./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifcomp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ifcomp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d2a65255d8b2e6b68882339bb2639d8ae744f5b340e0d3d33c067476b0c9dc7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:43:55,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:43:55,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:43:55,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:43:55,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:43:55,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:43:55,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:43:55,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:43:55,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:43:55,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:43:55,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:43:55,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:43:55,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:43:55,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:43:55,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:43:55,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:43:55,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:43:55,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:43:55,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:43:55,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:43:55,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:43:55,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:43:55,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:43:55,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:43:55,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:43:55,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:43:55,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:43:55,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:43:55,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:43:55,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:43:55,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:43:55,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:43:55,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:43:55,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:43:56,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:43:56,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:43:56,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:43:56,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:43:56,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:43:56,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:43:56,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:43:56,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:43:56,035 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:43:56,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:43:56,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:43:56,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:43:56,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:43:56,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:43:56,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:43:56,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:43:56,039 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:43:56,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:43:56,040 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:43:56,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:43:56,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:43:56,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:43:56,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:43:56,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:43:56,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:43:56,043 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:43:56,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:43:56,044 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:43:56,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:43:56,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:43:56,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:43:56,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:43:56,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:43:56,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:43:56,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:43:56,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:43:56,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:43:56,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:43:56,048 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:43:56,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:43:56,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:43:56,049 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_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d2a65255d8b2e6b68882339bb2639d8ae744f5b340e0d3d33c067476b0c9dc7 [2022-11-20 11:43:56,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:43:56,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:43:56,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:43:56,442 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:43:56,443 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:43:56,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-fpi/ifcomp.c [2022-11-20 11:44:00,241 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:44:00,644 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:44:00,644 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/sv-benchmarks/c/array-fpi/ifcomp.c [2022-11-20 11:44:00,652 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/data/e18f46dd7/1b79b7d13d6845a4851c8e63b4f3b005/FLAG2c26925c0 [2022-11-20 11:44:00,669 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/data/e18f46dd7/1b79b7d13d6845a4851c8e63b4f3b005 [2022-11-20 11:44:00,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:44:00,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:44:00,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:44:00,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:44:00,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:44:00,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:44:00" (1/1) ... [2022-11-20 11:44:00,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c2d2c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:00, skipping insertion in model container [2022-11-20 11:44:00,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:44:00" (1/1) ... [2022-11-20 11:44:00,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:44:00,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:44:00,896 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/sv-benchmarks/c/array-fpi/ifcomp.c[589,602] [2022-11-20 11:44:00,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:44:00,948 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:44:00,963 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/sv-benchmarks/c/array-fpi/ifcomp.c[589,602] [2022-11-20 11:44:00,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:44:01,010 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:44:01,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01 WrapperNode [2022-11-20 11:44:01,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:44:01,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:44:01,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:44:01,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:44:01,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (1/1) ... [2022-11-20 11:44:01,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (1/1) ... [2022-11-20 11:44:01,069 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2022-11-20 11:44:01,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:44:01,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:44:01,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:44:01,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:44:01,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (1/1) ... [2022-11-20 11:44:01,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (1/1) ... [2022-11-20 11:44:01,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (1/1) ... [2022-11-20 11:44:01,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (1/1) ... [2022-11-20 11:44:01,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (1/1) ... [2022-11-20 11:44:01,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (1/1) ... [2022-11-20 11:44:01,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (1/1) ... [2022-11-20 11:44:01,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (1/1) ... [2022-11-20 11:44:01,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:44:01,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:44:01,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:44:01,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:44:01,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (1/1) ... [2022-11-20 11:44:01,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:44:01,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:01,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:44:01,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:44:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:44:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:44:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:44:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:44:01,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:44:01,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:44:01,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:44:01,313 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:44:01,316 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:44:01,605 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:44:01,613 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:44:01,613 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:44:01,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:44:01 BoogieIcfgContainer [2022-11-20 11:44:01,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:44:01,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:44:01,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:44:01,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:44:01,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:44:00" (1/3) ... [2022-11-20 11:44:01,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7ac000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:44:01, skipping insertion in model container [2022-11-20 11:44:01,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:44:01" (2/3) ... [2022-11-20 11:44:01,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7ac000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:44:01, skipping insertion in model container [2022-11-20 11:44:01,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:44:01" (3/3) ... [2022-11-20 11:44:01,629 INFO L112 eAbstractionObserver]: Analyzing ICFG ifcomp.c [2022-11-20 11:44:01,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:44:01,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:44:01,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:44:01,793 