./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array3_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array3_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc --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 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 --- 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-5e519f3 [2022-11-02 20:39:24,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:39:24,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:39:24,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:39:24,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:39:24,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:39:24,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:39:24,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:39:24,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:39:24,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:39:24,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:39:24,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:39:24,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:39:24,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:39:24,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:39:24,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:39:24,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:39:24,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:39:24,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:39:24,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:39:24,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:39:24,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:39:24,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:39:24,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:39:24,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:39:24,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:39:24,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:39:24,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:39:24,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:39:24,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:39:24,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:39:24,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:39:24,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:39:24,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:39:24,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:39:24,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:39:24,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:39:24,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:39:24,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:39:24,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:39:24,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:39:24,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:39:24,198 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:39:24,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:39:24,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:39:24,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:39:24,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:39:24,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:39:24,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:39:24,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:39:24,202 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:39:24,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:39:24,203 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:39:24,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:39:24,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:39:24,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:39:24,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:39:24,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:39:24,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:39:24,205 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:39:24,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:39:24,206 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:39:24,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:39:24,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:39:24,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:39:24,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:39:24,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:24,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:39:24,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:39:24,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:39:24,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:39:24,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:39:24,209 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:39:24,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:39:24,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:39:24,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 [2022-11-02 20:39:24,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:39:24,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:39:24,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:39:24,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:39:24,566 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:39:24,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/array-patterns/array3_pattern.c [2022-11-02 20:39:24,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/data/0ce01b275/aead7a15881d475a9e180c53dd170512/FLAG481c41b37 [2022-11-02 20:39:25,180 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:39:25,181 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/sv-benchmarks/c/array-patterns/array3_pattern.c [2022-11-02 20:39:25,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/data/0ce01b275/aead7a15881d475a9e180c53dd170512/FLAG481c41b37 [2022-11-02 20:39:25,570 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/data/0ce01b275/aead7a15881d475a9e180c53dd170512 [2022-11-02 20:39:25,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:39:25,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:39:25,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:25,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:39:25,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:39:25,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4c4e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25, skipping insertion in model container [2022-11-02 20:39:25,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:39:25,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:39:25,786 WARN L230 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_c20e8773-606c-40d3-b455-c89b33679bb3/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2022-11-02 20:39:25,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:25,837 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:39:25,849 WARN L230 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_c20e8773-606c-40d3-b455-c89b33679bb3/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2022-11-02 20:39:25,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:25,874 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:39:25,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25 WrapperNode [2022-11-02 20:39:25,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:25,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:25,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:39:25,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:39:25,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,910 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2022-11-02 20:39:25,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:25,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:39:25,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:39:25,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:39:25,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,936 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:39:25,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:39:25,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:39:25,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:39:25,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (1/1) ... [2022-11-02 20:39:25,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:25,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:25,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:39:25,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:39:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:39:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:39:26,026 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:39:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:39:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:39:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:39:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure square [2022-11-02 20:39:26,027 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2022-11-02 