./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ss4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb671fec0d42514b04873418e954f5a2df95ef7f393045434a478c03667a31d2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:13:01,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:13:01,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:13:01,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:13:01,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:13:01,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:13:01,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:13:01,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:13:01,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:13:01,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:13:01,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:13:01,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:13:01,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:13:01,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:13:01,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:13:01,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:13:01,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:13:01,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:13:01,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:13:01,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:13:01,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:13:01,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:13:01,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:13:01,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:13:01,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:13:01,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:13:01,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:13:01,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:13:01,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:13:01,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:13:01,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:13:01,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:13:01,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:13:01,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:13:01,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:13:01,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:13:01,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:13:01,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:13:01,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:13:01,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:13:01,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:13:01,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:13:01,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:13:01,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:13:01,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:13:01,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:13:01,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:13:01,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:13:01,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:13:01,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:13:01,957 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:13:01,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:13:01,959 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:13:01,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:13:01,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:13:01,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:13:01,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:13:01,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:13:01,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:13:01,961 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:13:01,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:13:01,961 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:13:01,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:13:01,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:13:01,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:13:01,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:13:01,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:01,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:13:01,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:13:01,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:13:01,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:13:01,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:13:01,966 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:13:01,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:13:01,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:13:01,967 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_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb671fec0d42514b04873418e954f5a2df95ef7f393045434a478c03667a31d2 [2022-11-16 12:13:02,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:13:02,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:13:02,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:13:02,373 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:13:02,374 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:13:02,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/array-fpi/ss4.c [2022-11-16 12:13:02,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/data/a342dbadf/27eedfcddd36427a94c9417504894b04/FLAG3b9898082 [2022-11-16 12:13:02,933 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:13:02,936 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/sv-benchmarks/c/array-fpi/ss4.c [2022-11-16 12:13:02,943 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/data/a342dbadf/27eedfcddd36427a94c9417504894b04/FLAG3b9898082 [2022-11-16 12:13:03,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/data/a342dbadf/27eedfcddd36427a94c9417504894b04 [2022-11-16 12:13:03,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:13:03,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:13:03,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:03,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:13:03,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:13:03,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c09d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03, skipping insertion in model container [2022-11-16 12:13:03,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:13:03,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:13:03,651 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/sv-benchmarks/c/array-fpi/ss4.c[586,599] [2022-11-16 12:13:03,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:03,698 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:13:03,715 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/sv-benchmarks/c/array-fpi/ss4.c[586,599] [2022-11-16 12:13:03,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:13:03,760 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:13:03,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03 WrapperNode [2022-11-16 12:13:03,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:13:03,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:03,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:13:03,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:13:03,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,822 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2022-11-16 12:13:03,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:13:03,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:13:03,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:13:03,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:13:03,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,875 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:13:03,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:13:03,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:13:03,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:13:03,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (1/1) ... [2022-11-16 12:13:03,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:13:03,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:03,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:13:03,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:13:03,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:13:03,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:13:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:13:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:13:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:13:03,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:13:03,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:13:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:13:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:13:04,057 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:13:04,059 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:13:04,245 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:13:04,251 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:13:04,252 