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:15,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:15,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:15,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:15,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:15,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 4 times [2022-11-16 12:15:15,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:15,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15292206] [2022-11-16 12:15:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:15,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:15,784 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:15,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878013749] [2022-11-16 12:15:15,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:15:15,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:15,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:15,793 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:15,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:15:16,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:15:16,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:15:16,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:15:16,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:16,063 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-16 12:15:16,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-16 12:15:16,077 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 8 treesize of output 7 [2022-11-16 12:15:16,087 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 8 treesize of output 7 [2022-11-16 12:15:16,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:16,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-11-16 12:15:16,157 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 [2022-11-16 12:15:16,166 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 10 treesize of output 8 [2022-11-16 12:15:16,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:16,225 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-16 12:15:16,231 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 [2022-11-16 12:15:16,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:15:16,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-16 12:15:16,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:16,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:16,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-16 12:15:16,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:16,413 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 21 treesize of output 20 [2022-11-16 12:15:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:16,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:15:17,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:17,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15292206] [2022-11-16 12:15:17,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:17,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878013749] [2022-11-16 12:15:17,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878013749] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:17,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:17,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2022-11-16 12:15:17,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140670562] [2022-11-16 12:15:17,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:17,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:15:17,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:17,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:15:17,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=196, Unknown=3, NotChecked=0, Total=272 [2022-11-16 12:15:17,043 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:17,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:17,505 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2022-11-16 12:15:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:15:17,506 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-16 12:15:17,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:17,507 INFO L225 Difference]: With dead ends: 72 [2022-11-16 12:15:17,507 INFO L226 Difference]: Without dead ends: 70 [2022-11-16 12:15:17,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=666, Unknown=4, NotChecked=0, Total=870 [2022-11-16 12:15:17,508 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 124 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:17,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 69 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 81 Invalid, 0 Unknown, 87 Unchecked, 0.1s Time] [2022-11-16 12:15:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-16 12:15:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 39. [2022-11-16 12:15:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-11-16 12:15:17,524 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 20 [2022-11-16 12:15:17,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:17,524 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-11-16 12:15:17,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-11-16 12:15:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:15:17,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:17,526 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:17,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:17,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:15:17,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:17,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:17,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1197174726, now seen corresponding path program 2 times [2022-11-16 12:15:17,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:17,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572473704] [2022-11-16 12:15:17,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:17,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:17,752 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:17,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56899547] [2022-11-16 12:15:17,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:15:17,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:17,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:17,765 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:17,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:15:17,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:15:17,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:15:17,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:15:17,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:15:17,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:15:18,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:18,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572473704] [2022-11-16 12:15:18,007 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:18,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56899547] [2022-11-16 12:15:18,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56899547] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:18,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:18,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-16 12:15:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054721059] [2022-11-16 12:15:18,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:18,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:15:18,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:18,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:15:18,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:15:18,010 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:18,164 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2022-11-16 12:15:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:15:18,165 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-16 12:15:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:18,165 INFO L225 Difference]: With dead ends: 63 [2022-11-16 12:15:18,165 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 12:15:18,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:15:18,167 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:18,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 53 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:15:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 12:15:18,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2022-11-16 12:15:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:18,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-16 12:15:18,181 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2022-11-16 12:15:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:18,181 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-16 12:15:18,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:18,182 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-16 12:15:18,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:15:18,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:18,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:18,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:18,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:18,389 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:18,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:18,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 3 times [2022-11-16 12:15:18,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:18,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792484600] [2022-11-16 12:15:18,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:18,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:18,436 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:18,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418776146] [2022-11-16 12:15:18,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:15:18,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:18,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:18,441 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:18,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:15:18,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:15:18,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:15:18,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-16 12:15:18,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:18,778 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-16 12:15:18,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-16 12:15:18,784 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 28 treesize of output 31 [2022-11-16 12:15:18,834 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-16 12:15:18,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 68 [2022-11-16 12:15:18,855 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 8 treesize of output 7 [2022-11-16 12:15:18,871 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2022-11-16 