20:39:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:39:26,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:39:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:39:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:39:26,128 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:39:26,130 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:39:26,404 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:39:26,411 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:39:26,411 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:39:26,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:26 BoogieIcfgContainer [2022-11-02 20:39:26,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:39:26,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:39:26,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:39:26,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:39:26,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:39:25" (1/3) ... [2022-11-02 20:39:26,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46030a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:26, skipping insertion in model container [2022-11-02 20:39:26,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:25" (2/3) ... [2022-11-02 20:39:26,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46030a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:26, skipping insertion in model container [2022-11-02 20:39:26,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:26" (3/3) ... [2022-11-02 20:39:26,425 INFO L112 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2022-11-02 20:39:26,447 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:39:26,447 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:39:26,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:26,511 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;@197a21f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:26,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:39:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:39:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:39:26,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:26,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:26,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:26,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:26,534 INFO L85 PathProgramCache]: Analyzing trace with hash -87958078, now seen corresponding path program 1 times [2022-11-02 20:39:26,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:26,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898251510] [2022-11-02 20:39:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:26,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:39:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:26,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:26,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898251510] [2022-11-02 20:39:26,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898251510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:26,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:26,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:26,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775629106] [2022-11-02 20:39:26,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:26,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:39:26,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:26,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:39:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:39:26,744 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2022-11-02 20:39:26,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:26,773 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2022-11-02 20:39:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:39:26,776 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 [2022-11-02 20:39:26,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:26,784 INFO L225 Difference]: With dead ends: 61 [2022-11-02 20:39:26,784 INFO L226 Difference]: Without dead ends: 28 [2022-11-02 20:39:26,788 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 [2022-11-02 20:39:26,797 INFO L413 NwaCegarLoop]: 36 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, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:26,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-02 20:39:26,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-02 20:39:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:39:26,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-02 20:39:26,902 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2022-11-02 20:39:26,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:26,903 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-02 20:39:26,904 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) [2022-11-02 20:39:26,905 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-02 20:39:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:39:26,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:26,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:26,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:39:26,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:26,911 INFO L85 PathProgramCache]: Analyzing trace with hash 100431803, now seen corresponding path program 1 times [2022-11-02 20:39:26,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:26,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996547617] [2022-11-02 20:39:26,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:26,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:26,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:39:26,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976712251] [2022-11-02 20:39:26,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:26,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:26,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:26,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:27,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:39:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:39:27,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:39:27,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:27,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:27,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996547617] [2022-11-02 20:39:27,292 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:39:27,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976712251] [2022-11-02 20:39:27,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976712251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:27,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:27,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:27,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149686615] [2022-11-02 20:39:27,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:27,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:27,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:27,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:27,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:27,296 INFO L87 Difference]: Start difference. First operand 28 states and 32 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) [2022-11-02 20:39:27,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:27,329 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-11-02 20:39:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:39:27,330 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 [2022-11-02 20:39:27,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:27,331 INFO L225 Difference]: With dead ends: 35 [2022-11-02 20:39:27,331 INFO L226 Difference]: Without dead ends: 31 [2022-11-02 20:39:27,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:27,333 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:27,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:39:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-02 20:39:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-11-02 20:39:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:39:27,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-02 20:39:27,343 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2022-11-02 20:39:27,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:27,343 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-02 20:39:27,344 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) [2022-11-02 20:39:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-02 20:39:27,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-02 20:39:27,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:27,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:27,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:27,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:27,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash -562345857, now seen corresponding path program 1 times [2022-11-02 20:39:27,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:27,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811536607] [2022-11-02 20:39:27,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:27,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:27,634 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:39:27,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056120650] [2022-11-02 20:39:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:27,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:27,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:27,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:27,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:39:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:27,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:39:27,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:39:27,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:27,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:27,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811536607] [2022-11-02 20:39:27,875 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:39:27,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056120650] [2022-11-02 20:39:27,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056120650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:27,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:27,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:27,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756016038] [2022-11-02 20:39:27,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:27,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:27,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:27,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:27,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:27,879 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 20:39:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:27,967 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-11-02 20:39:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:39:27,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2022-11-02 20:39:27,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:27,969 INFO L225 Difference]: With dead ends: 59 [2022-11-02 20:39:27,970 INFO L226 Difference]: Without dead ends: 36 [2022-11-02 20:39:27,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:39:27,972 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:27,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 100 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:27,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-02 20:39:27,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2022-11-02 20:39:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:39:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-02 20:39:27,980 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2022-11-02 20:39:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:27,980 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-02 20:39:27,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 20:39:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-02 20:39:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:39:27,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:27,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:28,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:28,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:28,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:28,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:28,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1168592577, now seen corresponding path program 1 times [2022-11-02 20:39:28,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:28,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411766564] [2022-11-02 20:39:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:28,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:28,255 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:39:28,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285968874] [2022-11-02 20:39:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:28,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:28,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:28,264 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:28,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:39:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:28,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-02 20:39:28,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:28,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 20:39:28,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:28,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 31 [2022-11-02 20:39:28,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 28 [2022-11-02 20:39:28,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 11 [2022-11-02 20:39:28,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 11 [2022-11-02 20:39:29,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:29,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 171 treesize of output 162 [2022-11-02 20:39:29,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 162 treesize of output 154 [2022-11-02 20:39:29,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:29,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:39:29,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 197 [2022-11-02 20:39:29,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:39:29,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2022-11-02 20:39:29,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 106 treesize of output 20 [2022-11-02 20:39:30,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:39:30,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:39:30,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 17 [2022-11-02 20:39:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:30,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:49,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:49,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411766564] [2022-11-02 20:39:49,716 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:39:49,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285968874] [2022-11-02 20:39:49,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285968874] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:49,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:39:49,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-11-02 20:39:49,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351553364] [2022-11-02 20:39:49,717 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:49,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 20:39:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 20:39:49,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=744, Unknown=5, NotChecked=0, Total=870 [2022-11-02 20:39:49,720 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 16 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:39:49,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:49,980 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-11-02 20:39:49,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:39:49,981 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 16 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2022-11-02 20:39:49,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:49,988 INFO L225 Difference]: With dead ends: 57 [2022-11-02 20:39:49,990 INFO L226 Difference]: Without dead ends: 53 [2022-11-02 20:39:49,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=138, Invalid=849, Unknown=5, NotChecked=0, Total=992 [2022-11-02 20:39:49,995 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:49,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 215 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2022-11-02 20:39:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-02 20:39:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2022-11-02 20:39:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 20:39:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-11-02 20:39:50,015 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 36 [2022-11-02 20:39:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:50,016 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-11-02 20:39:50,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 16 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-02 20:39:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-11-02 20:39:50,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 20:39:50,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:50,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:50,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:50,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:50,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:50,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:50,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1846883197, now