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:13:04,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:04 BoogieIcfgContainer [2022-11-16 12:13:04,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:13:04,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:13:04,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:13:04,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:13:04,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:13:03" (1/3) ... [2022-11-16 12:13:04,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f1dc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:04, skipping insertion in model container [2022-11-16 12:13:04,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:03" (2/3) ... [2022-11-16 12:13:04,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f1dc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:04, skipping insertion in model container [2022-11-16 12:13:04,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:04" (3/3) ... [2022-11-16 12:13:04,263 INFO L112 eAbstractionObserver]: Analyzing ICFG ss4.c [2022-11-16 12:13:04,284 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:13:04,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:13:04,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:13:04,345 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;@11a5503e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:13:04,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:13:04,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:13:04,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:04,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:04,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:04,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2022-11-16 12:13:04,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:04,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606717425] [2022-11-16 12:13:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:04,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:04,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:04,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606717425] [2022-11-16 12:13:04,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:13:04,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272844893] [2022-11-16 12:13:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:04,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:04,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:04,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:04,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:13:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:04,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:13:04,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:04,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:04,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272844893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:04,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:04,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:13:04,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482383014] [2022-11-16 12:13:04,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:04,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:13:04,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:04,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:13:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:13:04,851 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:04,868 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-11-16 12:13:04,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:13:04,870 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2022-11-16 12:13:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:04,879 INFO L225 Difference]: With dead ends: 44 [2022-11-16 12:13:04,879 INFO L226 Difference]: Without dead ends: 20 [2022-11-16 12:13:04,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:13:04,885 INFO L413 NwaCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:04,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:13:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-16 12:13:04,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-16 12:13:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-16 12:13:04,920 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2022-11-16 12:13:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:04,920 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-16 12:13:04,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:04,921 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-16 12:13:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:13:04,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:04,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:04,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:05,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:05,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:05,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:05,129 INFO L85 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2022-11-16 12:13:05,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:05,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865628912] [2022-11-16 12:13:05,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:05,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:05,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:05,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865628912] [2022-11-16 12:13:05,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:13:05,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294344862] [2022-11-16 12:13:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:05,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:05,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:05,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:05,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:13:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:05,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:13:05,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:05,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:13:05,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294344862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:13:05,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:13:05,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:13:05,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975590011] [2022-11-16 12:13:05,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:13:05,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:13:05,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:05,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:13:05,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:13:05,413 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:05,483 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-11-16 12:13:05,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:13:05,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-11-16 12:13:05,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:05,484 INFO L225 Difference]: With dead ends: 41 [2022-11-16 12:13:05,484 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 12:13:05,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:13:05,486 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:05,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 12 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:13:05,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 12:13:05,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-11-16 12:13:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-16 12:13:05,495 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2022-11-16 12:13:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:05,495 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-16 12:13:05,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:05,496 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-16 12:13:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 12:13:05,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:05,497 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] [2022-11-16 12:13:05,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:05,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:05,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:05,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:05,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2022-11-16 12:13:05,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:05,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014405523] [2022-11-16 12:13:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:05,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:05,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:13:05,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481326970] [2022-11-16 