./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array6_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array6_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8 --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 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 --- 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-2329fc7 [2022-12-13 18:31:27,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:31:27,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:31:27,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:31:27,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:31:27,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:31:27,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:31:27,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:31:27,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:31:27,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:31:27,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:31:27,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:31:27,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:31:27,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:31:27,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:31:27,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:31:27,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:31:27,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:31:27,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:31:27,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:31:27,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:31:27,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:31:27,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:31:27,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:31:27,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:31:27,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:31:27,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:31:27,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:31:27,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:31:27,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:31:27,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:31:27,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:31:27,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:31:27,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:31:27,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:31:27,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:31:27,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:31:27,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:31:27,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:31:27,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:31:27,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:31:27,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:31:27,143 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:31:27,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:31:27,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:31:27,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:31:27,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:31:27,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:31:27,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:31:27,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:31:27,145 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:31:27,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:31:27,146 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:31:27,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:31:27,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:31:27,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:31:27,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:31:27,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:31:27,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:31:27,147 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:31:27,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:31:27,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:31:27,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:31:27,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:31:27,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:31:27,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:31:27,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:31:27,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:31:27,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:31:27,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:31:27,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:31:27,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:31:27,149 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:31:27,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:31:27,150 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:31:27,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:31:27,150 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:31:27,150 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 [2022-12-13 18:31:27,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:31:27,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:31:27,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:31:27,362 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:31:27,363 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:31:27,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-patterns/array6_pattern.c [2022-12-13 18:31:29,931 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:31:30,081 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:31:30,081 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/sv-benchmarks/c/array-patterns/array6_pattern.c [2022-12-13 18:31:30,086 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/data/f9e4e9aae/556267b28f7a4da08dec97322b6269a3/FLAG288362951 [2022-12-13 18:31:30,096 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/data/f9e4e9aae/556267b28f7a4da08dec97322b6269a3 [2022-12-13 18:31:30,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:31:30,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:31:30,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:31:30,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:31:30,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:31:30,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48920f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30, skipping insertion in model container [2022-12-13 18:31:30,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:31:30,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:31:30,249 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/sv-benchmarks/c/array-patterns/array6_pattern.c[1356,1369] [2022-12-13 18:31:30,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:31:30,275 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:31:30,286 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/sv-benchmarks/c/array-patterns/array6_pattern.c[1356,1369] [2022-12-13 18:31:30,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:31:30,306 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:31:30,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30 WrapperNode [2022-12-13 18:31:30,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:31:30,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:31:30,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:31:30,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:31:30,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,337 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-12-13 18:31:30,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:31:30,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:31:30,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:31:30,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:31:30,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,360 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:31:30,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:31:30,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:31:30,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:31:30,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (1/1) ... [2022-12-13 18:31:30,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:31:30,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:31:30,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:31:30,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:31:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:31:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 18:31:30,419 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 18:31:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:31:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:31:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:31:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:31:30,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:31:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:31:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:31:30,476 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:31:30,477 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:31:30,590 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:31:30,594 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:31:30,594 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 18:31:30,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:31:30 BoogieIcfgContainer [2022-12-13 18:31:30,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:31:30,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:31:30,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:31:30,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:31:30,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:31:30" (1/3) ... [2022-12-13 18:31:30,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f40a75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:31:30, skipping insertion in model container [2022-12-13 18:31:30,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:31:30" (2/3) ... [2022-12-13 18:31:30,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f40a75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:31:30, skipping insertion in model container [2022-12-13 18:31:30,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:31:30" (3/3) ... [2022-12-13 18:31:30,602 INFO L112 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2022-12-13 18:31:30,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:31:30,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:31:30,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:31:30,654 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;@626dff2b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:31:30,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:31:30,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:31:30,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 18:31:30,663 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:30,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:30,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:30,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:30,668 