seen corresponding path program 2 times [2022-11-02 20:39:50,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:50,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628173750] [2022-11-02 20:39:50,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:50,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:50,261 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:39:50,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569203168] [2022-11-02 20:39:50,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:39:50,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:50,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:50,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:50,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:39:50,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:39:50,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:39:50,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:39:50,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:39:50,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:39:50,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:50,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628173750] [2022-11-02 20:39:50,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:39:50,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569203168] [2022-11-02 20:39:50,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569203168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:50,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:39:50,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 20:39:50,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299285034] [2022-11-02 20:39:50,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:50,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:39:50,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:50,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:39:50,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:39:50,570 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-02 20:39:50,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:50,984 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2022-11-02 20:39:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:39:50,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 38 [2022-11-02 20:39:50,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:50,986 INFO L225 Difference]: With dead ends: 89 [2022-11-02 20:39:50,986 INFO L226 Difference]: Without dead ends: 85 [2022-11-02 20:39:50,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:39:50,987 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 58 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:50,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 145 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:39:50,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-02 20:39:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 70. [2022-11-02 20:39:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-02 20:39:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2022-11-02 20:39:51,005 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 38 [2022-11-02 20:39:51,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:51,005 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2022-11-02 20:39:51,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-02 20:39:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2022-11-02 20:39:51,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 20:39:51,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:51,007 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:51,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:51,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:51,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:39:51,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:51,232 INFO L85 PathProgramCache]: Analyzing trace with hash 383375294, now seen corresponding path program 1 times [2022-11-02 20:39:51,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:51,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044760251] [2022-11-02 20:39:51,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:51,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:51,262 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:39:51,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632010755] [2022-11-02 20:39:51,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:51,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:51,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:51,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:51,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:39:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:51,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-02 20:39:51,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:51,571 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 20:39:51,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2022-11-02 20:39:52,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:52,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 178 treesize of output 169 [2022-11-02 20:39:52,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 169 treesize of output 161 [2022-11-02 20:39:52,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:52,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:39:52,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 201 [2022-11-02 20:39:52,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:39:52,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2022-11-02 20:39:52,270 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-02 20:39:52,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:52,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:39:52,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:39:52,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:39:52,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 160 [2022-11-02 20:39:52,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 149 treesize of output 143 [2022-11-02 20:39:52,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 197 [2022-11-02 20:39:52,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 106 treesize of output 20 [2022-11-02 20:39:53,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:39:53,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:39:53,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 17 [2022-11-02 20:39:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:39:53,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:14,899 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse46 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse47 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse48 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse47 .cse48 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse47 .cse48)))))) (.cse12 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse23 (* 4 .cse46)) (.cse24 (<= .cse46 2147483647))) (and (or (let ((.cse11 (+ (- 17179869184) .cse23 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (and (forall ((v_ArrVal_228 (Array Int Int)) (|v_ULTIMATE.start_main_~index~0#1_15| Int) (v_ArrVal_223 (Array Int Int))) (let ((.cse6 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |v_ULTIMATE.start_main_~index~0#1_15|)) 4294967296))) (or (let ((.cse1 (let ((.cse7 (store .cse10 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_228) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse11 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse11) .cse12))))) (store .cse7 |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse8 (select .cse7 |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse9 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 4 |v_ULTIMATE.start_main_~index~0#1_15|)))) (store .cse8 .cse9 (+ (select .cse8 .cse9) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|)))))))) (let ((.cse2 (let ((.cse4 (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| (* .cse6 4)))) (store .cse4 .cse5 (+ (* |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse4 .cse5)))))) (= (+ (let ((.cse0 (select (select (store .cse1 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse0 .cse0)) |c_ULTIMATE.start_main_~sum1~0#1|) (+ (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse3 .cse3)) |c_ULTIMATE.start_main_~sum2~0#1|)))) (< |v_ULTIMATE.start_main_~index~0#1_15| 0) (not (<= .cse6 2147483647)) (<= c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~index~0#1_15|)))) (forall ((v_ArrVal_228 (Array Int Int)) (|v_ULTIMATE.start_main_~index~0#1_15| Int) (v_ArrVal_223 (Array Int Int))) (let ((.cse13 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |v_ULTIMATE.start_main_~index~0#1_15|)) 4294967296))) (or (< |v_ULTIMATE.start_main_~index~0#1_15| 0) (<= .cse13 2147483647) (let ((.cse17 (let ((.cse20 (store .cse10 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_228) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse11 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse11) .cse12))))) (store .cse20 |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse21 (select .cse20 |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse22 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 4 |v_ULTIMATE.start_main_~index~0#1_15|)))) (store .cse21 .cse22 (+ (select .cse21 .cse22) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|)))))))) (let ((.cse15 (let ((.cse18 (select .