12:15:18,880 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 [2022-11-16 12:15:18,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 75 [2022-11-16 12:15:18,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:18,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-11-16 12:15:18,966 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 [2022-11-16 12:15:18,985 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 10 treesize of output 8 [2022-11-16 12:15:19,051 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-16 12:15:19,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:19,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-16 12:15:19,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 93 [2022-11-16 12:15:19,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,240 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 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-16 12:15:19,403 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 134 [2022-11-16 12:15:19,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:15:19,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 196 [2022-11-16 12:15:19,473 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 12:15:19,649 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:15:19,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 79 [2022-11-16 12:15:19,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:15:19,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 124 [2022-11-16 12:15:20,017 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-16 12:15:20,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 36 [2022-11-16 12:15:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:20,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:24,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:24,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792484600] [2022-11-16 12:15:24,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:15:24,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418776146] [2022-11-16 12:15:24,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418776146] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:24,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:15:24,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2022-11-16 12:15:24,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763807040] [2022-11-16 12:15:24,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:24,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:15:24,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:24,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:15:24,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:15:24,069 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:15:25,030 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2022-11-16 12:15:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:15:25,031 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-16 12:15:25,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:15:25,032 INFO L225 Difference]: With dead ends: 63 [2022-11-16 12:15:25,032 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 12:15:25,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 12:15:25,033 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:15:25,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2022-11-16 12:15:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 12:15:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2022-11-16 12:15:25,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 52 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:25,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2022-11-16 12:15:25,046 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 24 [2022-11-16 12:15:25,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:15:25,046 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2022-11-16 12:15:25,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:25,047 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2022-11-16 12:15:25,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:15:25,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:15:25,048 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:15:25,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:25,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:15:25,254 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:15:25,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:25,254 INFO L85 PathProgramCache]: Analyzing trace with hash -900609774, now seen corresponding path program 5 times [2022-11-16 12:15:25,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:25,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808750510] [2022-11-16 12:15:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:25,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:25,292 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:15:25,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490135695] [2022-11-16 12:15:25,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:15:25,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:25,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:25,307 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:25,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:16:06,495 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-16 12:16:06,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:16:06,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:16:06,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:16:06,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:16:06,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:06,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808750510] [2022-11-16 12:16:06,701 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:16:06,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490135695] [2022-11-16 12:16:06,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490135695] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:16:06,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:16:06,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-16 12:16:06,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228738510] [2022-11-16 12:16:06,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:06,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:16:06,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:06,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:16:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:16:06,707 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:06,927 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2022-11-16 12:16:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:16:06,928 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-16 12:16:06,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:06,929 INFO L225 Difference]: With dead ends: 102 [2022-11-16 12:16:06,929 INFO L226 Difference]: Without dead ends: 84 [2022-11-16 12:16:06,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:16:06,931 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 53 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:06,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 62 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:16:06,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-16 12:16:06,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 51. [2022-11-16 12:16:06,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2022-11-16 12:16:06,944 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 24 [2022-11-16 12:16:06,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:06,945 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2022-11-16 12:16:06,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:06,945 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-11-16 12:16:06,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 12:16:06,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:06,946 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:06,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:07,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:16:07,155 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:07,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1983767408, now seen corresponding path program 6 times [2022-11-16 12:16:07,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:07,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013372919] [2022-11-16 12:16:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:07,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:07,178 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:16:07,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341703925] [2022-11-16 12:16:07,178 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:16:07,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:07,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:07,179 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:07,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:16:07,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-16 12:16:07,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:16:07,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:16:07,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:07,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:07,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:07,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013372919] [2022-11-16 12:16:07,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:16:07,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341703925] [2022-11-16 12:16:07,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341703925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:16:07,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:16:07,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-16 12:16:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776711690] [2022-11-16 12:16:07,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:07,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:16:07,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:16:07,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:16:07,779 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:08,227 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2022-11-16 12:16:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:16:08,228 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-16 12:16:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:08,232 INFO L225 Difference]: With dead ends: 124 [2022-11-16 12:16:08,233 INFO L226 Difference]: Without dead ends: 112 [2022-11-16 12:16:08,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=680, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:16:08,234 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 