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2022-12-13 18:31:30,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:30,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074910990] [2022-12-13 18:31:30,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:30,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:30,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:31:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:31:30,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:30,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074910990] [2022-12-13 18:31:30,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074910990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:30,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:30,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:31:30,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161818625] [2022-12-13 18:31:30,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:30,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:31:30,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:30,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:31:30,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:31:30,818 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 18:31:30,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:30,832 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-12-13 18:31:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:31:30,834 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-12-13 18:31:30,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:30,839 INFO L225 Difference]: With dead ends: 47 [2022-12-13 18:31:30,839 INFO L226 Difference]: Without dead ends: 21 [2022-12-13 18:31:30,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:31:30,844 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 [2022-12-13 18:31:30,845 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] [2022-12-13 18:31:30,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-13 18:31:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-13 18:31:30,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:31:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-12-13 18:31:30,872 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-12-13 18:31:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:30,872 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-12-13 18:31:30,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 18:31:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-12-13 18:31:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 18:31:30,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:30,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:30,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:31:30,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:30,875 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2022-12-13 18:31:30,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:30,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373846374] [2022-12-13 18:31:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:30,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:31,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:31:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:31,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:31:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:31:31,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:31,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373846374] [2022-12-13 18:31:31,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373846374] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:31,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:31,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:31:31,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955342034] [2022-12-13 18:31:31,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:31,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:31:31,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:31,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:31:31,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:31:31,058 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:31:31,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:31,082 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-12-13 18:31:31,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:31:31,082 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-12-13 18:31:31,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:31,083 INFO L225 Difference]: With dead ends: 26 [2022-12-13 18:31:31,083 INFO L226 Difference]: Without dead ends: 22 [2022-12-13 18:31:31,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:31,084 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:31,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:31:31,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-13 18:31:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-13 18:31:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:31:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-12-13 18:31:31,089 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2022-12-13 18:31:31,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:31,090 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-12-13 18:31:31,090 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), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:31:31,090 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-12-13 18:31:31,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 18:31:31,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:31,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:31,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:31:31,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:31,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:31,092 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2022-12-13 18:31:31,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:31,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787729840] [2022-12-13 18:31:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:31,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:31,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:31:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:31,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:31:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:31:31,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:31,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787729840] [2022-12-13 18:31:31,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787729840] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:31,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:31,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:31:31,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781578895] [2022-12-13 18:31:31,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:31,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:31:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:31:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:31,202 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:31:31,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:31,240 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-12-13 18:31:31,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:31:31,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-12-13 18:31:31,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:31,242 INFO L225 Difference]: With dead ends: 41 [2022-12-13 18:31:31,242 INFO L226 Difference]: Without dead ends: 25 [2022-12-13 18:31:31,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:31:31,244 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:31,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 55 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:31:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-13 18:31:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-12-13 18:31:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:31:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-12-13 18:31:31,248 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2022-12-13 18:31:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:31,249 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-12-13 18:31:31,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:31:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-12-13 18:31:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 18:31:31,249 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:31,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:31,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:31:31,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:31,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:31,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2022-12-13 18:31:31,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:31,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108189939] [2022-12-13 18:31:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:31,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:31:31,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027468427] [2022-12-13 18:31:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:31,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:31,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:31:31,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:31:31,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:31:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:31,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:31:31,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:31:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:31:31,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:31:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:31:31,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:31,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108189939] [2022-12-13 18:31:31,555 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:31:31,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027468427] [2022-12-13 18:31:31,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027468427] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:31:31,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:31:31,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-13 18:31:31,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942210001] [2022-12-13 18:31:31,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:31:31,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:31:31,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:31,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:31:31,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:31:31,558 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:31:31,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:31,738 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-12-13 18:31:31,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 18:31:31,738 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2022-12-13 18:31:31,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:31,740 INFO L225 Difference]: With dead ends: 71 [2022-12-13 18:31:31,740 INFO L226 Difference]: Without dead ends: 43 [2022-12-13 18:31:31,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-12-13 18:31:31,741 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:31,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 76 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:31:31,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-13 18:31:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2022-12-13 18:31:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:31:31,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-12-13 18:31:31,746 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 26 [2022-12-13 18:31:31,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:31,746 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-12-13 18:31:31,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:31:31,747 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-12-13 18:31:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-13 18:31:31,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:31,748 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:31,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:31:31,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:31,949 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:31,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1559224519, now seen corresponding path program 2 times [2022-12-13 18:31:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:31,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836867022] [2022-12-13 18:31:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:31,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:31,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:31:31,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540518501] [2022-12-13 18:31:31,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:31:31,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:31,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:31:31,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:31:31,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:31:32,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:31:32,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:31:32,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:31:32,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:31:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:31:32,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:31:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:31:32,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:32,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836867022] [2022-12-13 18:31:32,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:31:32,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540518501] [2022-12-13 18:31:32,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540518501] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:31:32,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:31:32,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-12-13 18:31:32,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332353991] [2022-12-13 18:31:32,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:31:32,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:31:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:31:32,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:31:32,261 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:31:32,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:32,369 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-12-13 18:31:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:31:32,369 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-12-13 18:31:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:32,370 INFO L225 Difference]: With dead ends: 39 [2022-12-13 18:31:32,370 INFO L226 Difference]: Without dead ends: 35 [2022-12-13 18:31:32,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:31:32,370 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:32,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 105 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:31:32,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-13 18:31:32,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-12-13 18:31:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:31:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-12-13 18:31:32,375 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2022-12-13 18:31:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:32,375 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-12-13 18:31:32,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:31:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-12-13 18:31:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 18:31:32,376 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:32,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:32,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:31:32,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:32,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:32,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:32,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 3 times [2022-12-13 18:31:32,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:32,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272947827] [2022-12-13 18:31:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:32,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:32,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:31:32,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484788719] [2022-12-13 18:31:32,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:31:32,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:32,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:31:32,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:31:32,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:31:32,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 18:31:32,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:31:32,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-13 18:31:32,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:31:32,864 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 [2022-12-13 18:31:32,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:32,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2022-12-13 18:31:32,910 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 33 treesize of output 33 [2022-12-13 18:31:32,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2022-12-13 18:31:32,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-12-13 18:31:32,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:32,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2022-12-13 18:31:32,991 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 34 treesize of output 32 [2022-12-13 18:31:32,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:32,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-12-13 18:31:33,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2022-12-13 18:31:33,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2022-12-13 18:31:33,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,100 INFO L321 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-12-13 18:31:33,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 34 [2022-12-13 18:31:33,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,120 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-12-13 18:31:33,120 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2022-12-13 18:31:33,723 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-12-13 18:31:33,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 334 treesize of output 217 [2022-12-13 18:31:33,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-12-13 18:31:33,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-12-13 18:31:33,778 INFO L321 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-12-13 18:31:33,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 176 treesize of output 219 [2022-12-13 18:31:33,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,834 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-12-13 18:31:33,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 160 [2022-12-13 18:31:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:33,900 INFO L321 Elim1Store]: treesize reduction 54, result has 21.7 percent of original size [2022-12-13 18:31:33,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 82 [2022-12-13 18:31:34,009 INFO L321 Elim1Store]: treesize reduction 50, result has 9.1 percent of original size [2022-12-13 18:31:34,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 206 treesize of output 178 [2022-12-13 18:31:34,035 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-12-13 18:31:34,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 176 [2022-12-13 18:31:34,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 282 treesize of output 224 [2022-12-13 18:31:34,074 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 17 treesize of output 11 [2022-12-13 18:31:35,517 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 18:31:35,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 181 [2022-12-13 18:31:35,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:35,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:35,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:31:35,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:31:35,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:35,672 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:31:35,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 206 treesize of output 440 [2022-12-13 18:31:35,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:35,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:35,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:31:35,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:31:35,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:31:35,900 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:31:35,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 296 treesize of output 478 [2022-12-13 18:32:49,533 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-13 18:32:49,935 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-13 18:32:51,218 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-13 18:32:52,170 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-13 18:32:52,643 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-13 18:32:53,080 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-13 18:32:53,293 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-13 18:32:53,990 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-13 18:32:54,333 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-13 18:32:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:59,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:00,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:00,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272947827] [2022-12-13 18:33:00,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:00,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484788719] [2022-12-13 