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse19 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| (* .cse13 4)))) (store .cse18 .cse19 (+ (* |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse18 .cse19)))))) (= (+ |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse14 (select .cse15 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse14 .cse14))) (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse15) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse16 .cse16)))))) (<= c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~index~0#1_15|)))))) .cse24) (or (let ((.cse35 (+ .cse23 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (and (forall ((v_ArrVal_228 (Array Int Int)) (|v_ULTIMATE.start_main_~index~0#1_15| Int) (v_ArrVal_223 (Array Int Int))) (let ((.cse25 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |v_ULTIMATE.start_main_~index~0#1_15|)) 4294967296))) (or (< |v_ULTIMATE.start_main_~index~0#1_15| 0) (not (<= .cse25 2147483647)) (let ((.cse27 (let ((.cse32 (store .cse10 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_228) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse35 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse35) .cse12))))) (store .cse32 |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse33 (select .cse32 |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse34 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 4 |v_ULTIMATE.start_main_~index~0#1_15|)))) (store .cse33 .cse34 (+ (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse33 .cse34)))))))) (let ((.cse28 (let ((.cse30 (select .cse27 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse31 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| (* .cse25 4)))) (store .cse30 .cse31 (+ (* |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse30 .cse31)))))) (= (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse26 (select (select (store .cse27 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse28) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse26 .cse26))) (+ (let ((.cse29 (select .cse28 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse29 .cse29)) |c_ULTIMATE.start_main_~sum2~0#1|)))) (<= c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~index~0#1_15|)))) (forall ((v_ArrVal_228 (Array Int Int)) (|v_ULTIMATE.start_main_~index~0#1_15| Int) (v_ArrVal_223 (Array Int Int))) (let ((.cse42 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |v_ULTIMATE.start_main_~index~0#1_15|)) 4294967296))) (or (let ((.cse39 (let ((.cse43 (store .cse10 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_228) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse35 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse35) .cse12))))) (store .cse43 |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse44 (select .cse43 |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse45 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 4 |v_ULTIMATE.start_main_~index~0#1_15|)))) (store .cse44 .cse45 (+ (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse44 .cse45)))))))) (let ((.cse37 (let ((.cse40 (select .cse39 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse41 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| (* .cse42 4)))) (store .cse40 .cse41 (+ (* |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse40 .cse41)))))) (= (+ |c_ULTIMATE.start_main_~sum2~0#1| (let ((.cse36 (select .cse37 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse36 .cse36))) (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse38 (select (select (store .cse39 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse37) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse38 .cse38)))))) (< |v_ULTIMATE.start_main_~index~0#1_15| 0) (<= .cse42 2147483647) (<= c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~index~0#1_15|)))))) (not .cse24))))) is different from true [2022-11-02 20:40:21,066 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (and (forall ((|ULTIMATE.start_main_~index~0#1| Int)) (let ((.cse0 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |ULTIMATE.start_main_~index~0#1|)) 4294967296))) (or (<= c_~ARR_SIZE~0 |ULTIMATE.start_main_~index~0#1|) (not (<= .cse0 2147483647)) (< |ULTIMATE.start_main_~index~0#1| 0) (forall ((v_ArrVal_228 (Array Int Int)) (|v_ULTIMATE.start_main_~index~0#1_15| Int) (v_ArrVal_223 (Array Int Int))) (let ((.cse7 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |v_ULTIMATE.start_main_~index~0#1_15|)) 4294967296))) (or (< |v_ULTIMATE.start_main_~index~0#1_15| 0) (let ((.cse4 (let ((.cse8 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse12 (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse11 .cse12 (+ (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~index~0#1|) (select .cse11 .cse12))))) |c_ULTIMATE.start_main_~#array2~0#1.base| (let ((.cse13 (+ (* .cse0 4) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_228) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse13 (+ (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~index~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse13))))))) (store .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse10 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 4 |v_ULTIMATE.start_main_~index~0#1_15|)))) (store .cse9 .cse10 (+ (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse9 .cse10)))))))) (let ((.cse2 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse6 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| (* .cse7 4)))) (store .cse5 .cse6 (+ (* |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse5 .cse6)))))) (= (+ (let ((.cse1 (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse1 .cse1)) |c_ULTIMATE.start_main_~sum2~0#1|) (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse3 .cse3)))))) (not (<= .cse7 2147483647)) (<= c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~index~0#1_15|))))))) (forall ((|ULTIMATE.start_main_~index~0#1| Int)) (let ((.cse14 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |ULTIMATE.start_main_~index~0#1|)) 4294967296))) (or (<= .cse14 2147483647) (<= c_~ARR_SIZE~0 |ULTIMATE.start_main_~index~0#1|) (< |ULTIMATE.start_main_~index~0#1| 0) (forall ((v_ArrVal_228 (Array Int Int)) (|v_ULTIMATE.start_main_~index~0#1_15| Int) (v_ArrVal_223 (Array Int Int))) (let ((.cse15 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |v_ULTIMATE.start_main_~index~0#1_15|)) 4294967296))) (or (< |v_ULTIMATE.start_main_~index~0#1_15| 0) (<= .cse15 2147483647) (<= c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~index~0#1_15|) (let ((.cse19 (let ((.cse22 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse25 (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse11 .cse25 (+ (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~index~0#1|) (select .cse11 .cse25))))) |c_ULTIMATE.start_main_~#array2~0#1.base| (let ((.cse26 (+ (* .cse14 4) (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_228) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse26 (+ (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~index~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse26))))))) (store .cse22 |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse23 (select .cse22 |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse24 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 4 |v_ULTIMATE.start_main_~index~0#1_15|)))) (store .cse23 .cse24 (+ (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse23 .cse24)))))))) (let ((.cse17 (let ((.cse20 (select .cse19 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse21 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| (* .cse15 4)))) (store .cse20 .cse21 (+ (* |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse20 .cse21)))))) (= (+ (let ((.cse16 (select .cse17 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse16 .cse16)) |c_ULTIMATE.start_main_~sum2~0#1|) (+ (let ((.cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse17) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse18 .cse18)) |c_ULTIMATE.start_main_~sum1~0#1|)))))))))) (forall ((|ULTIMATE.start_main_~index~0#1| Int)) (let ((.cse27 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |ULTIMATE.start_main_~index~0#1|)) 