./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt --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 64bit --witnessprinter.graph.data.programhash cb528549fa76ae8087cf7043645dfa20323a0116 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:22:00,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:22:00,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:22:00,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:22:00,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:22:00,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:22:00,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:22:00,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:22:00,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:22:00,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:22:00,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:22:00,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:22:00,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:22:00,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:22:00,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:22:00,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:22:00,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:22:00,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:22:00,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:22:00,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:22:00,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:22:00,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:22:00,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:22:00,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:22:00,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:22:00,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:22:00,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:22:00,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:22:00,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:22:00,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:22:00,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:22:00,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:22:00,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:22:00,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:22:00,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:22:00,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:22:00,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:22:00,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:22:00,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:22:00,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:22:00,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:22:00,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-13 01:22:00,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:22:00,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:22:00,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:22:00,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:22:00,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:22:00,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:22:00,784 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:22:00,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:22:00,785 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:22:00,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:22:00,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:22:00,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:22:00,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:22:00,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:22:00,786 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 01:22:00,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:22:00,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:22:00,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:22:00,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:22:00,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:22:00,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:22:00,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:22:00,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:22:00,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:22:00,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:22:00,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:22:00,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:22:00,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:22:00,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:22:00,790 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_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb528549fa76ae8087cf7043645dfa20323a0116 [2021-10-13 01:22:01,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:22:01,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:22:01,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:22:01,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:22:01,098 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:22:01,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2021-10-13 01:22:01,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/data/c494321af/36ce804a81ac4567af413e2ba5dabbe8/FLAGfa95e52ec [2021-10-13 01:22:01,614 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:22:01,615 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2021-10-13 01:22:01,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/data/c494321af/36ce804a81ac4567af413e2ba5dabbe8/FLAGfa95e52ec [2021-10-13 01:22:02,027 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/data/c494321af/36ce804a81ac4567af413e2ba5dabbe8 [2021-10-13 01:22:02,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:22:02,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:22:02,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:22:02,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:22:02,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:22:02,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@943619a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02, skipping insertion in model container [2021-10-13 01:22:02,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:22:02,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:22:02,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:22:02,350 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:22:02,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:22:02,411 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:22:02,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02 WrapperNode [2021-10-13 01:22:02,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:22:02,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:22:02,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:22:02,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:22:02,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:22:02,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:22:02,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:22:02,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:22:02,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:22:02,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:22:02,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:22:02,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:22:02,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02" (1/1) ... [2021-10-13 01:22:02,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:22:02,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:22:02,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:22:02,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:22:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2021-10-13 01:22:02,554 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2021-10-13 01:22:02,555 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2021-10-13 01:22:02,555 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2021-10-13 01:22:02,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:22:02,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:22:02,730 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:22:02,731 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 01:22:02,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:22:02 BoogieIcfgContainer [2021-10-13 01:22:02,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:22:02,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:22:02,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:22:02,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:22:02,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:22:02" (1/3) ... [2021-10-13 01:22:02,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd85767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:22:02, skipping insertion in model container [2021-10-13 01:22:02,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:02" (2/3) ... [2021-10-13 01:22:02,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd85767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:22:02, skipping insertion in model container [2021-10-13 01:22:02,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:22:02" (3/3) ... [2021-10-13 01:22:02,742 INFO L111 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1b.c [2021-10-13 01:22:02,748 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:22:02,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-13 01:22:02,812 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:22:02,839 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:22:02,839 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-13 01:22:02,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 25 states have (on average 1.48) internal successors, (37), 35 states have internal predecessors, (37), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-13 01:22:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 01:22:02,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:02,885 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 01:22:02,886 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:02,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:02,892 INFO L82 PathProgramCache]: Analyzing trace with hash 70122184, now seen corresponding path program 1 times [2021-10-13 01:22:02,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:02,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296304902] [2021-10-13 01:22:02,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:02,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:22:03,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:03,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296304902] [2021-10-13 