./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/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_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --- 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 20:17:53,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:17:53,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:17:53,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:17:53,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:17:53,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:17:53,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:17:53,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:17:53,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:17:53,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:17:53,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:17:53,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:17:53,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:17:53,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:17:53,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:17:53,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:17:53,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:17:53,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:17:53,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:17:53,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:17:53,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:17:53,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:17:53,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:17:53,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:17:53,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:17:53,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:17:53,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:17:53,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:17:53,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:17:53,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:17:53,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:17:53,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:17:53,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:17:53,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:17:53,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:17:53,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:17:53,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:17:53,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:17:53,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:17:53,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:17:53,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:17:53,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:17:53,145 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:17:53,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:17:53,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:17:53,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:17:53,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:17:53,147 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:17:53,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:17:53,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:17:53,149 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:17:53,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:17:53,149 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:17:53,150 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:17:53,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:17:53,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:17:53,150 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:17:53,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:17:53,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:17:53,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:17:53,151 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:17:53,152 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:17:53,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:17:53,152 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:17:53,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:17:53,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:17:53,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:17:53,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:17:53,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:17:53,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:17:53,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:17:53,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:17:53,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:17:53,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:17:53,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:17:53,155 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_7ab880a2-47ca-4e32-b41a-bdec3fc15425/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e [2022-11-02 20:17:53,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:17:53,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:17:53,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:17:53,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:17:53,473 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:17:53,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-02 20:17:53,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/data/5f8bd9bb6/ea4cf06a58d14febb22966650d90acc5/FLAG9465beec2 [2022-11-02 20:17:54,202 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:17:54,203 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/sv-benchmarks/c/goblint-regression/09-regions_21-arrayloop2_nr.i [2022-11-02 20:17:54,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/data/5f8bd9bb6/ea4cf06a58d14febb22966650d90acc5/FLAG9465beec2 [2022-11-02 20:17:54,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/data/5f8bd9bb6/ea4cf06a58d14febb22966650d90acc5 [2022-11-02 20:17:54,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:17:54,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:17:54,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:17:54,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:17:54,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:17:54,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:17:54" (1/1) ... [2022-11-02 20:17:54,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2b2183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:54, skipping insertion in model container [2022-11-02 20:17:54,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:17:54" (1/1) ... [2022-11-02 20:17:54,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:17:54,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:17:55,088 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:17:55,088 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:17:55,089 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:17:55,089 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:17:55,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:17:55,158 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:17:55,210 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:17:55,212 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:17:55,213 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:17:55,214 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:17:55,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:17:55,300 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:17:55,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55 WrapperNode [2022-11-02 20:17:55,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:17:55,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:17:55,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:17:55,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:17:55,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (1/1) ... [2022-11-02 20:17:55,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (1/1) ... [2022-11-02 20:17:55,362 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 127 [2022-11-02 20:17:55,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:17:55,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:17:55,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:17:55,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:17:55,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (1/1) ... [2022-11-02 20:17:55,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (1/1) ... [2022-11-02 20:17:55,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (1/1) ... [2022-11-02 20:17:55,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (1/1) ... [2022-11-02 20:17:55,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (1/1) ... [2022-11-02 20:17:55,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (1/1) ... [2022-11-02 20:17:55,406 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (1/1) ... [2022-11-02 20:17:55,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (1/1) ... [2022-11-02 20:17:55,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:17:55,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:17:55,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:17:55,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:17:55,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (1/1) ... [2022-11-02 20:17:55,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:17:55,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:55,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:17:55,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:17:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-02 20:17:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-02 20:17:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:17:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:17:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:17:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:17:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:17:55,524 