12:13:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:05,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:05,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:05,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:05,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:13:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:13:05,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-16 12:13:05,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:06,059 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 [2022-11-16 12:13:06,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:13:06,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:13:06,372 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 36 treesize of output 23 [2022-11-16 12:13:06,518 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 36 treesize of output 23 [2022-11-16 12:13:06,634 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 32 treesize of output 23 [2022-11-16 12:13:06,698 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 36 treesize of output 23 [2022-11-16 12:13:06,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 31 [2022-11-16 12:13:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:06,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:07,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:07,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:07,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014405523] [2022-11-16 12:13:07,920 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:13:07,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481326970] [2022-11-16 12:13:07,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481326970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:07,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:13:07,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-16 12:13:07,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282753346] [2022-11-16 12:13:07,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:07,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:13:07,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:07,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:13:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:13:07,930 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 28 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:10,059 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-11-16 12:13:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:13:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-16 12:13:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:10,060 INFO L225 Difference]: With dead ends: 45 [2022-11-16 12:13:10,061 INFO L226 Difference]: Without dead ends: 41 [2022-11-16 12:13:10,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=301, Invalid=1421, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 12:13:10,062 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 64 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:10,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 47 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 263 Invalid, 0 Unknown, 4 Unchecked, 0.8s Time] [2022-11-16 12:13:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-16 12:13:10,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2022-11-16 12:13:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-11-16 12:13:10,074 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 23 [2022-11-16 12:13:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:10,074 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-11-16 12:13:10,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-11-16 12:13:10,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 12:13:10,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:10,076 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] [2022-11-16 12:13:10,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:10,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:10,282 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:10,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1774307726, now seen corresponding path program 2 times [2022-11-16 12:13:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:10,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675397874] [2022-11-16 12:13:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:10,341 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:13:10,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746533312] [2022-11-16 12:13:10,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:13:10,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:10,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:10,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:10,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:13:10,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:13:10,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:13:10,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:13:10,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:13:10,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:13:10,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:10,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675397874] [2022-11-16 12:13:10,557 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:13:10,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746533312] [2022-11-16 12:13:10,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746533312] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:10,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:13:10,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-16 12:13:10,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541955998] [2022-11-16 12:13:10,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:10,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:13:10,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:10,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:13:10,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:13:10,563 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:10,728 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2022-11-16 12:13:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:10,735 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 12:13:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:10,735 INFO L225 Difference]: With dead ends: 79 [2022-11-16 12:13:10,736 INFO L226 Difference]: Without dead ends: 53 [2022-11-16 12:13:10,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:13:10,737 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 76 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:10,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 26 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:13:10,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-16 12:13:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 38. [2022-11-16 12:13:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2022-11-16 12:13:10,759 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2022-11-16 12:13:10,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:10,760 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2022-11-16 12:13:10,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:10,760 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2022-11-16 12:13:10,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 12:13:10,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:10,762 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] [2022-11-16 12:13:10,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:10,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:10,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:10,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:10,969 INFO L85 PathProgramCache]: Analyzing trace with hash 119582130, now seen corresponding path program 3 times [2022-11-16 12:13:10,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:10,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096248731] [2022-11-16 12:13:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:10,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:10,997 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:13:11,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294816311] [2022-11-16 12:13:11,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:13:11,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:11,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:11,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:11,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:13:11,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:13:11,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:13:11,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:13:11,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:13:11,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:13:11,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:11,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096248731] [2022-11-16 12:13:11,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:13:11,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294816311] [2022-11-16 