229 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:08,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 102 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:16:08,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-16 12:16:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 66. [2022-11-16 12:16:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2022-11-16 12:16:08,262 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 26 [2022-11-16 12:16:08,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:08,262 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2022-11-16 12:16:08,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:08,263 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2022-11-16 12:16:08,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 12:16:08,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:08,264 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:08,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:08,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:16:08,478 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:08,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 4 times [2022-11-16 12:16:08,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:08,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045178896] [2022-11-16 12:16:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:08,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:08,543 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:16:08,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451828928] [2022-11-16 12:16:08,547 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:16:08,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:08,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:08,549 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:08,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:16:08,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:16:08,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:16:08,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-16 12:16:08,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:08,870 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 10 treesize of output 8 [2022-11-16 12:16:08,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:08,896 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 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 12:16:08,901 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-16 12:16:08,906 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 8 treesize of output 7 [2022-11-16 12:16:08,913 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 8 treesize of output 7 [2022-11-16 12:16:08,962 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-16 12:16:08,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:08,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:08,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:08,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:08,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:08,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-16 12:16:09,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 106 treesize of output 47 [2022-11-16 12:16:09,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,127 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 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-16 12:16:09,260 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 163 [2022-11-16 12:16:09,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:09,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 199 [2022-11-16 12:16:09,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 103 [2022-11-16 12:16:09,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:16:09,471 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-16 12:16:09,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 59 [2022-11-16 12:16:09,923 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-16 12:16:09,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 45 [2022-11-16 12:16:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:09,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:24,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:24,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045178896] [2022-11-16 12:16:24,151 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:16:24,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451828928] [2022-11-16 12:16:24,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451828928] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:16:24,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:16:24,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2022-11-16 12:16:24,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375355215] [2022-11-16 12:16:24,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:24,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:16:24,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:16:24,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=501, Unknown=1, NotChecked=0, Total=600 [2022-11-16 12:16:24,154 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:26,330 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2022-11-16 12:16:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 12:16:26,331 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-16 12:16:26,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:26,331 INFO L225 Difference]: With dead ends: 83 [2022-11-16 12:16:26,331 INFO L226 Difference]: Without dead ends: 53 [2022-11-16 12:16:26,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=167, Invalid=824, Unknown=1, NotChecked=0, Total=992 [2022-11-16 12:16:26,333 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:26,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 137 Invalid, 0 Unknown, 70 Unchecked, 0.5s Time] [2022-11-16 12:16:26,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-16 12:16:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-16 12:16:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-11-16 12:16:26,344 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 28 [2022-11-16 12:16:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:26,344 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-11-16 12:16:26,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-11-16 12:16:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 12:16:26,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:26,345 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:26,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:26,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:26,552 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:26,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:26,553 INFO L85 PathProgramCache]: Analyzing trace with hash 48972360, now seen corresponding path program 5 times [2022-11-16 12:16:26,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:26,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195335214] [2022-11-16 12:16:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:26,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:26,572 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:16:26,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978278932] [2022-11-16 12:16:26,572 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:16:26,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:26,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:26,574 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:26,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:18:41,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-16 12:18:41,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:18:41,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-16 12:18:41,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:41,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:18:41,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,284 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 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 12:18:41,288 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-16 12:18:41,298 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 8 treesize of output 7 [2022-11-16 12:18:41,304 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 8 treesize of output 7 [2022-11-16 12:18:41,350 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-16 12:18:41,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-16 12:18:41,372 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 12:18:41,443 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-16 12:18:41,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-16 12:18:41,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 67 treesize of output 17 [2022-11-16 12:18:41,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 12:18:41,623 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 129 [2022-11-16 12:18:41,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:41,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 196 [2022-11-16 12:18:41,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 104 [2022-11-16 12:18:41,786 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 91 [2022-11-16 12:18:41,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 157 [2022-11-16 12:18:41,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 56 [2022-11-16 12:18:41,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:41,916 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 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-16 12:18:42,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 52 treesize of output 28 [2022-11-16 12:18:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:42,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:18:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:55,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:55,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195335214] [2022-11-16 12:18:55,339 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:18:55,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978278932] [2022-11-16 12:18:55,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978278932] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:18:55,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:18:55,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 29 [2022-11-16 12:18:55,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463688255] [2022-11-16 12:18:55,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:18:55,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-16 12:18:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-16 12:18:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:18:55,342 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:56,400 