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:17:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:17:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:17:55,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:17:55,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:17:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:17:55,527 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:17:55,726 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:17:55,728 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:17:56,085 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:17:56,093 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:17:56,093 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:17:56,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:17:56 BoogieIcfgContainer [2022-11-02 20:17:56,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:17:56,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:17:56,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:17:56,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:17:56,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:17:54" (1/3) ... [2022-11-02 20:17:56,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c9e91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:17:56, skipping insertion in model container [2022-11-02 20:17:56,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:17:55" (2/3) ... [2022-11-02 20:17:56,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c9e91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:17:56, skipping insertion in model container [2022-11-02 20:17:56,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:17:56" (3/3) ... [2022-11-02 20:17:56,104 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2022-11-02 20:17:56,113 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:17:56,123 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:17:56,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-02 20:17:56,124 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:17:56,337 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:17:56,403 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:17:56,421 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 203 transitions, 416 flow [2022-11-02 20:17:56,432 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 203 transitions, 416 flow [2022-11-02 20:17:56,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 203 transitions, 416 flow [2022-11-02 20:17:56,555 INFO L130 PetriNetUnfolder]: 14/201 cut-off events. [2022-11-02 20:17:56,555 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:17:56,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 201 events. 14/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 511 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-11-02 20:17:56,571 INFO L118 LiptonReduction]: Number of co-enabled transitions 7600 [2022-11-02 20:19:07,245 WARN L234 SmtUtils]: Spent 21.36s on a formula simplification. DAG size of input: 182 DAG size of output: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:19:16,448 WARN L234 SmtUtils]: Spent 9.20s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:19:35,820 WARN L234 SmtUtils]: Spent 19.37s on a formula simplification. DAG size of input: 182 DAG size of output: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:19:45,899 WARN L234 SmtUtils]: Spent 10.08s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:19:57,740 WARN L234 SmtUtils]: Spent 11.67s on a formula simplification. DAG size of input: 184 DAG size of output: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:20:06,882 WARN L234 SmtUtils]: Spent 9.14s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:20:39,649 WARN L234 SmtUtils]: Spent 32.76s on a formula simplification. DAG size of input: 182 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:20:59,028 WARN L234 SmtUtils]: Spent 19.37s on a formula simplification that was a NOOP. DAG size: 179 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-02 20:20:59,033 INFO L133 LiptonReduction]: Checked pairs total: 7934 [2022-11-02 20:20:59,033 INFO L135 LiptonReduction]: Total number of compositions: 208 [2022-11-02 20:20:59,042 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 41 transitions, 92 flow [2022-11-02 20:20:59,086 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:59,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:20:59,114 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=FINITE_AUTOMATA, 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;@201798b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:20:59,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-02 20:20:59,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:59,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:20:59,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:59,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:20:59,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:20:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:59,133 INFO L85 PathProgramCache]: Analyzing trace with hash 676146, now seen corresponding path program 1 times [2022-11-02 20:20:59,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:59,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742726629] [2022-11-02 20:20:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:59,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:59,332 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:20:59,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457367038] [2022-11-02 20:20:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:59,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:20:59,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:20:59,336 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:20:59,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:20:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:59,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:20:59,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:59,627 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 20:20:59,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:59,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:59,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742726629] [2022-11-02 20:20:59,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:20:59,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457367038] [2022-11-02 20:20:59,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457367038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:59,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:59,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:20:59,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195049056] [2022-11-02 20:20:59,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:59,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:59,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:59,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:59,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:59,684 INFO L87 Difference]: Start difference. First operand has 272 states, 242 states have (on average 2.9008264462809916) internal successors, (702), 271 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:00,057 INFO L93 Difference]: Finished difference Result 534 states and 1393 transitions. [2022-11-02 20:21:00,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:21:00,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 20:21:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:00,085 INFO L225 Difference]: With dead ends: 534 [2022-11-02 20:21:00,085 INFO L226 Difference]: Without dead ends: 534 [2022-11-02 20:21:00,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:21:00,093 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:00,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:21:00,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-02 20:21:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 270. [2022-11-02 20:21:00,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 242 states have (on average 2.8925619834710745) internal successors, (700), 269 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 700 transitions. [2022-11-02 20:21:00,196 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 700 transitions. Word has length 3 [2022-11-02 20:21:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:00,197 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 700 transitions. [2022-11-02 20:21:00,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 700 transitions. [2022-11-02 20:21:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:21:00,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:00,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:21:00,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:00,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-02 20:21:00,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:21:00,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:00,423 INFO L85 PathProgramCache]: Analyzing trace with hash 676085, now seen corresponding path program 1 times [2022-11-02 20:21:00,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:00,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109096723] [2022-11-02 20:21:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:00,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:00,634 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 20:21:00,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:00,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109096723] [2022-11-02 