12:13:11,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294816311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:11,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:13:11,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-16 12:13:11,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068453621] [2022-11-16 12:13:11,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:11,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:13:11,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:11,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:13:11,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:13:11,226 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:11,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:13:11,373 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2022-11-16 12:13:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:13:11,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 12:13:11,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:13:11,376 INFO L225 Difference]: With dead ends: 47 [2022-11-16 12:13:11,376 INFO L226 Difference]: Without dead ends: 35 [2022-11-16 12:13:11,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:13:11,382 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:13:11,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 23 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:13:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-16 12:13:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-11-16 12:13:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:11,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-11-16 12:13:11,404 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 25 [2022-11-16 12:13:11,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:13:11,404 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-11-16 12:13:11,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:13:11,405 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-11-16 12:13:11,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 12:13:11,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:13:11,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:13:11,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:13:11,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:11,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:13:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:13:11,612 INFO L85 PathProgramCache]: Analyzing trace with hash 666081912, now seen corresponding path program 4 times [2022-11-16 12:13:11,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:13:11,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845643844] [2022-11-16 12:13:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:13:11,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:13:11,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:13:11,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42866020] [2022-11-16 12:13:11,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:13:11,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:13:11,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:13:11,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:13:11,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:13:11,778 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:13:11,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:13:11,781 WARN L261 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-16 12:13:11,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:13:11,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:13:11,808 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 [2022-11-16 12:13:11,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:13:11,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:11,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:11,911 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:13:11,912 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 1 case distinctions, treesize of input 35 treesize of output 37 [2022-11-16 12:13:12,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:12,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:12,171 INFO L321 Elim1Store]: treesize reduction 63, result has 19.2 percent of original size [2022-11-16 12:13:12,173 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 8 case distinctions, treesize of input 49 treesize of output 42 [2022-11-16 12:13:12,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:12,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:12,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:12,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2022-11-16 12:13:12,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:12,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:12,656 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2022-11-16 12:13:12,657 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 7 case distinctions, treesize of input 61 treesize of output 53 [2022-11-16 12:13:12,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:12,832 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 12:13:12,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 39 [2022-11-16 12:13:12,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:13,017 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-16 12:13:13,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 39 [2022-11-16 12:13:13,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:13:13,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:13:13,150 INFO L321 Elim1Store]: treesize reduction 63, result has 19.2 percent of original size [2022-11-16 12:13:13,155 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 8 case distinctions, treesize of input 57 treesize of output 46 [2022-11-16 12:13:13,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2022-11-16 12:13:13,462 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:13:13,463 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 3 case distinctions, treesize of input 54 treesize of output 38 [2022-11-16 12:13:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:13,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:13:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:13:26,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:13:26,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845643844] [2022-11-16 12:13:26,619 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:13:26,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42866020] [2022-11-16 12:13:26,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42866020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:13:26,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:13:26,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2022-11-16 12:13:26,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667327812] [2022-11-16 12:13:26,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:13:26,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-16 12:13:26,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:13:26,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-16 12:13:26,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1657, Unknown=1, NotChecked=0, Total=1892 [2022-11-16 12:13:26,622 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 44 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:13,061 WARN L233 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:15:25,065 WARN L233 SmtUtils]: Spent 29.01s on a formula simplification that was a NOOP. DAG size: 164 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:15:39,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:15:43,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:15:48,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:16:48,593 WARN L233 SmtUtils]: Spent 22.55s on a formula simplification that was a NOOP. DAG size: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:17:13,942 WARN L233 SmtUtils]: Spent 9.58s on a formula simplification that was a NOOP. DAG size: 130 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:17:16,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:17:18,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:17:37,358 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification that was a NOOP. DAG size: 131 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:17:55,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:18:18,054 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse81 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse22 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse79 (+ .cse81 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse30 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse21 (select .