18:33:00,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484788719] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:33:00,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:33:00,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-12-13 18:33:00,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244419593] [2022-12-13 18:33:00,338 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:00,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 18:33:00,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:00,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 18:33:00,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=910, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 18:33:00,340 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:33:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:01,701 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2022-12-13 18:33:01,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:33:01,702 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-12-13 18:33:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:01,703 INFO L225 Difference]: With dead ends: 58 [2022-12-13 18:33:01,703 INFO L226 Difference]: Without dead ends: 54 [2022-12-13 18:33:01,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=222, Invalid=1418, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 18:33:01,705 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 17 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:01,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 232 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 18:33:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-13 18:33:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2022-12-13 18:33:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:33:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2022-12-13 18:33:01,713 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 34 [2022-12-13 18:33:01,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:01,713 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2022-12-13 18:33:01,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:33:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2022-12-13 18:33:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 18:33:01,714 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:01,714 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:01,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:33:01,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:01,916 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:01,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:01,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1565541619, now seen corresponding path program 4 times [2022-12-13 18:33:01,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:01,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088412183] [2022-12-13 18:33:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:01,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:01,953 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:01,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847983975] [2022-12-13 18:33:01,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:33:01,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:01,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:01,956 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:01,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:33:02,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:33:02,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:33:02,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:33:02,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:33:02,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:33:02,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:02,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088412183] [2022-12-13 18:33:02,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:02,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847983975] [2022-12-13 18:33:02,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847983975] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:33:02,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:33:02,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-12-13 18:33:02,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270021349] [2022-12-13 18:33:02,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:02,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:33:02,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:02,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:33:02,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:33:02,165 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:02,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:02,285 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-12-13 18:33:02,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 18:33:02,285 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-12-13 18:33:02,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:02,286 INFO L225 Difference]: With dead ends: 103 [2022-12-13 18:33:02,286 INFO L226 Difference]: Without dead ends: 89 [2022-12-13 18:33:02,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:33:02,286 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 55 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:02,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 118 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:33:02,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-13 18:33:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2022-12-13 18:33:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.098360655737705) internal successors, (67), 61 states have internal predecessors, (67), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 18:33:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2022-12-13 18:33:02,299 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 36 [2022-12-13 18:33:02,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:02,300 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2022-12-13 18:33:02,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:02,300 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2022-12-13 18:33:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 18:33:02,300 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:02,300 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:02,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:33:02,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:02,502 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:02,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:02,503 INFO L85 PathProgramCache]: Analyzing trace with hash -285980785, now seen corresponding path program 5 times [2022-12-13 18:33:02,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:02,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009016785] [2022-12-13 18:33:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:02,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:02,548 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:02,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729826086] [2022-12-13 18:33:02,549 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 18:33:02,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:02,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:02,550 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:02,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:33:02,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-13 18:33:02,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:33:02,753 WARN L261 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-13 18:33:02,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:02,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 18:33:02,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:02,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2022-12-13 18:33:02,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2022-12-13 18:33:02,800 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 32 treesize of output 31 [2022-12-13 18:33:02,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:02,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-12-13 18:33:02,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:02,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-12-13 18:33:02,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:02,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:02,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2022-12-13 18:33:02,976 INFO L321 Elim1Store]: treesize reduction 33, result has 13.2 percent of original size [2022-12-13 18:33:02,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 122 treesize of output 102 [2022-12-13 18:33:02,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 45 [2022-12-13 18:33:02,995 INFO L321 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2022-12-13 18:33:02,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 81 [2022-12-13 18:33:03,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 43 [2022-12-13 18:33:03,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 47 [2022-12-13 18:33:03,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2022-12-13 18:33:03,085 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 11 treesize of output 5 [2022-12-13 18:33:03,209 INFO L321 Elim1Store]: treesize reduction 41, result has 10.9 percent of original size [2022-12-13 18:33:03,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 199 treesize of output 145 [2022-12-13 18:33:03,227 INFO L321 Elim1Store]: treesize reduction 68, result has 6.8 percent of original size [2022-12-13 18:33:03,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 161 treesize of output 150 [2022-12-13 18:33:03,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 101 [2022-12-13 18:33:03,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2022-12-13 18:33:03,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-12-13 18:33:03,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2022-12-13 18:33:03,269 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 11 treesize of output 5 [2022-12-13 18:33:03,825 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-12-13 18:33:03,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 361 treesize of output 238 [2022-12-13 18:33:03,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-12-13 18:33:03,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-12-13 18:33:03,890 INFO L321 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-12-13 18:33:03,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 196 treesize of output 235 [2022-12-13 18:33:03,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,966 INFO L321 Elim1Store]: treesize reduction 159, result has 14.1 percent of original size [2022-12-13 18:33:03,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 108 treesize of output 191 [2022-12-13 18:33:03,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:03,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:04,024 INFO L321 Elim1Store]: treesize