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2022-11-16 12:18:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:18:56,401 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-16 12:18:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:56,402 INFO L225 Difference]: With dead ends: 88 [2022-11-16 12:18:56,403 INFO L226 Difference]: Without dead ends: 86 [2022-11-16 12:18:56,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 12:18:56,404 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:56,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 82 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 72 Invalid, 0 Unknown, 117 Unchecked, 0.2s Time] [2022-11-16 12:18:56,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-16 12:18:56,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2022-11-16 12:18:56,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.144736842105263) internal successors, (87), 76 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:56,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2022-11-16 12:18:56,421 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 28 [2022-11-16 12:18:56,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:56,421 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2022-11-16 12:18:56,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:56,422 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2022-11-16 12:18:56,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 12:18:56,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:56,423 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:56,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:56,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:18:56,639 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:56,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:56,639 INFO L85 PathProgramCache]: Analyzing trace with hash 778799246, now seen corresponding path program 7 times [2022-11-16 12:18:56,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:56,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441138267] [2022-11-16 12:18:56,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:56,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:56,653 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:18:56,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237590877] [2022-11-16 12:18:56,654 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:18:56,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:18:56,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:18:56,655 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:18:56,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:18:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:57,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-16 12:18:57,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:57,668 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-16 12:18:57,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-16 12:18:57,676 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 8 treesize of output 7 [2022-11-16 12:18:57,685 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 8 treesize of output 7 [2022-11-16 12:18:57,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:18:57,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-11-16 12:18:57,740 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 [2022-11-16 12:18:57,745 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 10 treesize of output 8 [2022-11-16 12:18:57,752 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (not .cse0) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (let ((.cse1 (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (or (and .cse1 .cse0) (and (exists ((v_DerPreprocessor_15 (Array Int Int)) (v_DerPreprocessor_16 (Array Int Int))) (and (= (select v_DerPreprocessor_16 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~b~0#1.base|)))) .cse1))) (= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from true [2022-11-16 12:18:57,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:57,766 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-16 12:18:57,770 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 [2022-11-16 12:18:57,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:18:57,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:18:57,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:18:57,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-16 12:18:57,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:57,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:57,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-16 12:18:57,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:57,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:57,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 67 treesize of output 17 [2022-11-16 12:18:58,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-16 12:18:58,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:58,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:58,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-16 12:18:58,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:58,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:58,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 65 treesize of output 20 [2022-11-16 12:18:58,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-16 12:18:58,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:58,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:58,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-16 12:18:58,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:58,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:58,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 67 treesize of output 17 [2022-11-16 12:18:58,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:58,169 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 21 treesize of output 20 [2022-11-16 12:18:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-16 12:18:58,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:18:59,459 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_678 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2022-11-16 12:18:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 7 not checked. [2022-11-16 12:18:59,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:59,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441138267] [2022-11-16 12:18:59,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:18:59,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237590877] [2022-11-16 12:18:59,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237590877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:18:59,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:18:59,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2022-11-16 12:18:59,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168251686] [2022-11-16 12:18:59,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:18:59,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:18:59,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:59,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:18:59,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=408, Unknown=2, NotChecked=90, Total=650 [2022-11-16 12:18:59,497 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:00,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:00,242 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2022-11-16 12:19:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:19:00,243 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-16 12:19:00,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:00,243 INFO L225 Difference]: With dead ends: 116 [2022-11-16 12:19:00,243 INFO L226 Difference]: Without dead ends: 114 [2022-11-16 12:19:00,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=259, Invalid=937, Unknown=2, NotChecked=134, Total=1332 [2022-11-16 12:19:00,245 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 71 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:00,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 82 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 130 Invalid, 0 Unknown, 155 Unchecked, 0.3s Time] [2022-11-16 12:19:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-16 12:19:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 85. [2022-11-16 12:19:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 84 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2022-11-16 12:19:00,262 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 28 [2022-11-16 12:19:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:00,263 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2022-11-16 12:19:00,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:00,263 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2022-11-16 12:19:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 12:19:00,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:00,264 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:00,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:00,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:19:00,471 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:00,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:00,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1146912830, now seen corresponding path program 6 times [2022-11-16 12:19:00,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:00,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853820248] [2022-11-16 12:19:00,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:00,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:00,488 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:19:00,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318483578] [2022-11-16 12:19:00,488 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:19:00,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:00,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:00,489 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:00,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:19:01,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-16 12:19:01,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:19:01,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-16 12:19:01,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:01,103 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-16 12:19:01,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-16 12:19:01,131 INFO L321 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2022-11-16 12:19:01,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 67 [2022-11-16 12:19:01,140 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 8 treesize of output 7 [2022-11-16 12:19:01,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-16 12:19:01,194 