01:22:03,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296304902] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:03,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:03,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:22:03,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680334869] [2021-10-13 01:22:03,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:22:03,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:03,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:22:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:22:03,111 INFO L87 Difference]: Start difference. First operand has 44 states, 25 states have (on average 1.48) internal successors, (37), 35 states have internal predecessors, (37), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:22:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:03,208 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2021-10-13 01:22:03,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:22:03,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 01:22:03,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:03,221 INFO L225 Difference]: With dead ends: 62 [2021-10-13 01:22:03,221 INFO L226 Difference]: Without dead ends: 55 [2021-10-13 01:22:03,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:22:03,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-13 01:22:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2021-10-13 01:22:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 39 states have internal predecessors, (44), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 01:22:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-10-13 01:22:03,277 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2021-10-13 01:22:03,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:03,278 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-13 01:22:03,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:22:03,278 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2021-10-13 01:22:03,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 01:22:03,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:03,279 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 01:22:03,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:22:03,281 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:03,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:03,282 INFO L82 PathProgramCache]: Analyzing trace with hash -2121179530, now seen corresponding path program 1 times [2021-10-13 01:22:03,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:03,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223995019] [2021-10-13 01:22:03,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:03,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:22:03,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:03,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223995019] [2021-10-13 01:22:03,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223995019] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:03,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:03,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:22:03,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905044671] [2021-10-13 01:22:03,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:22:03,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:03,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:22:03,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:22:03,310 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:22:03,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:03,327 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-10-13 01:22:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:22:03,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 01:22:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:03,329 INFO L225 Difference]: With dead ends: 52 [2021-10-13 01:22:03,330 INFO L226 Difference]: Without dead ends: 51 [2021-10-13 01:22:03,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:22:03,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-13 01:22:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-10-13 01:22:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.4) internal successors, (42), 38 states have internal predecessors, (42), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-10-13 01:22:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-10-13 01:22:03,344 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 6 [2021-10-13 01:22:03,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:03,344 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-10-13 01:22:03,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:22:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-10-13 01:22:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 01:22:03,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:03,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:03,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:22:03,346 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:03,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:03,347 INFO L82 PathProgramCache]: Analyzing trace with hash -2074588191, now seen corresponding path program 1 times [2021-10-13 01:22:03,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:03,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586363440] [2021-10-13 01:22:03,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:03,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:22:03,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:03,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586363440] [2021-10-13 01:22:03,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586363440] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:03,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:03,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:22:03,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556761873] [2021-10-13 01:22:03,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:22:03,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:03,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:22:03,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:22:03,454 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:22:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:03,636 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2021-10-13 01:22:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:22:03,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 01:22:03,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:03,644 INFO L225 Difference]: With dead ends: 77 [2021-10-13 01:22:03,645 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 01:22:03,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:22:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 01:22:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2021-10-13 01:22:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 50 states have internal predecessors, (60), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-10-13 01:22:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2021-10-13 01:22:03,677 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 10 [2021-10-13 01:22:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:03,677 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2021-10-13 01:22:03,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:22:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2021-10-13 01:22:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:22:03,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:03,679 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:03,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:22:03,680 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:03,682 INFO L82 PathProgramCache]: Analyzing trace with hash 112275557, now seen corresponding path program 1 times [2021-10-13 01:22:03,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:03,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002736089] [2021-10-13 01:22:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:03,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:22:03,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:03,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002736089] [2021-10-13 01:22:03,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002736089] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:03,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:03,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:22:03,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325005579] [2021-10-13 01:22:03,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:22:03,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:03,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:22:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:22:03,737 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:22:03,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:03,762 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2021-10-13 01:22:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:22:03,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 01:22:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:03,768 INFO L225 Difference]: With dead ends: 69 [2021-10-13 01:22:03,769 INFO L226 Difference]: Without dead ends: 68 [2021-10-13 01:22:03,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:22:03,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-13 01:22:03,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2021-10-13 01:22:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.380952380952381) internal successors, (58), 49 states have internal predecessors, (58), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-10-13 01:22:03,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2021-10-13 01:22:03,788 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 11 [2021-10-13 01:22:03,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:03,788 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2021-10-13 01:22:03,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:22:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2021-10-13 01:22:03,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 01:22:03,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:03,790 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:03,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 01:22:03,792 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:03,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2048531074, now seen corresponding path program 1 times [2021-10-13 01:22:03,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:03,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902094644] [2021-10-13 