reduction 81, result has 24.3 percent of original size [2022-12-13 18:33:04,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 91 [2022-12-13 18:33:04,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 93 [2022-12-13 18:33:04,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 18 [2022-12-13 18:33:04,140 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 74 treesize of output 56 [2022-12-13 18:33:05,313 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 18:33:05,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 153 [2022-12-13 18:33:05,373 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:33:05,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 153 treesize of output 239 [2022-12-13 18:33:05,448 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 18:33:05,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 170 treesize of output 248 [2022-12-13 18:33:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:33:06,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:07,014 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_380 (Array Int Int)) (v_ArrVal_382 (Array Int Int))) (= 0 (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse0 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_380) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_382) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse4 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3)) (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3 4))))))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse3)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))))) is different from false [2022-12-13 18:33:08,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:08,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009016785] [2022-12-13 18:33:08,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:08,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729826086] [2022-12-13 18:33:08,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729826086] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:33:08,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:33:08,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-12-13 18:33:08,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902281340] [2022-12-13 18:33:08,031 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:08,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 18:33:08,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:08,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 18:33:08,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1118, Unknown=2, NotChecked=68, Total=1332 [2022-12-13 18:33:08,033 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 23 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:33:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:10,304 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2022-12-13 18:33:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 18:33:10,304 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 23 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-12-13 18:33:10,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:10,305 INFO L225 Difference]: With dead ends: 100 [2022-12-13 18:33:10,305 INFO L226 Difference]: Without dead ends: 96 [2022-12-13 18:33:10,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=286, Invalid=2166, Unknown=2, NotChecked=96, Total=2550 [2022-12-13 18:33:10,306 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 52 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:10,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 287 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 18:33:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-12-13 18:33:10,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2022-12-13 18:33:10,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 72 states have (on average 1.1111111111111112) internal successors, (80), 72 states have internal predecessors, (80), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 18:33:10,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2022-12-13 18:33:10,324 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 38 [2022-12-13 18:33:10,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:10,325 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2022-12-13 18:33:10,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 23 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:33:10,325 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2022-12-13 18:33:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 18:33:10,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:10,326 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:10,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:33:10,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:10,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:10,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash 103605969, now seen corresponding path program 6 times [2022-12-13 18:33:10,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:10,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191383585] [2022-12-13 18:33:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:10,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:10,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:10,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442035960] [2022-12-13 18:33:10,565 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 18:33:10,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:10,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:10,568 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:10,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:33:10,771 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-12-13 18:33:10,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:33:10,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 18:33:10,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:33:10,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:33:10,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:10,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191383585] [2022-12-13 18:33:10,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:10,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442035960] [2022-12-13 18:33:10,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442035960] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:33:10,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:33:10,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-12-13 18:33:10,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924010342] [2022-12-13 18:33:10,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:10,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 18:33:10,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:10,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 18:33:10,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:33:10,917 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:11,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:11,127 INFO L93 Difference]: Finished difference Result 143 states and 151 transitions. [2022-12-13 18:33:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 18:33:11,127 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-12-13 18:33:11,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:11,128 INFO L225 Difference]: With dead ends: 143 [2022-12-13 18:33:11,128 INFO L226 Difference]: Without dead ends: 127 [2022-12-13 18:33:11,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2022-12-13 18:33:11,130 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 81 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:11,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 157 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:33:11,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-13 18:33:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 98. [2022-12-13 18:33:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 83 states have (on average 1.108433734939759) internal successors, (92), 83 states have internal predecessors, (92), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 18:33:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2022-12-13 18:33:11,172 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 40 [2022-12-13 18:33:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:11,172 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2022-12-13 18:33:11,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2022-12-13 18:33:11,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-12-13 18:33:11,173 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:11,174 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:11,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 18:33:11,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:11,374 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:11,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:11,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1011334033, now seen corresponding path program 7 times [2022-12-13 18:33:11,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:11,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350593516] [2022-12-13 18:33:11,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:11,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:11,385 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:11,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528238471] [2022-12-13 18:33:11,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 18:33:11,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:11,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:11,386 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:11,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:33:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:11,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 18:33:11,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:33:11,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:33:11,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:11,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350593516] [2022-12-13 18:33:11,609 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:11,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528238471] [2022-12-13 18:33:11,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528238471] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:33:11,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:33:11,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-12-13 18:33:11,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652186270] [2022-12-13 18:33:11,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:11,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 18:33:11,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:11,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 18:33:11,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:33:11,611 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:11,789 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2022-12-13 18:33:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 18:33:11,789 