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 [2022-11-16 12:19:01,204 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 8 treesize of output 7 [2022-11-16 12:19:01,211 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 8 treesize of output 7 [2022-11-16 12:19:01,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 17 treesize of output 36 [2022-11-16 12:19:01,241 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 10 treesize of output 8 [2022-11-16 12:19:01,317 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-16 12:19:01,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:19:01,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-16 12:19:01,513 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 116 [2022-11-16 12:19:01,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:19:01,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 185 [2022-11-16 12:19:01,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 47 [2022-11-16 12:19:01,748 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 147 [2022-11-16 12:19:01,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:01,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 216 [2022-11-16 12:19:02,209 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 159 [2022-11-16 12:19:02,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:19:02,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 199 [2022-11-16 12:19:02,292 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 12:19:02,593 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:19:02,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 299 treesize of output 269 [2022-11-16 12:19:02,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 243 [2022-11-16 12:19:02,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 72 [2022-11-16 12:19:02,955 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:19:02,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 203 treesize of output 173 [2022-11-16 12:19:02,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:19:02,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:02,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 243 [2022-11-16 12:19:03,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:03,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:03,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:03,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:03,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:03,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:03,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:03,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:03,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:19:03,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 127 [2022-11-16 12:19:03,976 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2022-11-16 12:19:03,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 55 [2022-11-16 12:19:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:04,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:31,119 WARN L233 SmtUtils]: Spent 26.24s on a formula simplification. DAG size of input: 70 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:19:45,344 WARN L233 SmtUtils]: Spent 14.08s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:20:26,335 WARN L233 SmtUtils]: Spent 38.42s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:21:01,427 WARN L233 SmtUtils]: Spent 34.63s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:22:09,035 WARN L233 SmtUtils]: Spent 1.04m on a formula simplification that was a NOOP. DAG size: 170 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:22:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:24,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:24,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853820248] [2022-11-16 12:22:24,478 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:22:24,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318483578] [2022-11-16 12:22:24,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318483578] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:22:24,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:22:24,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2022-11-16 12:22:24,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849127889] [2022-11-16 12:22:24,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:22:24,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 12:22:24,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:24,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 12:22:24,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1610, Unknown=5, NotChecked=0, Total=1980 [2022-11-16 12:22:24,480 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:32,258 WARN L233 SmtUtils]: Spent 45.44s on a formula simplification that was a NOOP. DAG size: 186 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:23:45,812 WARN L233 SmtUtils]: Spent 8.54s on a formula simplification. DAG size of input: 154 DAG size of output: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:23:47,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:47,751 INFO L93 Difference]: Finished difference Result 124 states and 142 transitions. [2022-11-16 12:23:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-16 12:23:47,751 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-16 12:23:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:47,752 INFO L225 Difference]: With dead ends: 124 [2022-11-16 12:23:47,752 INFO L226 Difference]: Without dead ends: 122 [2022-11-16 12:23:47,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 281.6s TimeCoverageRelationStatistics Valid=683, Invalid=2964, Unknown=13, NotChecked=0, Total=3660 [2022-11-16 12:23:47,753 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 65 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 298 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:47,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 154 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 137 Invalid, 0 Unknown, 298 Unchecked, 0.5s Time] [2022-11-16 12:23:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-16 12:23:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2022-11-16 12:23:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.180952380952381) internal successors, (124), 105 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions. [2022-11-16 12:23:47,780 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 32 [2022-11-16 12:23:47,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:47,780 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions. [2022-11-16 12:23:47,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:47,781 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions. [2022-11-16 12:23:47,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 12:23:47,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:47,782 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:47,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:47,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:23:47,983 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:47,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:47,983 INFO L85 PathProgramCache]: Analyzing trace with hash 917381246, now seen corresponding path program 7 times [2022-11-16 12:23:47,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:47,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070373065] [2022-11-16 12:23:47,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:47,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:48,000 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:23:48,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53481576] [2022-11-16 12:23:48,000 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:23:48,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:48,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:48,002 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:48,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:23:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:48,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:23:48,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:23:48,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:23:48,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:48,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070373065] [2022-11-16 12:23:48,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:23:48,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53481576] [2022-11-16 12:23:48,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53481576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:48,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:23:48,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-11-16 12:23:48,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640241898] [2022-11-16 12:23:48,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:48,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:23:48,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:48,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:23:48,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:23:48,317 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:23:48,829 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2022-11-16 12:23:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:23:48,830 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-16 12:23:48,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:23:48,831 INFO L225 Difference]: With dead ends: 159 [2022-11-16 12:23:48,831 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 12:23:48,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:23:48,832 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 143 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:23:48,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 142 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:23:48,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 12:23:48,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 59. [2022-11-16 12:23:48,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 58 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2022-11-16 12:23:48,849 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 32 [2022-11-16 12:23:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:23:48,849 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2022-11-16 12:23:48,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2022-11-16 12:23:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 12:23:48,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:23:48,850 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:48,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:49,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:49,051 