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;@38cbce80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:44:01,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:44:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:44:01,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:01,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:01,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:01,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1152450264, now seen corresponding path program 1 times [2022-11-20 11:44:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:01,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263042604] [2022-11-20 11:44:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:01,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:02,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263042604] [2022-11-20 11:44:02,038 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:44:02,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849749558] [2022-11-20 11:44:02,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:02,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:02,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:02,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:02,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:44:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:44:02,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:02,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:02,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849749558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:02,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:02,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:44:02,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117777321] [2022-11-20 11:44:02,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:02,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:44:02,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:02,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:44:02,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:44:02,287 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2022-11-20 11:44:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:02,306 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2022-11-20 11:44:02,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:44:02,309 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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 [2022-11-20 11:44:02,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:02,319 INFO L225 Difference]: With dead ends: 50 [2022-11-20 11:44:02,320 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 11:44:02,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:44:02,328 INFO L413 NwaCegarLoop]: 34 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, 34 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 [2022-11-20 11:44:02,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:44:02,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 11:44:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 11:44:02,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-11-20 11:44:02,387 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 14 [2022-11-20 11:44:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:02,388 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-11-20 11:44:02,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 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) [2022-11-20 11:44:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-11-20 11:44:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:44:02,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:02,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:02,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:44:02,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:02,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:02,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash 670750212, now seen corresponding path program 1 times [2022-11-20 11:44:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:02,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061879175] [2022-11-20 11:44:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:02,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061879175] [2022-11-20 11:44:02,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:44:02,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854415465] [2022-11-20 11:44:02,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:02,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:02,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:02,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:02,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:44:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:44:02,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:02,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:02,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:02,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854415465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:02,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:02,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:44:02,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147498766] [2022-11-20 11:44:02,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:02,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:44:02,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:02,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:44:02,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:44:02,902 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-20 11:44:03,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:03,076 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2022-11-20 11:44:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:44:03,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 [2022-11-20 11:44:03,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:03,079 INFO L225 Difference]: With dead ends: 53 [2022-11-20 11:44:03,079 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 11:44:03,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:44:03,082 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 57 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:03,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 16 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:44:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 11:44:03,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2022-11-20 11:44:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-20 11:44:03,092 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2022-11-20 11:44:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:03,093 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-20 11:44:03,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-20 11:44:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-20 11:44:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:44:03,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:03,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:03,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:03,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:03,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:03,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash -203130337, now seen corresponding path program 1 times [2022-11-20 11:44:03,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:03,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995166982] [2022-11-20 11:44:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:03,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:03,352 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:44:03,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925491935] [2022-11-20 11:44:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:03,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:03,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:03,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:03,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:44:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:03,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:44:03,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:44:03,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:03,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:03,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995166982] [2022-11-20 11:44:03,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:44:03,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925491935] [2022-11-20 11:44:03,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925491935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:03,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:03,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:44:03,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107898031] [2022-11-20 11:44:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:03,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:44:03,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:44:03,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:44:03,614 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2022-11-20 11:44:03,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:03,734 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2022-11-20 11:44:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:44:03,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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 23 [2022-11-20 11:44:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:03,737 INFO L225 Difference]: With dead ends: 58 [2022-11-20 11:44:03,738 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 11:44:03,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:44:03,742 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:03,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 25 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:44:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 11:44:03,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2022-11-20 11:44:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 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) [2022-11-20 11:44:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-20 11:44:03,750 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2022-11-20 11:44:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:03,750 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-20 11:44:03,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2022-11-20 11:44:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-20 11:44:03,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:44:03,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:03,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:03,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:03,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:03,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:03,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1978137699, now seen corresponding