20:21:00,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109096723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:00,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:00,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:21:00,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412699703] [2022-11-02 20:21:00,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:00,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:21:00,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:00,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:21:00,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:21:00,638 INFO L87 Difference]: Start difference. First operand 270 states and 700 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:00,990 INFO L93 Difference]: Finished difference Result 271 states and 701 transitions. [2022-11-02 20:21:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:21:00,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 20:21:00,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:00,994 INFO L225 Difference]: With dead ends: 271 [2022-11-02 20:21:00,995 INFO L226 Difference]: Without dead ends: 271 [2022-11-02 20:21:00,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:21:00,997 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:00,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:21:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-02 20:21:01,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2022-11-02 20:21:01,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 243 states have (on average 2.8847736625514404) internal successors, (701), 270 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 701 transitions. [2022-11-02 20:21:01,017 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 701 transitions. Word has length 3 [2022-11-02 20:21:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:01,017 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 701 transitions. [2022-11-02 20:21:01,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 701 transitions. [2022-11-02 20:21:01,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:21:01,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:01,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:21:01,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:21:01,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:21:01,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:01,020 INFO L85 PathProgramCache]: Analyzing trace with hash 20961183, now seen corresponding path program 1 times [2022-11-02 20:21:01,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:01,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649840525] [2022-11-02 20:21:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:01,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:01,063 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:01,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561006074] [2022-11-02 20:21:01,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:01,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:01,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:01,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:01,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:21:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:01,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:21:01,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:01,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:01,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:01,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:01,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649840525] [2022-11-02 20:21:01,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:01,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561006074] [2022-11-02 20:21:01,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561006074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:01,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:01,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-02 20:21:01,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506763410] [2022-11-02 20:21:01,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:01,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:21:01,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:01,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:21:01,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:21:01,360 INFO L87 Difference]: Start difference. First operand 271 states and 701 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:01,876 INFO L93 Difference]: Finished difference Result 278 states and 710 transitions. [2022-11-02 20:21:01,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:21:01,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:21:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:01,881 INFO L225 Difference]: With dead ends: 278 [2022-11-02 20:21:01,881 INFO L226 Difference]: Without dead ends: 278 [2022-11-02 20:21:01,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:21:01,882 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:01,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:21:01,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-02 20:21:01,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2022-11-02 20:21:01,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 246 states have (on average 2.886178861788618) internal successors, (710), 273 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 710 transitions. [2022-11-02 20:21:01,937 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 710 transitions. Word has length 4 [2022-11-02 20:21:01,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:01,937 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 710 transitions. [2022-11-02 20:21:01,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:01,938 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 710 transitions. [2022-11-02 20:21:01,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:21:01,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:01,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:21:01,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:02,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:02,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:21:02,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:02,168 INFO L85 PathProgramCache]: Analyzing trace with hash 20961124, now seen corresponding path program 1 times [2022-11-02 20:21:02,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:02,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072438892] [2022-11-02 20:21:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:02,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:02,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:02,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779081468] [2022-11-02 20:21:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:02,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:02,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:02,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:02,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:21:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:02,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:21:02,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:21:02,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:02,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:02,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072438892] [2022-11-02 20:21:02,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:02,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779081468] [2022-11-02 20:21:02,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779081468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:02,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:02,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:21:02,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130690899] [2022-11-02 20:21:02,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:02,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:21:02,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:02,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:21:02,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:21:02,483 INFO L87 Difference]: Start difference. First operand 274 states and 710 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:03,050 INFO L93 Difference]: Finished difference Result 280 states and 717 transitions. [2022-11-02 20:21:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:21:03,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:21:03,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:03,054 INFO L225 Difference]: With dead ends: 280 [2022-11-02 20:21:03,054 INFO L226 Difference]: Without dead ends: 280 [2022-11-02 20:21:03,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:21:03,055 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:03,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:21:03,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-02 20:21:03,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-11-02 20:21:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 252 states have (on average 2.8452380952380953) internal successors, (717), 279 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 717 transitions. [2022-11-02 20:21:03,074 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 717 transitions. Word has length 4 [2022-11-02 20:21:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:03,074 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 717 transitions. [2022-11-02 20:21:03,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 717 transitions. [2022-11-02 20:21:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:21:03,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:03,076 