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse41 (select .cse22 .cse79))) (let ((.cse80 (+ .cse21 .cse41))) (let ((.cse16 (+ .cse81 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse71 (store .cse22 .cse79 .cse80)) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse34 (< .cse1 c_~N~0)) (.cse38 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse80))) (.cse0 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse71)) (.cse29 (select .cse22 .cse16))) (let ((.cse31 (+ .cse21 .cse29)) (.cse15 (store .cse22 .cse79 1)) (.cse20 (select .cse19 |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse32 (< .cse0 c_~N~0)) (.cse17 (+ c_~N~0 (* c_~N~0 c_~N~0))) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse40 (select .cse38 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse33 (not .cse34))) (and (<= c_~N~0 2) (forall ((~N~0 Int)) (or (< .cse0 ~N~0) (not (< .cse1 ~N~0)) (= (let ((.cse3 (let ((.cse14 (store .cse15 .cse16 1))) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14))) (let ((.cse13 (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse9 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse10 (select .cse14 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse11 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (let ((.cse6 (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse10 .cse11))))) (store .cse6 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse8 (select .cse6 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse7 (store .cse8 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse9 .cse10 .cse11 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (store .cse7 .cse5 (+ (select (select (store .cse6 |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse8 .cse5)))))))))))))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) (+ ~N~0 (* ~N~0 ~N~0))) (not (< 1 ~N~0)) (< 2 ~N~0))) (= .cse17 (let ((.cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse18)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))) (= |c_ULTIMATE.start_main_~#sum~0#1.offset| 0) (= (* .cse21 2) (+ (select .cse22 .cse5) 1)) (or (= .cse17 (let ((.cse23 (let ((.cse26 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse31)))) (store .cse26 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse28 (select .cse26 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse27 (store .cse28 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse21 .cse29 (select .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (store .cse27 .cse5 (+ (select (select (store .cse26 |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse28 .cse5))))))))) (let ((.cse24 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse25 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse25)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse25))))) .cse32 .cse33) (= .cse21 2) (< 1 c_~N~0) (or .cse34 (= (let ((.cse35 (store .cse38 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse39 (store .cse40 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse21 .cse41 (select .cse40 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (store .cse39 .cse5 (+ (select .cse40 .cse5) (select (select (store .cse38 |c_ULTIMATE.start_main_~a~0#1.base| .cse39) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse36 (select .cse35 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse37 (select (select (store .cse35 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse36 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse35 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse36 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse37)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse37)))) .cse17) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) (= .cse17 (let ((.cse42 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse22 .cse16 .cse31)))) (let ((.cse43 (select .cse42 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse44 (select (select (store .cse42 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse43 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse42 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse43 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse44)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse44))))) (forall ((~N~0 Int)) (or (= (let ((.cse45 (let ((.cse54 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse15))) (let ((.cse55 (select .cse54 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse51 (select .cse55 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse53 (select .cse15 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse52 (select (select (store .cse54 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse55 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse51 .cse53))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (let ((.cse48 (store .cse54 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse55 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse51 .cse52 .cse53))))) (store .cse48 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse50 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse49 (store .cse50 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse51 (select .cse50 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse52 .cse53)))) (store .cse49 .cse5 (+ (select .cse50 .cse5) (select (select (store .cse48 |c_ULTIMATE.start_main_~a~0#1.base| .cse49) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))))))))) (let ((.cse46 (select .cse45 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse47 (select (select (store .cse45 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse46 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse45 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse46 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse47)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse47)))) (+ ~N~0 (* ~N~0 ~N~0))) (not (< 1 ~N~0)) (< .cse1 ~N~0) (< 2 ~N~0) (not (< |c_ULTIMATE.start_main_~i~0#1| ~N~0)))) (forall ((~N~0 Int)) (or (< .cse0 ~N~0) (not (< .cse1 ~N~0)) (= (let ((.cse57 (let ((.cse67 (store .cse22 .cse16 1))) (let ((.cse65 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse67))) (let ((.cse66 (select .cse65 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse62 (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse64 (select .cse66 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse63 (select (select (store .cse65 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse66 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse62 .cse64))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (let ((.cse59 (store .cse65 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse66 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse62 .cse63 .cse64))))) (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse61 (select .cse59 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse60 (store .cse61 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse61 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse62 .cse63 .cse64)))) (store .cse60 .cse5 (+ (select (select (store .cse59 |c_ULTIMATE.start_main_~a~0#1.base| .cse60) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse61 .cse5)))))))))))))) (let ((.cse58 (select .cse57 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse56 (select (select (store .cse57 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse58 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse56 (select (select (store .cse57 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse58 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse56)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) (+ ~N~0 (* ~N~0 ~N~0))) (not (< 1 ~N~0)) (< 2 ~N~0))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (+ .cse21 1) (select .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|)) (= .cse17 (let ((.cse68 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse71 .cse16 (+ .cse29 (select .cse20 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse69 (select .cse68 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse70 (select (select (store .cse68 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse69 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse68 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse69 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse70)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse70))))) (or .cse32 (= .cse17 (let ((.cse73 (let ((.cse78 (select .cse40 .cse16))) (let ((.cse75 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse21 .cse41 .cse78))))) (store .cse75 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse77 (select .cse75 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse76 (store .cse77 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse21 .cse41 (select .cse77 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse78)))) (store .cse76 .cse5 (+ (select (select (store .cse75 |c_ULTIMATE.start_main_~a~0#1.base| .cse76) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse77 .cse5)))))))))) (let ((.cse74 (select .cse73 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse72 (select (select (store .cse73 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse74 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse72 (select (select (store .cse73 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse74 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse72)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))))) .cse33))))))))) is different from