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:23:49,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:49,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1910230140, now seen corresponding path program 8 times [2022-11-16 12:23:49,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:49,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382418110] [2022-11-16 12:23:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:49,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:49,071 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:23:49,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475001702] [2022-11-16 12:23:49,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:23:49,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:49,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:49,073 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:49,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:23:49,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:23:49,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:49,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-16 12:23:49,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:49,925 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 10 treesize of output 8 [2022-11-16 12:23:49,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:49,936 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 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 12:23:49,941 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-16 12:23:49,944 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 8 treesize of output 7 [2022-11-16 12:23:49,951 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 8 treesize of output 7 [2022-11-16 12:23:49,982 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-16 12:23:49,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-16 12:23:50,008 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 12:23:50,097 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-16 12:23:50,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-16 12:23:50,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 67 treesize of output 17 [2022-11-16 12:23:50,182 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-16 12:23:50,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-16 12:23:50,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 73 treesize of output 24 [2022-11-16 12:23:50,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-16 12:23:50,390 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 129 [2022-11-16 12:23:50,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:23:50,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 196 [2022-11-16 12:23:50,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 99 [2022-11-16 12:23:50,566 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2022-11-16 12:23:50,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 123 [2022-11-16 12:23:50,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 36 [2022-11-16 12:23:50,681 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2022-11-16 12:23:50,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 123 [2022-11-16 12:23:50,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:23:50,837 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 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-16 12:23:51,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 52 treesize of output 28 [2022-11-16 12:23:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:51,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:24:50,694 WARN L233 SmtUtils]: Spent 9.35s on a formula simplification. DAG size of input: 119 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:24:50,710 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:24:50,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:24:50,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382418110] [2022-11-16 12:24:50,710 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:24:50,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475001702] [2022-11-16 12:24:50,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475001702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:24:50,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:24:50,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21] total 34 [2022-11-16 12:24:50,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608149195] [2022-11-16 12:24:50,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:24:50,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 12:24:50,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:24:50,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 12:24:50,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=938, Unknown=10, NotChecked=0, Total=1122 [2022-11-16 12:24:50,713 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:25:02,713 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2022-11-16 12:25:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 12:25:02,714 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-16 12:25:02,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:25:02,715 INFO L225 Difference]: With dead ends: 115 [2022-11-16 12:25:02,715 INFO L226 Difference]: Without dead ends: 113 [2022-11-16 12:25:02,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 70.4s TimeCoverageRelationStatistics Valid=381, Invalid=2157, Unknown=12, NotChecked=0, Total=2550 [2022-11-16 12:25:02,717 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:25:02,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 119 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 204 Unchecked, 0.2s Time] [2022-11-16 12:25:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-16 12:25:02,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 94. [2022-11-16 12:25:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 93 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 110 transitions. [2022-11-16 12:25:02,750 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 110 transitions. Word has length 32 [2022-11-16 12:25:02,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:25:02,751 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 110 transitions. [2022-11-16 12:25:02,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 110 transitions. [2022-11-16 12:25:02,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 12:25:02,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:25:02,752 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:02,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:25:02,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:25:02,952 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:25:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:02,952 INFO L85 PathProgramCache]: Analyzing trace with hash -831401164, now seen corresponding path program 9 times [2022-11-16 12:25:02,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:02,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739114364] [2022-11-16 12:25:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:02,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:02,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:25:02,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35846995] [2022-11-16 12:25:02,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:25:02,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:25:02,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:25:02,970 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:25:02,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8041c339-626d-45b8-95c3-a9d2ee546e62/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 12:25:03,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:25:03,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:25:03,545 WARN L261 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-16 12:25:03,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:25:03,602 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-16 12:25:03,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-16 12:25:03,609 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 28 treesize of output 31 [2022-11-16 12:25:03,645 INFO L321 Elim1Store]: treesize reduction 36, result has 28.0 percent of original size [2022-11-16 12:25:03,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 64 [2022-11-16 12:25:03,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-16 12:25:03,678 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 [2022-11-16 12:25:03,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 17 treesize of output 36 [2022-11-16 12:25:03,735 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 8 treesize of output 7 [2022-11-16 12:25:03,746 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 8 treesize of output 7 [2022-11-16 12:25:03,759 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 10 treesize of output 8 [2022-11-16 12:25:03,838 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-16 12:25:03,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:25:03,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:03,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:03,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:03,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-16 12:25:03,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:03,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:03,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:03,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 42 [2022-11-16 12:25:04,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:04,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:04,021 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 0 case distinctions, treesize of input 45 treesize of output 44 [2022-11-16 12:25:04,125 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 123 [2022-11-16 12:25:04,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:04,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:04,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:04,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:04,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:04,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:04,183 INFO L321 Elim1Store]: treesize reduction 131, result has 0.8 percent of original size [2022-11-16 12:25:04,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 197 [2022-11-16 12:25:04,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:04,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:04,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 96 [2022-11-16 12:25:06,328 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 329 treesize of output 301 [2022-11-16 