path program 1 times [2022-11-20 11:44:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:03,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912084006] [2022-11-20 11:44:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:03,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:04,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:44:04,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296322400] [2022-11-20 11:44:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:04,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:04,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:04,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:04,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:44:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:04,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:44:04,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:04,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:44:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:44:04,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:44:04,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:04,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912084006] [2022-11-20 11:44:04,320 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:44:04,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296322400] [2022-11-20 11:44:04,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296322400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:04,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:04,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:44:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235901290] [2022-11-20 11:44:04,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:04,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:44:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:04,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:44:04,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:44:04,324 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2022-11-20 11:44:04,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:04,462 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2022-11-20 11:44:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:44:04,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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 23 [2022-11-20 11:44:04,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:04,464 INFO L225 Difference]: With dead ends: 46 [2022-11-20 11:44:04,464 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 11:44:04,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:44:04,473 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 53 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:04,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 77 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:44:04,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 11:44:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2022-11-20 11:44:04,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-11-20 11:44:04,496 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 23 [2022-11-20 11:44:04,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:04,497 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-11-20 11:44:04,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2022-11-20 11:44:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-11-20 11:44:04,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 11:44:04,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:04,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:04,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:04,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:04,704 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:04,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:04,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1659346963, now seen corresponding path program 1 times [2022-11-20 11:44:04,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:04,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065339779] [2022-11-20 11:44:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:04,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:04,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:44:04,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580801489] [2022-11-20 11:44:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:04,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:04,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:04,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:04,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:44:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:04,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:44:04,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:44:04,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:44:05,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:05,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065339779] [2022-11-20 11:44:05,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:44:05,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580801489] [2022-11-20 11:44:05,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580801489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:05,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:05,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-20 11:44:05,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140409538] [2022-11-20 11:44:05,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:05,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:44:05,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:05,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:44:05,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:44:05,085 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:05,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:05,370 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2022-11-20 11:44:05,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:44:05,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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) Word has length 26 [2022-11-20 11:44:05,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:05,372 INFO L225 Difference]: With dead ends: 92 [2022-11-20 11:44:05,373 INFO L226 Difference]: Without dead ends: 53 [2022-11-20 11:44:05,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:44:05,376 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 62 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:05,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 41 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:44:05,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-20 11:44:05,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 35. [2022-11-20 11:44:05,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-20 11:44:05,392 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 26 [2022-11-20 11:44:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:05,393 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-20 11:44:05,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-20 11:44:05,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 11:44:05,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:05,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:05,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:05,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:05,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:05,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:05,605 INFO L85 PathProgramCache]: Analyzing trace with hash -643446870, now seen corresponding path program 1 times [2022-11-20 11:44:05,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:05,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380029953] [2022-11-20 11:44:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:05,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:05,652 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:44:05,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542298158] [2022-11-20 11:44:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:05,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:05,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:05,655 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:05,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:44:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:05,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 11:44:05,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:05,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:44:06,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:06,077 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 [2022-11-20 11:44:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:44:06,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:06,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-20 11:44:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:44:06,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:06,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380029953] [2022-11-20 11:44:06,631 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:44:06,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542298158] [2022-11-20 11:44:06,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542298158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:06,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:06,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-11-20 11:44:06,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287433300] [2022-11-20 11:44:06,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:06,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:44:06,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:06,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:44:06,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:44:06,634 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:07,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:07,627 INFO L93 Difference]: Finished difference Result 138 states and 170 transitions. [2022-11-20 11:44:07,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 11:44:07,628 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-20 11:44:07,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:07,630 INFO L225 Difference]: With dead ends: 138 [2022-11-20 11:44:07,630 INFO L226 Difference]: Without dead ends: 110 [2022-11-20 11:44:07,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:44:07,631 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 205 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:07,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 88 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 193 Invalid, 0 Unknown, 57 Unchecked, 0.4s Time] [2022-11-20 11:44:07,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-20 11:44:07,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 59. [2022-11-20 11:44:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 58 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) [2022-11-20 11:44:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2022-11-20 