true [2022-11-16 12:18:59,800 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:19:04,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:19:41,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:19:44,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:19:47,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:19:52,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:19:54,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:19:56,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:19:58,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:20:00,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:20:01,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:20:03,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:20:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:10,124 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2022-11-16 12:20:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-16 12:20:10,125 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-16 12:20:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:10,128 INFO L225 Difference]: With dead ends: 99 [2022-11-16 12:20:10,129 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 12:20:10,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 343.9s TimeCoverageRelationStatistics Valid=650, Invalid=5050, Unknown=4, NotChecked=148, Total=5852 [2022-11-16 12:20:10,133 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 203 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 72.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:10,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 106 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 764 Invalid, 9 Unknown, 180 Unchecked, 72.3s Time] [2022-11-16 12:20:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 12:20:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2022-11-16 12:20:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 66 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2022-11-16 12:20:10,168 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 31 [2022-11-16 12:20:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:10,169 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2022-11-16 12:20:10,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2022-11-16 12:20:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:20:10,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:10,171 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:20:10,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 12:20:10,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:10,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:10,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:10,380 INFO L85 PathProgramCache]: Analyzing trace with hash 207824378, now seen corresponding path program 5 times [2022-11-16 12:20:10,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:10,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927053241] [2022-11-16 12:20:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:10,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:10,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:20:10,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232898617] [2022-11-16 12:20:10,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:20:10,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:10,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:10,431 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:10,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:20:10,652 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-16 12:20:10,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:20:10,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:20:10,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:20:10,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:20:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:20:10,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:10,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927053241] [2022-11-16 12:20:10,997 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:20:10,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232898617] [2022-11-16 12:20:10,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232898617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:20:10,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:20:10,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-16 12:20:10,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929343225] [2022-11-16 12:20:10,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:20:11,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:20:11,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:11,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:20:11,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:20:11,002 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:11,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:11,406 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2022-11-16 12:20:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:20:11,407 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-16 12:20:11,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:11,408 INFO L225 Difference]: With dead ends: 129 [2022-11-16 12:20:11,408 INFO L226 Difference]: Without dead ends: 74 [2022-11-16 12:20:11,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:20:11,410 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 110 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:11,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 28 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:20:11,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-16 12:20:11,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2022-11-16 12:20:11,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-11-16 12:20:11,439 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 33 [2022-11-16 12:20:11,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:11,440 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-11-16 12:20:11,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:11,440 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-11-16 12:20:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:20:11,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:11,442 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:20:11,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 12:20:11,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:20:11,650 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash 236928956, now seen corresponding path program 6 times [2022-11-16 12:20:11,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:11,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668137005] [2022-11-16 12:20:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:11,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:11,685 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:20:11,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403976169] [2022-11-16 12:20:11,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:20:11,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:11,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:11,688 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:11,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:20:11,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-16 12:20:11,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:20:11,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:20:11,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:20:11,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:20:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:20:12,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:12,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668137005] [2022-11-16 12:20:12,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:20:12,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403976169] [2022-11-16 12:20:12,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403976169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:20:12,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:20:12,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-16 12:20:12,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168526566] [2022-11-16 12:20:12,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:20:12,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:20:12,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:12,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:20:12,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:20:12,138 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:12,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:12,523 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2022-11-16 12:20:12,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:20:12,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-16 12:20:12,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:12,524 INFO L225 Difference]: With dead ends: 69 [2022-11-16 12:20:12,525 INFO L226 Difference]: Without dead ends: 53 [2022-11-16 12:20:12,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:20:12,526 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 69 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:12,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 30 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:20:12,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-16 12:20:12,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2022-11-16 12:20:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:12,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-11-16 12:20:12,565 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 35 [2022-11-16 12:20:12,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:12,566 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-11-16 12:20:12,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:12,566 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-11-16 12:20:12,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 12:20:12,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:12,568 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:20:12,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:20:12,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:12,775 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:12,776 INFO L85 PathProgramCache]: Analyzing trace with hash 315843584, now seen corresponding path program 7 times [2022-11-16 12:20:12,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:12,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339732202] [2022-11-16 12:20:12,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:12,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:12,809 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:20:12,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62688085] [2022-11-16 12:20:12,810 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:20:12,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:12,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:12,812 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:12,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc004788-85b4-4f62-b594-0173dc9c6f8e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:20:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:12,977 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-16 12:20:12,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:13,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:20:13,074 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 [2022-11-16 12:20:13,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:20:13,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-16 12:20:13,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:13,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:13,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:13,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 12:20:13,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:13,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:20:13,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:13,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-11-16 12:20:14,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:14,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:14,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:14,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:20:14,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2022-11-16 12:20:14,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:14,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:14,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 47 [2022-11-16 12:20:14,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:14,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:20:14,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:14,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 51 [2022-11-16 12:20:15,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:15,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:15,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:15,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:20:15,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 56 [2022-11-16 12:20:15,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:15,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:15,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 51 [2022-11-16 12:20:15,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:15,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:15,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 45 [2022-11-16 12:20:15,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:15,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:20:15,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:15,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-11-16 12:20:16,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:16,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:16,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:16,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:20:16,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:20:16,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2022-11-16 12:20:16,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2022-11-16 12:20:16,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 39 [2022-11-16 12:20:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:20:16,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:22:04,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:22:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:22:04,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:22:04,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339732202] [2022-11-16 12:22:04,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:22:04,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62688085] [2022-11-16 12:22:04,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62688085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:22:04,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:22:04,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29] total 58 [2022-11-16 12:22:04,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9695808] [2022-11-16 12:22:04,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:22:04,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-16 12:22:04,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:22:04,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-16 12:22:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=3011, Unknown=2, NotChecked=0, Total=3306 [2022-11-16 12:22:04,782 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 58 states, 58 states have (on average 1.293103448275862) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:22:38,741 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse87 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse85 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse0 (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0)) (.cse84 (store .cse87 (+ .cse85 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) (.cse86 (+ .cse85 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse69 (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0))) (let ((.cse19 (not .cse69)) (.cse18 (store .cse87 .cse86 1)) (.cse34 (store .cse84 .cse86 1)) (.cse52 (+ .cse85 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse36 (not .cse0)) (.cse53 (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0)) (.cse35 (<= (mod c_~N~0 4294967296) 536870911)) (.cse1 (+ c_~N~0 (* c_~N~0 c_~N~0))) (.cse6 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse0 (= .cse1 (let ((.cse2 (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse18))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse13 (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse14 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse12 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse14 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (let ((.cse8 (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse14 .cse15))))) (store .cse8 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse10 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse9 (let ((.cse11 (store .cse10 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse12 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse13 .cse14 .cse15)))) (store .cse11 .cse7 (+ (select (select (store .cse8 |c_ULTIMATE.start_main_~a~0#1.base| .cse11) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse10 .cse7)))))) (store .cse9 .cse6 (+ (select (select (store .cse8 |c_ULTIMATE.start_main_~a~0#1.base| .cse9) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse10 .cse6)))))))))))))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse5 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse4)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse4 .cse5)))))) .cse19) (or (= .cse1 (let ((.cse20 (let ((.cse32 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse34))) (let ((.cse33 (select .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse28 (select .