12:25:06,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:25:06,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:06,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:06,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:06,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 199 [2022-11-16 12:25:06,351 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 12:25:07,616 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:25:07,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 401 treesize of output 367 [2022-11-16 12:25:07,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:07,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:07,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:07,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:07,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:07,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 242 [2022-11-16 12:25:07,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:07,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:07,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:07,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:07,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 52 [2022-11-16 12:25:09,301 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 12:25:09,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 373 treesize of output 335 [2022-11-16 12:25:09,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:09,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:09,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:09,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:09,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:09,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:09,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:09,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 279 [2022-11-16 12:25:16,874 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:25:16,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 245 treesize of output 209 [2022-11-16 12:25:16,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:16,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:16,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:16,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:16,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:16,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:16,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:16,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:25:16,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:16,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:25:16,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 42 [2022-11-16 12:25:16,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 33 [2022-11-16 12:25:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:17,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:25:54,742 WARN L233 SmtUtils]: Spent 17.64s on a formula simplification. DAG size of input: 152 DAG size of output: 134 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:26:26,094 WARN L233 SmtUtils]: Spent 14.63s on a formula simplification that was a NOOP. DAG size: 161 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:26:28,821 WARN L855 $PredicateComparison]: unable to prove that (or (< 4 c_~N~0) (let ((.cse47 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse0 (<= .cse47 2147483647)) (.cse46 (* .cse47 8)) (.cse45 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse27 (<= .cse45 2147483647)) (.cse25 (+ .cse46 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse16 (not .cse0)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse14 (+ .cse46 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse26 (* .cse45 8))) (and (or (let ((.cse15 (+ 2 (select .cse13 (+ .cse26 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or .cse0 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse11 (let ((.cse12 (store .cse13 .cse14 .cse15))) (store .cse12 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse12 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse11))) (let ((.cse9 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse1 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= (let ((.cse6 (select .cse11 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse4 (store .cse9 .cse10 (+ .cse1 2 .cse6)))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse1 .cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse4 .cse5 (+ .cse1 .cse2 4 .cse6))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse6)))) 10) (not (= .cse1 1))))))))) (or .cse16 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse23 (let ((.cse24 (store .cse13 .cse25 .cse15))) (store .cse24 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse24 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse23))) (let ((.cse22 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse18 (select .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse21 (select .cse23 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse20 (store .cse22 .cse10 (+ .cse18 2 .cse21)))) (let ((.cse17 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse17 .cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse20 .cse5 (+ .cse17 .cse18 .cse21 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse21)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse18 1))))))))))) .cse27) (or (not .cse27) (let ((.cse36 (+ 2 (select .cse13 (+ .cse26 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse34 (let ((.cse35 (store .cse13 .cse25 .cse36))) (store .cse35 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse35 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse34))) (let ((.cse33 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse28 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse28 1)) (= (let ((.cse30 (select .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse32 (store .cse33 .cse10 (+ .cse30 2 .cse28)))) (let ((.cse29 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse29 .cse30 .cse28 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 .cse5 (+ .cse29 .cse30 .cse28 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))))) 10))))))) .cse16) (or .cse0 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse43 (let ((.cse44 (store .cse13 .cse14 .cse36))) (store .cse44 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse44 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse43))) (let ((.cse42 (select .cse37 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse40 (select .cse42 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse39 (select .cse43 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse38 (store .cse42 .cse10 (+ .cse39 .cse40 2)))) (let ((.cse41 (select (select (store .cse37 |c_ULTIMATE.start_main_~a~0#1.base| .cse38) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ (select (select (store .cse37 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse38 .cse5 (+ .cse39 .cse40 4 .cse41))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse39 .cse40 .cse41)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse40 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0))))))))))))))) (not (< 3 c_~N~0))) is different from true [2022-11-16 12:26:33,726 WARN L855 $PredicateComparison]: unable to prove that (or (< 4 c_~N~0) (not (< 3 c_~N~0)) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (let ((.cse74 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse75 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse71 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse29 (<= .cse75 2147483647)) (.cse73 (* .cse75 8)) (.cse72 (* .cse74 8)) (.cse17 (<= .cse74 2147483647))) (let ((.cse39 (not .cse17)) (.cse38 (+ .cse72 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (+ .cse73 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse27 (+ .cse73 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse28 (not .cse29)) (.cse13 (+ .cse72 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse41 (* 8 .cse71)) (.cse42 (<= .cse71 2147483647))) (and (or (let ((.cse40 (select .cse12 (+ .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse16 (+ .cse40 4)) (.cse14 (+ 2 .cse40))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse10 (let ((.cse11 (store (store .cse12 .cse13 .cse14) .cse15 .cse16))) (store .cse11 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse11 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10))) (let ((.cse8 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= .cse0 1)) (= (let ((.cse1 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse4 (store .cse8 .cse9 (+ .cse1 2 .cse0)))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse1 .cse2 .cse0 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse4 .cse5 (+ .cse1 .cse2 4 .cse0))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6))))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0))))))) .cse17) (or (let ((.cse26 (store .cse12 .cse38 .cse14))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse24 (let ((.cse25 (store .cse26 .cse27 .cse16))) (store .cse25 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse25 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse24))) (let ((.cse23 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse18 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse22 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse20 (store .cse23 .cse9 (+ .cse18 2 .cse22)))) (let ((.cse21 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse20 .cse5 (+ .cse18 .cse21 .cse22 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse21 .cse22)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse18 1)))))))) .cse28) (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse36 (let ((.cse37 (store .cse26 .cse15 .cse16))) (store .cse37 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse37 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse36))) (let ((.cse35 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse30 (select .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse34 (select .cse36 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse32 (store .cse35 .cse9 (+ .cse30 2 .cse34)))) (let ((.cse33 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse30 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 .cse5 (+ .cse30 4 .cse33 .cse34))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse33 .cse34)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse30 1))))))))))) .cse39)))) (not .cse42)) (or (let ((.cse70 (select .cse12 (+ (- 34359738368) .