4294967296))) (or (<= c_~ARR_SIZE~0 |ULTIMATE.start_main_~index~0#1|) (not (<= .cse27 2147483647)) (< |ULTIMATE.start_main_~index~0#1| 0) (forall ((v_ArrVal_228 (Array Int Int)) (|v_ULTIMATE.start_main_~index~0#1_15| Int) (v_ArrVal_223 (Array Int Int))) (let ((.cse34 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |v_ULTIMATE.start_main_~index~0#1_15|)) 4294967296))) (or (< |v_ULTIMATE.start_main_~index~0#1_15| 0) (let ((.cse29 (let ((.cse35 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse38 (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse11 .cse38 (+ (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~index~0#1|) (select .cse11 .cse38))))) |c_ULTIMATE.start_main_~#array2~0#1.base| (let ((.cse39 (+ (* .cse27 4) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_228) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse39 (+ (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~index~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse39))))))) (store .cse35 |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse36 (select .cse35 |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse37 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 4 |v_ULTIMATE.start_main_~index~0#1_15|)))) (store .cse36 .cse37 (+ (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse36 .cse37)))))))) (let ((.cse30 (let ((.cse32 (select .cse29 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse33 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| (* .cse34 4)))) (store .cse32 .cse33 (+ (* |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse32 .cse33)))))) (= (+ (let ((.cse28 (select (select (store .cse29 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse30) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse28 .cse28)) |c_ULTIMATE.start_main_~sum1~0#1|) (+ (let ((.cse31 (select .cse30 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse31 .cse31)) |c_ULTIMATE.start_main_~sum2~0#1|)))) (<= .cse34 2147483647) (<= c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~index~0#1_15|))))))) (forall ((|ULTIMATE.start_main_~index~0#1| Int)) (let ((.cse40 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |ULTIMATE.start_main_~index~0#1|)) 4294967296))) (or (<= .cse40 2147483647) (<= c_~ARR_SIZE~0 |ULTIMATE.start_main_~index~0#1|) (< |ULTIMATE.start_main_~index~0#1| 0) (forall ((v_ArrVal_228 (Array Int Int)) (|v_ULTIMATE.start_main_~index~0#1_15| Int) (v_ArrVal_223 (Array Int Int))) (let ((.cse47 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |v_ULTIMATE.start_main_~index~0#1_15|)) 4294967296))) (or (< |v_ULTIMATE.start_main_~index~0#1_15| 0) (let ((.cse44 (let ((.cse48 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse51 (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse11 .cse51 (+ (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~index~0#1|) (select .cse11 .cse51))))) |c_ULTIMATE.start_main_~#array2~0#1.base| (let ((.cse52 (+ (* .cse40 4) (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_228) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse52 (+ (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~index~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse52))))))) (store .cse48 |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse49 (select .cse48 |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse50 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 4 |v_ULTIMATE.start_main_~index~0#1_15|)))) (store .cse49 .cse50 (+ (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse49 .cse50)))))))) (let ((.cse42 (let ((.cse45 (select .cse44 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse46 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| (* .cse47 4)))) (store .cse45 .cse46 (+ (* |c_ULTIMATE.start_main_~num~0#1| |v_ULTIMATE.start_main_~index~0#1_15|) (select .cse45 .cse46)))))) (= (+ (let ((.cse41 (select .cse42 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse41 .cse41)) |c_ULTIMATE.start_main_~sum2~0#1|) (+ |c_ULTIMATE.start_main_~sum1~0#1| (let ((.cse43 (select (select (store .cse44 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse42) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse43 .cse43)))))) (not (<= .cse47 2147483647)) (<= c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~index~0#1_15|))))))))) is different from true [2022-11-02 20:40:21,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:21,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044760251] [2022-11-02 20:40:21,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:40:21,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632010755] [2022-11-02 20:40:21,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632010755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:21,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:21,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-02 20:40:21,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370679109] [2022-11-02 20:40:21,070 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:21,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:40:21,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:21,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:40:21,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=977, Unknown=3, NotChecked=130, Total=1260 [2022-11-02 20:40:21,073 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 22 states, 19 states have (on average 1.631578947368421) internal successors, (31), 17 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:40:21,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:21,648 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2022-11-02 20:40:21,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:40:21,649 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.631578947368421) internal successors, (31), 17 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 44 [2022-11-02 20:40:21,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:21,650 INFO L225 Difference]: With dead ends: 88 [2022-11-02 20:40:21,650 INFO L226 Difference]: Without dead ends: 84 [2022-11-02 20:40:21,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=223, Invalid=1264, Unknown=3, NotChecked=150, Total=1640 [2022-11-02 20:40:21,652 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:21,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 234 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2022-11-02 20:40:21,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-02 20:40:21,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2022-11-02 20:40:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 46 states have internal predecessors, (50), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-02 20:40:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2022-11-02 20:40:21,665 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 44 [2022-11-02 20:40:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:21,666 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2022-11-02 20:40:21,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.631578947368421) internal successors, (31), 17 states have internal predecessors, (31), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 20:40:21,666 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2022-11-02 20:40:21,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:40:21,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:21,667 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:21,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:21,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:40:21,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:21,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1867659643, now seen corresponding path program 3 times [2022-11-02 20:40:21,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:21,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84493296] [2022-11-02 20:40:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:21,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:21,915 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:40:21,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714657649] [2022-11-02 20:40:21,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:40:21,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:21,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:21,927 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:21,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:40:22,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:40:22,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:40:22,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:40:22,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:40:22,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:40:22,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:22,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84493296] [2022-11-02 