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse29 (select .cse34 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse31 (select (select (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse28 .cse29))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse30 (select (select (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse28 .cse29 .cse31))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (let ((.cse24 (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse28 .cse29 .cse30 .cse31))))) (store .cse24 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse26 (select .cse24 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse25 (let ((.cse27 (store .cse26 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse28 .cse29 .cse30 (select .cse26 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse31)))) (store .cse27 .cse7 (+ (select .cse26 .cse7) (select (select (store .cse24 |c_ULTIMATE.start_main_~a~0#1.base| .cse27) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse25 .cse6 (+ (select (select (store .cse24 |c_ULTIMATE.start_main_~a~0#1.base| .cse25) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse26 .cse6)))))))))))))) (let ((.cse21 (select .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse23 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse22 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse23)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (+ (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse21 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse22 .cse23))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse22 .cse23)))))) .cse0 .cse19) .cse35 (or .cse36 (= .cse1 (let ((.cse37 (let ((.cse51 (store .cse18 .cse52 1))) (let ((.cse49 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse51))) (let ((.cse50 (select .cse49 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse45 (select .cse51 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse48 (select .cse50 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse47 (select (select (store .cse49 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse45 .cse48))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse46 (select (select (store .cse49 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse45 .cse47 .cse48))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (let ((.cse41 (store .cse49 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse45 .cse46 .cse47 .cse48))))) (store .cse41 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse43 (select .cse41 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse42 (let ((.cse44 (store .cse43 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse45 .cse46 .cse47 .cse48 (select .cse43 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (store .cse44 .cse7 (+ (select (select (store .cse41 |c_ULTIMATE.start_main_~a~0#1.base| .cse44) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse43 .cse7)))))) (store .cse42 .cse6 (+ (select .cse43 .cse6) (select (select (store .cse41 |c_ULTIMATE.start_main_~a~0#1.base| .cse42) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))))))))))) (let ((.cse38 (select .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse39 (select (select (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse38 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse40 (select (select (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse38 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse39)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (+ (select (select (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse38 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse39 .cse40))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse39 .cse40)))))) .cse53) (or (= .cse1 (let ((.cse54 (let ((.cse68 (store .cse34 .cse52 1))) (let ((.cse66 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse68))) (let ((.cse67 (select .cse66 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse62 (select .cse67 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse63 (select .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse64 (select (select (store .cse66 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse67 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse62 .cse63))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse65 (select (select (store .cse66 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse67 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse62 .cse63 .cse64))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (let ((.cse58 (store .cse66 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse67 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse62 .cse63 .cse64 .cse65))))) (store .cse58 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse60 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse59 (let ((.cse61 (store .cse60 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse62 .cse63 .cse64 .cse65 (select .cse60 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (store .cse61 .cse7 (+ (select .cse60 .cse7) (select (select (store .cse58 |c_ULTIMATE.start_main_~a~0#1.base| .cse61) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (store .cse59 .cse6 (+ (select .cse60 .cse6) (select (select (store .cse58 |c_ULTIMATE.start_main_~a~0#1.base| .cse59) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))))))))))) (let ((.cse55 (select .cse54 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse56 (select (select (store .cse54 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse55 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse57 (select (select (store .cse54 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse55 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse56)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (+ (select (select (store .cse54 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse55 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse56 .cse57))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse56 .cse57)))))) .cse36 .cse53) (or (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse35) (and (not .cse35) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0))) (or .cse69 (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (= .cse1 (let ((.cse71 (let ((.cse82 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse84))) (let ((.cse83 (select .cse82 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse78 (select .cse83 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse81 (select .cse84 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse80 (select (select (store .cse82 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse83 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse78 .cse81))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse79 (select (select (store .cse82 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse83 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse78 .cse80 .cse81))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (let ((.cse74 (store .cse82 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse83 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse78 .cse79 .cse80 .cse81))))) (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse76 (select .cse74 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse75 (let ((.cse77 (store .cse76 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse78 .cse79 (select .cse76 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse80 .cse81)))) (store .cse77 .cse7 (+ (select (select (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| .cse77) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse76 .cse7)))))) (store .cse75 .cse6 (+ (select (select (store .cse74 |c_ULTIMATE.start_main_~a~0#1.base| .cse75) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse76 .cse6)))))))))))))) (let ((.cse72 (select .cse71 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse70 (select (select (store .cse71 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse72 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse73 (select (select (store .cse71 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse72 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse70)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (+ .cse70 (select (select (store .cse71 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse72 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse70 .cse73))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse73))))))))))) is different from true [2022-11-16 12:24:10,585 WARN L233 SmtUtils]: Spent 19.61s on a formula simplification. DAG size of input: 313 DAG size of output: 44 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:24:50,534 WARN L233 SmtUtils]: Spent 11.50s on a formula simplification. DAG size of input: 210 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:26:22,239 WARN L233 SmtUtils]: Spent 18.45s on a formula simplification. DAG size of input: 318 DAG size of output: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)