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse52 (+ .cse70 4)) (.cse51 (+ .cse70 2))) (and (or .cse39 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse49 (let ((.cse50 (store (store .cse12 .cse38 .cse51) .cse27 .cse52))) (store .cse50 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse50 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse49))) (let ((.cse48 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse43 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse43 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= 10 (let ((.cse46 (select .cse49 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse45 (store .cse48 .cse9 (+ .cse43 .cse46 2)))) (let ((.cse47 (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse45) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse45 .cse5 (+ .cse43 .cse46 .cse47 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse43 .cse46 .cse47)))))))))))) (or (let ((.cse61 (store .cse12 .cse13 .cse51))) (and (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse59 (let ((.cse60 (store .cse61 .cse15 .cse52))) (store .cse60 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse60 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse55 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse59))) (let ((.cse58 (select .cse55 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse57 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse53 (select .cse59 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse56 (store .cse58 .cse9 (+ .cse53 2 .cse57)))) (let ((.cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| .cse56) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse53 .cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse56 .cse5 (+ .cse53 .cse54 4 .cse57))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse57)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse57 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0)))))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse68 (let ((.cse69 (store .cse61 .cse27 .cse52))) (store .cse69 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse69 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse64 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse68))) (let ((.cse67 (select .cse64 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse62 (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse62 1)) (= (let ((.cse63 (select .cse68 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse65 (store .cse67 .cse9 (+ .cse63 2 .cse62)))) (let ((.cse66 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| .cse65) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse63 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse65 .cse5 (+ .cse63 .cse66 .cse62 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse66 .cse62)))) 10))))))) .cse28))) .cse17)))) .cse42)))))) is different from true [2022-11-16 12:26:33,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:26:33,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:26:33,772 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-16 12:26:33,773 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 3 case distinctions, treesize of input 2927 treesize of output 1 [2022-11-16 12:26:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-16 12:26:33,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:26:33,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739114364] [2022-11-16 12:26:33,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:26:33,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35846995] [2022-11-16 12:26:33,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35846995] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:26:33,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:26:33,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-16 12:26:33,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526416041] [2022-11-16 12:26:33,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:26:33,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 12:26:33,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:26:33,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 12:26:33,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1715, Unknown=3, NotChecked=178, Total=2256 [2022-11-16 12:26:33,781 INFO L87 Difference]: Start difference. First operand 94 states and 110 transitions. Second operand has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:26:56,130 WARN L233 SmtUtils]: Spent 12.74s on a formula simplification. DAG size of input: 241 DAG size of output: 115 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:26:58,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 12:27:01,750 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (and (or (< 4 c_~N~0) (not (< 3 c_~N~0)) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (let ((.cse74 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse75 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse71 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse29 (<= .cse75 2147483647)) (.cse73 (* .cse75 8)) (.cse72 (* .cse74 8)) (.cse17 (<= .cse74 2147483647))) (let ((.cse39 (not .cse17)) (.cse38 (+ .cse72 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (+ .cse73 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse27 (+ .cse73 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse28 (not .cse29)) (.cse13 (+ .cse72 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse41 (* 8 .cse71)) (.cse42 (<= .cse71 2147483647))) (and (or (let ((.cse40 (select .cse12 (+ .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse16 (+ .cse40 4)) (.cse14 (+ 2 .cse40))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse10 (let ((.cse11 (store (store .cse12 .cse13 .cse14) .cse15 .cse16))) (store .cse11 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse11 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10))) (let ((.cse8 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= .cse0 1)) (= (let ((.cse1 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse4 (store .cse8 .cse9 (+ .cse1 2 .cse0)))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse1 .cse2 .cse0 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse4 .cse5 (+ .cse1 .cse2 4 .cse0))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6))))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0))))))) .cse17) (or (let ((.cse26 (store .cse12 .cse38 .cse14))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse24 (let ((.cse25 (store .cse26 .cse27 .cse16))) (store .cse25 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse25 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse24))) (let ((.cse23 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse18 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse22 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse20 (store .cse23 .cse9 (+ .cse18 2 .cse22)))) (let ((.cse21 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse20 .cse5 (+ .cse18 .cse21 .cse22 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse21 .cse22)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse18 1)))))))) .cse28) (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse36 (let ((.cse37 (store .cse26 .cse15 .cse16))) (store .cse37 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse37 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse36))) (let ((.cse35 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse30 (select .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse34 (select .cse36 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse32 (store .cse35 .cse9 (+ .cse30 2 .cse34)))) (let ((.cse33 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse30 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 .cse5 (+ .cse30 4 .cse33 .cse34))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse33 .cse34)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse30 1))))))))))) .cse39)))) (not .cse42)) (or (let ((.cse70 (select .cse12 (+ (- 34359738368) .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse52 (+ .cse70 4)) (.cse51 (+ .cse70 2))) (and (or .cse39 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse49 (let ((.cse50 (store (store .cse12 .cse38 .cse51) .cse27 .cse52))) (store .cse50 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse50 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse49))) (let ((.cse48 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse43 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse43 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= 10 (let ((.cse46 (select .cse49 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse45 (store .cse48 .cse9 (+ .cse43 .cse46 2)))) (let ((.cse47 (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse45) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse45 .cse5 (+ .cse43 .cse46 .cse47 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse43 .cse46 .cse47)))))))))))) (or (let ((.cse61 (store .cse12 .cse13 .cse51))) (and (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse59 (let ((.cse60 (store .cse61 .cse15 .cse52))) (store .cse60 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse60 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse55 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse59))) (let ((.cse58 (select .cse55 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse57 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse53 (select .cse59 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse56 (store .cse58 .cse9 (+ .cse53 2 .cse57)))) (let ((.cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| .cse56) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse53 .cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse56 .cse5 (+ .cse53 .cse54 4 .cse57))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse57)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse57 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0)))))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse68 (let ((.cse69 (store .cse61 .cse27 .cse52))) (store .cse69 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse69 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse64 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse68))) (let ((.cse67 (select .cse64 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse62 (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse62 1)) (= (let ((.cse63 (select .cse68 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse65 (store .cse67 .cse9 (+ .cse63 2 .cse62)))) (let ((.cse66 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| .cse65) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse63 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse65 .cse5 (+ .cse63 .cse66 .cse62 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse66 .cse62)))) 10))))))) .cse28))) .cse17)))) .cse42)))))) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select .cse12 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= c_~N~0 2147483647) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from true [2022-11-16 12:30:20,268 WARN L233 SmtUtils]: Spent 3.02m on a formula simplification. DAG size of input: 260 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)