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-12-13 18:33:11,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:11,790 INFO L225 Difference]: With dead ends: 122 [2022-12-13 18:33:11,790 INFO L226 Difference]: Without dead ends: 118 [2022-12-13 18:33:11,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2022-12-13 18:33:11,792 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 65 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:11,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 155 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:33:11,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-12-13 18:33:11,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 91. [2022-12-13 18:33:11,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 78 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 18:33:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2022-12-13 18:33:11,816 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 40 [2022-12-13 18:33:11,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:11,816 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2022-12-13 18:33:11,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:11,817 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2022-12-13 18:33:11,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 18:33:11,817 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:11,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:11,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:33:12,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 18:33:12,019 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:12,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:12,021 INFO L85 PathProgramCache]: Analyzing trace with hash -943992564, now seen corresponding path program 1 times [2022-12-13 18:33:12,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:12,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826598404] [2022-12-13 18:33:12,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:12,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:12,054 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:12,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825701256] [2022-12-13 18:33:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:12,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:12,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:12,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:12,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:33:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:12,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 97 conjunts are in the unsatisfiable core [2022-12-13 18:33:12,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:12,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 18:33:12,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2022-12-13 18:33:12,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2022-12-13 18:33:12,256 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 32 treesize of output 31 [2022-12-13 18:33:12,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 67 [2022-12-13 18:33:12,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2022-12-13 18:33:12,843 INFO L321 Elim1Store]: treesize reduction 30, result has 14.3 percent of original size [2022-12-13 18:33:12,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 106 treesize of output 87 [2022-12-13 18:33:12,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 41 [2022-12-13 18:33:12,866 INFO L321 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2022-12-13 18:33:12,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 77 [2022-12-13 18:33:12,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 44 [2022-12-13 18:33:12,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:12,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:12,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 37 [2022-12-13 18:33:12,896 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 17 treesize of output 11 [2022-12-13 18:33:13,217 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-12-13 18:33:13,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 321 treesize of output 206 [2022-12-13 18:33:13,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-12-13 18:33:13,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-12-13 18:33:13,262 INFO L321 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-12-13 18:33:13,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 174 treesize of output 217 [2022-12-13 18:33:13,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:13,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:13,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:13,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:13,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 44 [2022-12-13 18:33:13,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:13,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:13,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:13,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:13,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:13,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:13,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 124 [2022-12-13 18:33:13,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-12-13 18:33:13,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 63 [2022-12-13 18:33:13,341 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 63 treesize of output 39 [2022-12-13 18:33:13,786 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-13 18:33:13,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 136 [2022-12-13 18:33:13,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:13,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:13,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 71 [2022-12-13 18:33:13,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:13,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:13,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 58 [2022-12-13 18:33:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:33:13,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:14,097 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_649 (Array Int Int)) (v_ArrVal_651 (Array Int Int))) (= 0 (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse1 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_649) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_651) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3 4)) (select .cse4 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse3)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)))))))) is different from false [2022-12-13 18:33:14,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:14,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826598404] [2022-12-13 18:33:14,268 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:14,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825701256] [2022-12-13 18:33:14,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825701256] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:33:14,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:33:14,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-12-13 18:33:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885192378] [2022-12-13 18:33:14,268 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:14,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 18:33:14,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 18:33:14,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1113, Unknown=2, NotChecked=68, Total=1332 [2022-12-13 18:33:14,269 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 23 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:33:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:15,605 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2022-12-13 18:33:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 18:33:15,605 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 23 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-12-13 18:33:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:15,605 INFO L225 Difference]: With dead ends: 97 [2022-12-13 18:33:15,605 INFO L226 Difference]: Without dead ends: 69 [2022-12-13 18:33:15,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=328, Invalid=2224, Unknown=2, NotChecked=98, Total=2652 [2022-12-13 18:33:15,606 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 58 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:15,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 229 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 18:33:15,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-13 18:33:15,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-12-13 18:33:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 18:33:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2022-12-13 18:33:15,622 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 42 [2022-12-13 18:33:15,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:15,623 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2022-12-13 18:33:15,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 23 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 18:33:15,623 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2022-12-13 18:33:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-13 18:33:15,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:15,623 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:15,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:33:15,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 18:33:15,825 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:15,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:15,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1282630227, now seen corresponding path program 8 times [2022-12-13 18:33:15,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:15,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711677190] [2022-12-13 18:33:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:15,835 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:15,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951506520] [2022-12-13 18:33:15,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:33:15,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:15,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:15,836 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:15,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 18:33:16,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:33:16,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:33:16,159 WARN L261 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 125 conjunts are in the unsatisfiable core [2022-12-13 18:33:16,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:16,181 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 [2022-12-13 18:33:16,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2022-12-13 18:33:16,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2022-12-13 18:33:16,211 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 32 treesize of output 31 [2022-12-13 18:33:16,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 