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1] [2022-11-02 20:21:03,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:03,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:03,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:21:03,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1718353297, now seen corresponding path program 1 times [2022-11-02 20:21:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:03,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173585705] [2022-11-02 20:21:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:03,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:03,409 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:03,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700573759] [2022-11-02 20:21:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:03,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:03,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:03,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:03,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:21:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:04,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:21:04,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:21:04,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:21:04,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:04,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173585705] [2022-11-02 20:21:04,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:04,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700573759] [2022-11-02 20:21:04,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700573759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:04,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:04,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 20:21:04,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432654507] [2022-11-02 20:21:04,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:04,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:21:04,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:04,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:21:04,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:21:04,216 INFO L87 Difference]: Start difference. First operand 280 states and 717 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:06,344 INFO L93 Difference]: Finished difference Result 308 states and 741 transitions. [2022-11-02 20:21:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:21:06,345 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:21:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:06,348 INFO L225 Difference]: With dead ends: 308 [2022-11-02 20:21:06,348 INFO L226 Difference]: Without dead ends: 308 [2022-11-02 20:21:06,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:21:06,349 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:06,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:21:06,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-02 20:21:06,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 292. [2022-11-02 20:21:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 264 states have (on average 2.8068181818181817) internal successors, (741), 291 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 741 transitions. [2022-11-02 20:21:06,365 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 741 transitions. Word has length 10 [2022-11-02 20:21:06,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:06,365 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 741 transitions. [2022-11-02 20:21:06,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 741 transitions. [2022-11-02 20:21:06,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:21:06,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:06,367 INFO L195 NwaCegarLoop]: trace histogram [11, 2, 1, 1, 1] [2022-11-02 20:21:06,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:06,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:06,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:21:06,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:06,584 INFO L85 PathProgramCache]: Analyzing trace with hash -224314705, now seen corresponding path program 2 times [2022-11-02 20:21:06,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:06,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033069871] [2022-11-02 20:21:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:06,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:06,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:06,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025447515] [2022-11-02 20:21:06,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:21:06,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:06,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:06,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:06,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:21:07,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:21:07,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:07,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:21:07,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:21:08,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:21:08,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:08,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033069871] [2022-11-02 20:21:08,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:08,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025447515] [2022-11-02 20:21:08,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025447515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:08,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:08,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:21:08,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511859150] [2022-11-02 20:21:08,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:08,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:21:08,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:08,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:21:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:21:08,373 INFO L87 Difference]: Start difference. First operand 292 states and 741 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:11,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:11,553 INFO L93 Difference]: Finished difference Result 356 states and 789 transitions. [2022-11-02 20:21:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:21:11,554 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:21:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:11,557 INFO L225 Difference]: With dead ends: 356 [2022-11-02 20:21:11,557 INFO L226 Difference]: Without dead ends: 356 [2022-11-02 20:21:11,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:21:11,558 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 122 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:11,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 0 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 20:21:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-02 20:21:11,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 316. [2022-11-02 20:21:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 288 states have (on average 2.7395833333333335) internal successors, (789), 315 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 789 transitions. [2022-11-02 20:21:11,595 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 789 transitions. Word has length 16 [2022-11-02 20:21:11,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:11,595 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 789 transitions. [2022-11-02 20:21:11,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 789 transitions. [2022-11-02 20:21:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:21:11,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:11,598 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-02 20:21:11,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:11,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:11,813 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:21:11,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:11,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1674699985, now seen corresponding path program 3 times [2022-11-02 20:21:11,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:11,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985589855] [2022-11-02 20:21:11,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:11,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:12,140 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:12,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388796553] [2022-11-02 20:21:12,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:21:12,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:12,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:12,143 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:12,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:21:13,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:21:13,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:13,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:21:13,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-02 20:21:13,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-11-02 20:21:16,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:16,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985589855] [2022-11-02 20:21:16,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:16,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388796553] [2022-11-02 20:21:16,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388796553] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:21:16,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:21:16,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2022-11-02 