11:44:07,663 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 32 [2022-11-20 11:44:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:07,665 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2022-11-20 11:44:07,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:07,667 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2022-11-20 11:44:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 11:44:07,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:07,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:07,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:07,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:07,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:07,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2051071008, now seen corresponding path program 1 times [2022-11-20 11:44:07,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:07,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276498418] [2022-11-20 11:44:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:07,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:07,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:44:07,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183565408] [2022-11-20 11:44:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:07,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:07,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:07,919 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:07,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:44:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:08,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-20 11:44:08,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:08,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2022-11-20 11:44:08,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:44:08,361 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 [2022-11-20 11:44:08,423 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 19 treesize of output 18 [2022-11-20 11:44:08,520 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 32 [2022-11-20 11:44:08,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:44:08,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 26 [2022-11-20 11:44:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:08,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:12,036 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~c~0#1.offset| Int)) (= (select (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |ULTIMATE.start_main_~c~0#1.offset| 0))) (store .cse0 (+ |ULTIMATE.start_main_~c~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) (let ((.cse1 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base| .cse0) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse0 (+ |ULTIMATE.start_main_~c~0#1.offset| .cse1)))))) (+ |ULTIMATE.start_main_~c~0#1.offset| 8)) 1)) is different from false [2022-11-20 11:44:12,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-11-20 11:44:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-20 11:44:12,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:12,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276498418] [2022-11-20 11:44:12,619 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:44:12,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183565408] [2022-11-20 11:44:12,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183565408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:12,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:12,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 26 [2022-11-20 11:44:12,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073075553] [2022-11-20 11:44:12,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:12,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 11:44:12,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:12,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 11:44:12,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=482, Unknown=1, NotChecked=46, Total=650 [2022-11-20 11:44:12,622 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:14,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:14,347 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2022-11-20 11:44:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:44:14,351 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-20 11:44:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:14,354 INFO L225 Difference]: With dead ends: 116 [2022-11-20 11:44:14,354 INFO L226 Difference]: Without dead ends: 114 [2022-11-20 11:44:14,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=207, Invalid=852, Unknown=1, NotChecked=62, Total=1122 [2022-11-20 11:44:14,355 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 96 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:14,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 94 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 282 Invalid, 0 Unknown, 88 Unchecked, 0.5s Time] [2022-11-20 11:44:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-20 11:44:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 93. [2022-11-20 11:44:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 92 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2022-11-20 11:44:14,410 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 36 [2022-11-20 11:44:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:14,411 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2022-11-20 11:44:14,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2022-11-20 11:44:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:44:14,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:14,418 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:14,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:14,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:44:14,626 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:14,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:14,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1866238698, now seen corresponding path program 2 times [2022-11-20 11:44:14,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:14,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890017192] [2022-11-20 11:44:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:14,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:14,688 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:44:14,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576833745] [2022-11-20 11:44:14,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:44:14,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:14,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:14,697 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:14,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:44:14,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:44:14,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:44:14,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:44:14,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:44:15,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:44:15,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:15,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890017192] [2022-11-20 11:44:15,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:44:15,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576833745] [2022-11-20 11:44:15,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576833745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:15,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:15,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-20 11:44:15,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129315942] [2022-11-20 11:44:15,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:15,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:44:15,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:44:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:44:15,175 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:15,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:15,571 INFO L93 Difference]: Finished difference Result 258 states and 320 transitions. [2022-11-20 11:44:15,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:44:15,572 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-20 11:44:15,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:15,574 INFO L225 Difference]: With dead ends: 258 [2022-11-20 11:44:15,574 INFO L226 Difference]: Without dead ends: 153 [2022-11-20 11:44:15,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:44:15,576 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 115 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:15,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 68 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:44:15,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-20 11:44:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2022-11-20 11:44:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2436974789915967) internal successors, (148), 119 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:15,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 148 transitions. [2022-11-20 11:44:15,608 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 148 transitions. Word has length 40 [2022-11-20 11:44:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:15,608 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 148 transitions. [2022-11-20 11:44:15,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 148 transitions. [2022-11-20 11:44:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 11:44:15,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:15,610 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:15,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:15,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 11:44:15,817 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:15,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:15,818 INFO L85 PathProgramCache]: Analyzing trace with hash 383833277, now seen corresponding path program 2 times [2022-11-20 11:44:15,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:15,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070738200] [2022-11-20 11:44:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:15,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:15,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:44:15,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431405383] [2022-11-20 11:44:15,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:44:15,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:15,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:15,897 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:15,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:44:16,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:44:16,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:44:16,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:44:16,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:44:16,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:44:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:44:16,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:16,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070738200] [2022-11-20 