69 [2022-12-13 18:33:16,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:16,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:16,436 INFO L321 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2022-12-13 18:33:16,436 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 7 case distinctions, treesize of input 82 treesize of output 74 [2022-12-13 18:33:16,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:16,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:16,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:16,573 INFO L321 Elim1Store]: treesize reduction 47, result has 23.0 percent of original size [2022-12-13 18:33:16,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 106 treesize of output 104 [2022-12-13 18:33:16,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:16,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:16,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:16,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:16,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:16,802 INFO L321 Elim1Store]: treesize reduction 55, result has 16.7 percent of original size [2022-12-13 18:33:16,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 124 treesize of output 131 [2022-12-13 18:33:17,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:17,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:17,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,740 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:17,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:17,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:17,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:17,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:17,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:17,961 INFO L321 Elim1Store]: treesize reduction 800, result has 12.5 percent of original size [2022-12-13 18:33:17,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 19 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 98 case distinctions, treesize of input 194 treesize of output 245 [2022-12-13 18:33:21,220 INFO L321 Elim1Store]: treesize reduction 484, result has 39.0 percent of original size [2022-12-13 18:33:21,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 10 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 280 treesize of output 424 [2022-12-13 18:33:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:33:25,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:26,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:26,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711677190] [2022-12-13 18:33:26,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:26,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951506520] [2022-12-13 18:33:26,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951506520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:33:26,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:33:26,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-12-13 18:33:26,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471079049] [2022-12-13 18:33:26,610 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:26,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 18:33:26,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:26,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 18:33:26,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1549, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 18:33:26,611 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 26 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:33:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:29,680 INFO L93 Difference]: Finished difference Result 98 states and 106 transitions. [2022-12-13 18:33:29,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 18:33:29,681 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 26 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-12-13 18:33:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:29,681 INFO L225 Difference]: With dead ends: 98 [2022-12-13 18:33:29,681 INFO L226 Difference]: Without dead ends: 94 [2022-12-13 18:33:29,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=336, Invalid=2856, Unknown=0, NotChecked=0, Total=3192 [2022-12-13 18:33:29,682 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 57 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:29,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 222 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 18:33:29,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-12-13 18:33:29,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 82. [2022-12-13 18:33:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 71 states have internal predecessors, (79), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 18:33:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2022-12-13 18:33:29,706 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 42 [2022-12-13 18:33:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:29,706 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2022-12-13 18:33:29,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 26 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 18:33:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2022-12-13 18:33:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 18:33:29,706 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:29,707 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:29,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 18:33:29,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 18:33:29,908 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:29,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1773046770, now seen corresponding path program 2 times [2022-12-13 18:33:29,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:29,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29328301] [2022-12-13 18:33:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:29,923 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:29,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786577976] [2022-12-13 18:33:29,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:33:29,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:29,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:29,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:29,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 18:33:30,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:33:30,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:33:30,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:33:30,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 18:33:30,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 18:33:30,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:30,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29328301] [2022-12-13 18:33:30,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:30,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786577976] [2022-12-13 18:33:30,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786577976] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:33:30,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:33:30,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-12-13 18:33:30,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174306105] [2022-12-13 18:33:30,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:30,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:33:30,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:30,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:33:30,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:33:30,143 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:30,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:30,308 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2022-12-13 18:33:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:33:30,309 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-12-13 18:33:30,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:30,309 INFO L225 Difference]: With dead ends: 94 [2022-12-13 18:33:30,309 INFO L226 Difference]: Without dead ends: 90 [2022-12-13 18:33:30,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:33:30,310 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 46 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:30,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 120 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:33:30,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-13 18:33:30,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-12-13 18:33:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 71 states have internal predecessors, (78), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 18:33:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2022-12-13 18:33:30,334 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 44 [2022-12-13 18:33:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:30,334 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2022-12-13 18:33:30,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2022-12-13 18:33:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 18:33:30,335 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:30,335 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:30,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 18:33:30,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 18:33:30,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:30,536 INFO L85 PathProgramCache]: Analyzing trace with hash 5267605, now seen corresponding path program 9 times [2022-12-13 18:33:30,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:30,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823549805] [2022-12-13 18:33:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:30,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:30,549 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:30,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786192231] [2022-12-13 18:33:30,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:33:30,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:30,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:30,550 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:30,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 18:33:30,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-13 18:33:30,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:33:30,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 18:33:30,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:33:30,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:33:30,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:30,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823549805] [2022-12-13 18:33:30,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:30,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786192231] [2022-12-13 18:33:30,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786192231] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:33:30,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:33:30,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2022-12-13 