20:21:16,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708523031] [2022-11-02 20:21:16,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:16,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:21:16,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:21:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=21, Unknown=1, NotChecked=0, Total=42 [2022-11-02 20:21:16,198 INFO L87 Difference]: Start difference. First operand 316 states and 789 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:16,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:16,259 INFO L93 Difference]: Finished difference Result 315 states and 767 transitions. [2022-11-02 20:21:16,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:16,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-02 20:21:16,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:16,263 INFO L225 Difference]: With dead ends: 315 [2022-11-02 20:21:16,263 INFO L226 Difference]: Without dead ends: 315 [2022-11-02 20:21:16,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=20, Invalid=21, Unknown=1, NotChecked=0, Total=42 [2022-11-02 20:21:16,264 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:16,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 93 Unchecked, 0.1s Time] [2022-11-02 20:21:16,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-02 20:21:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-11-02 20:21:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 288 states have (on average 2.6631944444444446) internal successors, (767), 314 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 767 transitions. [2022-11-02 20:21:16,277 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 767 transitions. Word has length 28 [2022-11-02 20:21:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:16,277 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 767 transitions. [2022-11-02 20:21:16,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 767 transitions. [2022-11-02 20:21:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:21:16,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:16,279 INFO L195 NwaCegarLoop]: trace histogram [23, 2, 1, 1, 1] [2022-11-02 20:21:16,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:16,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:21:16,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:21:16,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:16,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1674699967, now seen corresponding path program 1 times [2022-11-02 20:21:16,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:16,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119453752] [2022-11-02 20:21:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:16,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:16,793 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:16,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608971667] [2022-11-02 20:21:16,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:16,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:16,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:16,795 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:16,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:21:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:19,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 5506 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:21:19,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:21:19,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:21:20,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:20,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119453752] [2022-11-02 20:21:20,303 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:20,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608971667] [2022-11-02 20:21:20,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608971667] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:20,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:20,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2022-11-02 20:21:20,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394837487] [2022-11-02 20:21:20,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:20,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:21:20,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:20,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:21:20,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:21:20,307 INFO L87 Difference]: Start difference. First operand 315 states and 767 transitions. Second operand has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:23,337 INFO L93 Difference]: Finished difference Result 359 states and 791 transitions. [2022-11-02 20:21:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:21:23,337 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-02 20:21:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:23,340 INFO L225 Difference]: With dead ends: 359 [2022-11-02 20:21:23,341 INFO L226 Difference]: Without dead ends: 359 [2022-11-02 20:21:23,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 8 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:21:23,344 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 92 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:23,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 0 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-02 20:21:23,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-02 20:21:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 331. [2022-11-02 20:21:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 304 states have (on average 2.601973684210526) internal successors, (791), 330 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 791 transitions. [2022-11-02 20:21:23,382 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 791 transitions. Word has length 28 [2022-11-02 20:21:23,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:23,382 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 791 transitions. [2022-11-02 20:21:23,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 791 transitions. [2022-11-02 20:21:23,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:21:23,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:23,385 INFO L195 NwaCegarLoop]: trace histogram [31, 2, 1, 1, 1] [2022-11-02 20:21:23,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:23,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:23,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:21:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:23,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1871034815, now seen corresponding path program 2 times [2022-11-02 20:21:23,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:23,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979265617] [2022-11-02 20:21:23,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:23,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:23,989 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:23,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171705091] [2022-11-02 20:21:23,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:21:23,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:23,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:23,995 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:24,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:21:27,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:21:27,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:27,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 7378 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:21:27,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-02 20:21:27,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:27,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:27,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979265617] [2022-11-02 20:21:27,294 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:27,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171705091] [2022-11-02 20:21:27,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171705091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:27,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:27,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:27,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538129300] [2022-11-02 20:21:27,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:27,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:21:27,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:27,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:21:27,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:21:27,297 INFO L87 Difference]: Start difference. First operand 331 states and 791 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:27,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:27,791 INFO L93 Difference]: Finished difference Result 329 states and 760 transitions. [2022-11-02 20:21:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:21:27,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 20:21:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:27,795 INFO L225 Difference]: With dead ends: 329 [2022-11-02 20:21:27,795 INFO L226 Difference]: Without dead ends: 329 [2022-11-02 20:21:27,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:21:27,798 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:27,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:21:27,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-02 20:21:27,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-11-02 20:21:27,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 304 states have (on average 2.5) internal successors, (760), 328 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 