20:40:22,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:40:22,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714657649] [2022-11-02 20:40:22,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714657649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:22,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:22,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 20:40:22,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148605716] [2022-11-02 20:40:22,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:22,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:40:22,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:22,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:40:22,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:40:22,240 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-02 20:40:22,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:40:22,411 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2022-11-02 20:40:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:22,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 48 [2022-11-02 20:40:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:40:22,412 INFO L225 Difference]: With dead ends: 83 [2022-11-02 20:40:22,412 INFO L226 Difference]: Without dead ends: 48 [2022-11-02 20:40:22,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:40:22,413 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 51 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:40:22,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 106 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:40:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-02 20:40:22,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2022-11-02 20:40:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:40:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-11-02 20:40:22,420 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 48 [2022-11-02 20:40:22,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:40:22,421 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-11-02 20:40:22,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-02 20:40:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-02 20:40:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:40:22,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:40:22,422 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:22,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:22,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:40:22,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:40:22,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:22,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1239986503, now seen corresponding path program 4 times [2022-11-02 20:40:22,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:22,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545516598] [2022-11-02 20:40:22,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:22,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:22,652 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:40:22,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851156299] [2022-11-02 20:40:22,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:40:22,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:22,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:22,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:22,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:40:23,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:40:23,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:40:23,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-02 20:40:23,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:23,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 20:40:23,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:23,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 31 [2022-11-02 20:40:23,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 11 [2022-11-02 20:40:23,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 26 [2022-11-02 20:40:23,295 INFO L356 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-02 20:40:23,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 54 treesize of output 43 [2022-11-02 20:40:23,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:23,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 189 treesize of output 176 [2022-11-02 20:40:23,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 171 treesize of output 161 [2022-11-02 20:40:24,022 INFO L356 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-02 20:40:24,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 137 treesize of output 212 [2022-11-02 20:40:24,128 INFO L356 Elim1Store]: treesize reduction 57, result has 31.3 percent of original size [2022-11-02 20:40:24,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 45 [2022-11-02 20:40:24,671 INFO L356 Elim1Store]: treesize reduction 452, result has 29.3 percent of original size [2022-11-02 20:40:24,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 285 treesize of output 503 [2022-11-02 20:40:25,779 INFO L356 Elim1Store]: treesize reduction 240, result has 5.1 percent of original size [2022-11-02 20:40:25,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 227 treesize of output 73 [2022-11-02 20:40:25,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:40:25,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:25,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:25,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:40:25,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:40:25,830 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:40:25,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 185 treesize of output 50 [2022-11-02 20:40:25,919 INFO L356 Elim1Store]: treesize reduction 261, result has 10.0 percent of original size [2022-11-02 20:40:25,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 240 treesize of output 92 [2022-11-02 20:40:58,863 INFO L356 Elim1Store]: treesize reduction 96, result has 76.1 percent of original size [2022-11-02 20:40:58,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 186 treesize of output 380 [2022-11-02 20:41:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:41:08,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:36,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:36,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545516598] [2022-11-02 20:41:36,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:41:36,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851156299] [2022-11-02 20:41:36,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851156299] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:36,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:36,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-02 20:41:36,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901900586] [2022-11-02 20:41:36,434 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:36,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:41:36,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:36,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:41:36,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1920, Unknown=16, NotChecked=0, Total=2162 [2022-11-02 20:41:36,437 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 24 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:41:41,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:41,895 INFO L93 Difference]: Finished difference Result 95 states and 107 transitions. [2022-11-02 20:41:41,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:41:41,896 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 24 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2022-11-02 20:41:41,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:41,897 INFO L225 Difference]: With dead ends: 95 [2022-11-02 20:41:41,898 INFO L226 Difference]: Without dead ends: 91 [2022-11-02 20:41:41,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 59.6s TimeCoverageRelationStatistics Valid=291, Invalid=2449, Unknown=16, NotChecked=0, Total=2756 [2022-11-02 20:41:41,900 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 55 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 386 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:41,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 446 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 426 Invalid, 0 Unknown, 386 Unchecked, 1.1s Time] [2022-11-02 20:41:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-02 20:41:41,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 81. [2022-11-02 20:41:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-02 20:41:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2022-11-02 20:41:41,919 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 50 [2022-11-02 20:41:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:41,920 