18:33:30,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874665791] [2022-12-13 18:33:30,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:30,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 18:33:30,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:30,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 18:33:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-12-13 18:33:30,945 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:31,248 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2022-12-13 18:33:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:33:31,248 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-12-13 18:33:31,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:31,249 INFO L225 Difference]: With dead ends: 133 [2022-12-13 18:33:31,249 INFO L226 Difference]: Without dead ends: 115 [2022-12-13 18:33:31,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 18:33:31,251 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 124 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:31,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 143 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:33:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-13 18:33:31,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 90. [2022-12-13 18:33:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 77 states have internal predecessors, (84), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 18:33:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2022-12-13 18:33:31,280 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 44 [2022-12-13 18:33:31,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:31,280 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2022-12-13 18:33:31,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2022-12-13 18:33:31,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 18:33:31,280 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:31,280 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:31,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 18:33:31,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:31,482 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:31,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:31,482 INFO L85 PathProgramCache]: Analyzing trace with hash 453576021, now seen corresponding path program 10 times [2022-12-13 18:33:31,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:31,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714572522] [2022-12-13 18:33:31,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:31,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:31,523 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:31,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912832735] [2022-12-13 18:33:31,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 18:33:31,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:31,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:31,526 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:31,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 18:33:31,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 18:33:31,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:33:31,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 18:33:31,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 29 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:33:31,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:33:31,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:31,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714572522] [2022-12-13 18:33:31,891 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 18:33:31,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912832735] [2022-12-13 18:33:31,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912832735] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:33:31,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:33:31,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2022-12-13 18:33:31,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134535642] [2022-12-13 18:33:31,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:31,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 18:33:31,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:31,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 18:33:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-12-13 18:33:31,893 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:32,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:32,099 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2022-12-13 18:33:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 18:33:32,100 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-12-13 18:33:32,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:32,100 INFO L225 Difference]: With dead ends: 114 [2022-12-13 18:33:32,100 INFO L226 Difference]: Without dead ends: 110 [2022-12-13 18:33:32,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 18:33:32,101 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 59 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:32,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 165 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:33:32,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-13 18:33:32,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 92. [2022-12-13 18:33:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 79 states have internal predecessors, (86), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 18:33:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2022-12-13 18:33:32,129 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 44 [2022-12-13 18:33:32,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:32,129 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2022-12-13 18:33:32,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:33:32,129 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2022-12-13 18:33:32,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 18:33:32,130 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:32,130 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:32,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 18:33:32,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:32,331 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:32,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1257303952, now seen corresponding path program 3 times [2022-12-13 18:33:32,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:32,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30363665] [2022-12-13 18:33:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:32,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:32,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 18:33:32,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542855698] [2022-12-13 18:33:32,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:33:32,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:32,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:32,351 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:32,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d627362e-546a-48da-829c-71b33b6d9282/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 18:33:32,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-13 18:33:32,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:33:32,800 WARN L261 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 126 conjunts are in the unsatisfiable core [2022-12-13 18:33:32,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:32,814 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 [2022-12-13 18:33:32,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:32,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2022-12-13 18:33:32,847 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 33 treesize of output 33 [2022-12-13 18:33:32,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-12-13 18:33:32,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 14 [2022-12-13 18:33:32,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:32,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 69 [2022-12-13 18:33:33,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:33,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:33,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:33,111 INFO L321 Elim1Store]: treesize reduction 312, result has 13.1 percent of original size [2022-12-13 18:33:33,111 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 11 case distinctions, treesize of input 82 treesize of output 74 [2022-12-13 18:33:33,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:33,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:33,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:33,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:33,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:33,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:33,340 INFO L321 Elim1Store]: treesize reduction 432, result has 9.8 percent of original size [2022-12-13 18:33:33,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 197 treesize of output 117 [2022-12-13 18:33:34,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:34,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:34,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:34,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:34,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:34,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:34,298 INFO L321 Elim1Store]: treesize reduction 694, result has 9.8 percent of original size [2022-12-13 18:33:34,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 14 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 71 case distinctions, treesize of input 190 treesize of output 208 [2022-12-13 18:33:36,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:36,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:36,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:36,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:36,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:36,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 18:33:38,626 INFO L321 Elim1Store]: treesize reduction 2848, result has 10.7 percent of original size [2022-12-13 18:33:38,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 9 disjoint index pairs (out of 171 index pairs), introduced 22 new quantified variables, introduced 185 case distinctions, treesize of input 424 treesize of output 544 [2022-12-13 18:33:46,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:33:46,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:34:05,253 WARN L233 SmtUtils]: Spent 18.72s on a formula simplification. DAG size of input: 1166 DAG size of output: 588 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 18:34:05,255 INFO L321 Elim1Store]: treesize reduction 3968, result has 35.9 percent of original size [2022-12-13 18:34:05,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 32 select indices, 32 select index equivalence classes, 3 disjoint index pairs (out of 496 index pairs), introduced 35 new quantified variables, introduced 496 case distinctions, treesize of input 586 treesize of output 2441