760 transitions. [2022-11-02 20:21:27,812 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 760 transitions. Word has length 36 [2022-11-02 20:21:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:27,812 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 760 transitions. [2022-11-02 20:21:27,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 760 transitions. [2022-11-02 20:21:27,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 20:21:27,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:27,818 INFO L195 NwaCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:21:27,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:28,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:28,044 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:21:28,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:28,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1735000025, now seen corresponding path program 1 times [2022-11-02 20:21:28,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:28,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202823165] [2022-11-02 20:21:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:28,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:28,584 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:28,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525679501] [2022-11-02 20:21:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:28,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:28,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:28,587 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:28,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:21:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:31,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 7165 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:21:31,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-02 20:21:32,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-02 20:21:32,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:32,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202823165] [2022-11-02 20:21:32,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:32,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525679501] [2022-11-02 20:21:32,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525679501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:32,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:32,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-11-02 20:21:32,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004684330] [2022-11-02 20:21:32,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:32,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:21:32,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:21:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:21:32,138 INFO L87 Difference]: Start difference. First operand 329 states and 760 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:32,516 INFO L93 Difference]: Finished difference Result 393 states and 826 transitions. [2022-11-02 20:21:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:21:32,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-02 20:21:32,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:32,529 INFO L225 Difference]: With dead ends: 393 [2022-11-02 20:21:32,529 INFO L226 Difference]: Without dead ends: 393 [2022-11-02 20:21:32,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:21:32,531 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:32,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:21:32,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-02 20:21:32,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-11-02 20:21:32,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 369 states have (on average 2.238482384823848) internal successors, (826), 392 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 826 transitions. [2022-11-02 20:21:32,551 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 826 transitions. Word has length 39 [2022-11-02 20:21:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:32,552 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 826 transitions. [2022-11-02 20:21:32,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:32,552 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 826 transitions. [2022-11-02 20:21:32,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-02 20:21:32,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:32,564 INFO L195 NwaCegarLoop]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:21:32,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:32,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:32,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:21:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:32,783 INFO L85 PathProgramCache]: Analyzing trace with hash -865086426, now seen corresponding path program 2 times [2022-11-02 20:21:32,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:32,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646996425] [2022-11-02 20:21:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:32,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:34,302 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:34,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382823289] [2022-11-02 20:21:34,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:21:34,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:34,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:34,304 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:34,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:21:44,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:21:44,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:44,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 28345 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:21:44,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-11-02 20:21:44,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-11-02 20:21:45,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:45,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646996425] [2022-11-02 20:21:45,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:21:45,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382823289] [2022-11-02 20:21:45,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382823289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:45,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:45,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-02 20:21:45,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158243315] [2022-11-02 20:21:45,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:45,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:21:45,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:45,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:21:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:21:45,309 INFO L87 Difference]: Start difference. First operand 393 states and 826 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:46,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:46,736 INFO L93 Difference]: Finished difference Result 585 states and 1024 transitions. [2022-11-02 20:21:46,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:21:46,737 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-11-02 20:21:46,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:46,743 INFO L225 Difference]: With dead ends: 585 [2022-11-02 20:21:46,743 INFO L226 Difference]: Without dead ends: 585 [2022-11-02 20:21:46,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:21:46,744 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:46,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:21:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-02 20:21:46,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-11-02 20:21:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 561 states have (on average 1.8253119429590017) internal successors, (1024), 584 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1024 transitions. [2022-11-02 20:21:46,764 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1024 transitions. Word has length 135 [2022-11-02 20:21:46,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:46,767 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 1024 transitions. [2022-11-02 20:21:46,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1024 transitions. [2022-11-02 20:21:46,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-02 20:21:46,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:46,781 INFO L195 NwaCegarLoop]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:21:46,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:47,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:47,007 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-02 20:21:47,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:47,007 INFO L85 PathProgramCache]: Analyzing trace with hash -476192732, now seen corresponding path program 3 times [2022-11-02 20:21:47,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:47,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95038239] [2022-11-02 20:21:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:47,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:50,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:21:50,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914455587] [2022-11-02 20:21:50,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:21:50,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:21:50,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:21:50,845 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:21:51,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab880a2-47ca-4e32-b41a-bdec3fc15425/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process