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2022-11-02 20:41:41,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 24 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-02 20:41:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2022-11-02 20:41:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-02 20:41:41,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:41,922 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:41,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:42,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:42,136 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1609305207, now seen corresponding path program 5 times [2022-11-02 20:41:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:42,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570150357] [2022-11-02 20:41:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:42,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:42,177 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:41:42,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459000517] [2022-11-02 20:41:42,183 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:41:42,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:42,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:42,185 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:42,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:41:42,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-02 20:41:42,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:41:42,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:41:42,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:41:42,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:41:42,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:42,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570150357] [2022-11-02 20:41:42,697 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:41:42,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459000517] [2022-11-02 20:41:42,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459000517] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:41:42,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:41:42,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-02 20:41:42,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777878310] [2022-11-02 20:41:42,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:41:42,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:41:42,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:41:42,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:41:42,699 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-02 20:41:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:43,386 INFO L93 Difference]: Finished difference Result 128 states and 146 transitions. [2022-11-02 20:41:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:41:43,387 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 52 [2022-11-02 20:41:43,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:43,389 INFO L225 Difference]: With dead ends: 128 [2022-11-02 20:41:43,389 INFO L226 Difference]: Without dead ends: 124 [2022-11-02 20:41:43,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:41:43,390 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 56 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:43,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 206 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:41:43,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-02 20:41:43,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2022-11-02 20:41:43,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 82 states have internal predecessors, (88), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-02 20:41:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2022-11-02 20:41:43,419 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 52 [2022-11-02 20:41:43,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:43,419 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2022-11-02 20:41:43,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-02 20:41:43,420 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2022-11-02 20:41:43,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:41:43,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:43,422 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:43,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:43,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:43,643 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:43,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:43,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1113507012, now seen corresponding path program 2 times [2022-11-02 20:41:43,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:43,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734411984] [2022-11-02 20:41:43,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:43,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:43,668 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:41:43,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394149264] [2022-11-02 20:41:43,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:41:43,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:43,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:43,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:43,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c20e8773-606c-40d3-b455-c89b33679bb3/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:41:44,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:41:44,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:41:44,173 WARN L261 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-02 20:41:44,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:44,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-02 20:41:44,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:44,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 31 [2022-11-02 20:41:44,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 28 [2022-11-02 20:41:44,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 11 [2022-11-02 20:41:44,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 12 treesize of output 11 [2022-11-02 20:41:44,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 53 [2022-11-02 20:41:45,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:45,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 196 treesize of output 183 [2022-11-02 20:41:45,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 178 treesize of output 168 [2022-11-02 20:41:45,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:45,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:45,502 INFO L356 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2022-11-02 20:41:45,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 216 [2022-11-02 20:41:45,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:45,617 INFO L356 Elim1Store]: treesize reduction 63, result has 29.2 percent of original size [2022-11-02 20:41:45,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 48 [2022-11-02 20:41:45,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:45,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:45,812 INFO L356 Elim1Store]: treesize reduction 118, result has 21.9 percent of original size [2022-11-02 20:41:45,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 145 treesize of output 79 [2022-11-02 20:41:47,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:47,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:47,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:47,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:47,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:41:47,551 INFO L356 Elim1Store]: treesize reduction 90, result has 26.8 percent of original size [2022-11-02 20:41:47,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 262 treesize of output 233 [2022-11-02 20:41:47,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 227 treesize of output 211 [2022-11-02 20:41:47,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:47,627 INFO L356 Elim1Store]: treesize reduction 146, result has 0.7 percent of original size [2022-11-02 20:41:47,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 169 treesize of output 234 [2022-11-02 20:41:47,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:41:47,918 INFO L356 Elim1Store]: treesize reduction 118, result has 36.2 percent of original size [2022-11-02 20:41:47,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 229 treesize of output 165 [2022-11-02 20:42:02,520 WARN L234 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:42:09,126 WARN L234 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-02 20:42:21,150 INFO L356 Elim1Store]: treesize reduction 334, result has 51.2 percent of original size [2022-11-02 20:42:21,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 246 treesize of output 480