11:44:16,405 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:44:16,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431405383] [2022-11-20 11:44:16,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431405383] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:44:16,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:16,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-20 11:44:16,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305186379] [2022-11-20 11:44:16,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:16,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:44:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:16,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:44:16,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:44:16,407 INFO L87 Difference]: Start difference. First operand 120 states and 148 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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) [2022-11-20 11:44:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:17,096 INFO L93 Difference]: Finished difference Result 332 states and 403 transitions. [2022-11-20 11:44:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:44:17,097 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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 47 [2022-11-20 11:44:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:17,098 INFO L225 Difference]: With dead ends: 332 [2022-11-20 11:44:17,099 INFO L226 Difference]: Without dead ends: 227 [2022-11-20 11:44:17,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:44:17,105 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 219 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:17,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 107 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:44:17,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-20 11:44:17,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 173. [2022-11-20 11:44:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.2267441860465116) internal successors, (211), 172 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:17,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 211 transitions. [2022-11-20 11:44:17,148 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 211 transitions. Word has length 47 [2022-11-20 11:44:17,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:17,150 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 211 transitions. [2022-11-20 11:44:17,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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) [2022-11-20 11:44:17,151 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 211 transitions. [2022-11-20 11:44:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 11:44:17,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:17,154 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:17,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:17,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 11:44:17,361 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:17,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:17,361 INFO L85 PathProgramCache]: Analyzing trace with hash 132233513, now seen corresponding path program 3 times [2022-11-20 11:44:17,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:17,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880945118] [2022-11-20 11:44:17,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:17,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:17,398 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:44:17,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080497416] [2022-11-20 11:44:17,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:44:17,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:17,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:44:17,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:44:17,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ee828bb-6fba-44ae-93e0-7964890f4717/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:44:18,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:44:18,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:44:18,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-20 11:44:18,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:44:18,544 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:44:18,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-11-20 11:44:18,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:44:18,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-20 11:44:18,875 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 11:44:18,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 49 treesize of output 95 [2022-11-20 11:44:18,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:18,974 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-11-20 11:44:18,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 32 [2022-11-20 11:44:19,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 60 [2022-11-20 11:44:19,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:19,435 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-20 11:44:19,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 105 [2022-11-20 11:44:19,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:19,519 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-11-20 11:44:19,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 42 [2022-11-20 11:44:20,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-11-20 11:44:20,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 150 [2022-11-20 11:44:20,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:44:20,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:20,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:20,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:20,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:20,960 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 120 treesize of output 194 [2022-11-20 11:44:21,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:21,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:21,054 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 160 treesize of output 98 [2022-11-20 11:44:21,958 INFO L321 Elim1Store]: treesize reduction 54, result has 49.1 percent of original size [2022-11-20 11:44:21,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 155 treesize of output 185 [2022-11-20 11:44:22,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:22,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:22,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:22,818 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 33 treesize of output 42 [2022-11-20 11:44:22,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:22,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:22,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:22,857 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 33 treesize of output 42 [2022-11-20 11:44:23,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:23,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:23,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:23,097 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 33 treesize of output 42 [2022-11-20 11:44:24,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:24,157 INFO L321 Elim1Store]: treesize reduction 60, result has 49.2 percent of original size [2022-11-20 11:44:24,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 117 treesize of output 148 [2022-11-20 11:44:26,428 INFO L321 Elim1Store]: treesize reduction 100, result has 36.3 percent of original size [2022-11-20 11:44:26,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 236 treesize of output 261 [2022-11-20 11:44:28,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,309 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 11:44:28,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 154 [2022-11-20 11:44:28,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,411 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 11:44:28,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 46 [2022-11-20 11:44:28,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,497 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 11:44:28,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 154 [2022-11-20 11:44:28,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,579 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 11:44:28,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 55 [2022-11-20 11:44:28,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,763 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 11:44:28,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 154 [2022-11-20 11:44:28,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:28,879 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 119 treesize of output 60 [2022-11-20 11:44:29,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,148 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2022-11-20 11:44:29,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 153 [2022-11-20 11:44:29,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,215 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 102 treesize of output 44 [2022-11-20 11:44:29,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,574 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2022-11-20 11:44:29,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 153 [2022-11-20 11:44:29,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,663 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 140 treesize of output 60 [2022-11-20 11:44:29,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,774 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2022-11-20 11:44:29,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 153 [2022-11-20 11:44:29,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:44:29,844 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 134 treesize of output 74 [2022-11-20 11:44:44,106 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 346 DAG size of output: 98 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 11:44:44,107 INFO L321 Elim1Store]: treesize reduction 562, result has 23.8 percent of original size [2022-11-20 11:44:44,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 77 case distinctions, treesize of input 1261 treesize of output 1279 [2022-11-20 11:50:56,476 WARN L233 SmtUtils]: Spent 22.45s on a formula simplification. DAG size of input: 593 DAG size of output: 593 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:51:15,784 WARN L233 SmtUtils]: Spent 10.32s on a formula simplification that was a NOOP. DAG size: 587 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:51:25,031 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 885 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 11:57:44,554 WARN L233 SmtUtils]: Spent 1.06m on a formula simplification that was a NOOP. DAG size: 1132 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)