01:22:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:03,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 01:22:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:22:03,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:03,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902094644] [2021-10-13 01:22:03,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902094644] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:03,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:03,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:22:03,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883142172] [2021-10-13 01:22:03,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:22:03,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:03,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:22:03,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:22:03,896 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:03,954 INFO L93 Difference]: Finished difference Result 125 states and 160 transitions. [2021-10-13 01:22:03,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:22:03,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-10-13 01:22:03,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:03,957 INFO L225 Difference]: With dead ends: 125 [2021-10-13 01:22:03,957 INFO L226 Difference]: Without dead ends: 86 [2021-10-13 01:22:03,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:22:03,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-13 01:22:03,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2021-10-13 01:22:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 58 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2021-10-13 01:22:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-10-13 01:22:03,990 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 16 [2021-10-13 01:22:03,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:03,990 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-10-13 01:22:03,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:03,991 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-10-13 01:22:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 01:22:03,992 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:03,992 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:03,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 01:22:03,993 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:03,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:03,994 INFO L82 PathProgramCache]: Analyzing trace with hash -57180086, now seen corresponding path program 1 times [2021-10-13 01:22:03,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:03,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127451026] [2021-10-13 01:22:03,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:03,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 01:22:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 01:22:04,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:04,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127451026] [2021-10-13 01:22:04,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127451026] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:04,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:04,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:22:04,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602918859] [2021-10-13 01:22:04,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:22:04,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:22:04,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:22:04,027 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:04,038 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2021-10-13 01:22:04,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:22:04,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-13 01:22:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:04,040 INFO L225 Difference]: With dead ends: 76 [2021-10-13 01:22:04,040 INFO L226 Difference]: Without dead ends: 75 [2021-10-13 01:22:04,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:22:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-13 01:22:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-13 01:22:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 57 states have internal predecessors, (63), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2021-10-13 01:22:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2021-10-13 01:22:04,052 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 18 [2021-10-13 01:22:04,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:04,052 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2021-10-13 01:22:04,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2021-10-13 01:22:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 01:22:04,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:04,054 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:04,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 01:22:04,054 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:04,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:04,055 INFO L82 PathProgramCache]: Analyzing trace with hash -599425808, now seen corresponding path program 1 times [2021-10-13 01:22:04,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:04,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198919711] [2021-10-13 01:22:04,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:04,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 01:22:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 01:22:04,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:04,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198919711] [2021-10-13 01:22:04,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198919711] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:04,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:04,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:22:04,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550257101] [2021-10-13 01:22:04,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:22:04,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:04,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:22:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:22:04,133 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:22:04,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:04,153 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2021-10-13 01:22:04,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:22:04,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-10-13 01:22:04,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:04,155 INFO L225 Difference]: With dead ends: 75 [2021-10-13 01:22:04,155 INFO L226 Difference]: Without dead ends: 74 [2021-10-13 01:22:04,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:22:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-13 01:22:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-13 01:22:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 56 states have internal predecessors, (61), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2021-10-13 01:22:04,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-10-13 01:22:04,175 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 19 [2021-10-13 01:22:04,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:04,175 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-10-13 01:22:04,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:22:04,176 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-10-13 01:22:04,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 01:22:04,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:04,178 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:04,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 01:22:04,178 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:04,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:04,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1772582622, now seen corresponding path program 1 times [2021-10-13 01:22:04,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:04,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664320591] [2021-10-13 01:22:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:04,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 01:22:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 01:22:04,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:04,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664320591] [2021-10-13 01:22:04,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664320591] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:04,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:04,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:22:04,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101848997] [2021-10-13 01:22:04,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:22:04,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:22:04,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:22:04,229 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:04,248 INFO L93 Difference]: Finished difference Result 95 states and 126 transitions. [2021-10-13 01:22:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:22:04,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-13 01:22:04,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:04,250 INFO L225 Difference]: With dead ends: 95 [2021-10-13 01:22:04,250 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 01:22:04,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:22:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 01:22:04,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2021-10-13 01:22:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 60 states have internal predecessors, (67), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2021-10-13 01:22:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2021-10-13 01:22:04,262 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 19 [2021-10-13 01:22:04,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:04,263 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2021-10-13 01:22:04,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2021-10-13 01:22:04,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 01:22:04,264 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:04,265 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:04,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 01:22:04,265 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:04,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1402330794, now seen corresponding path program 1 times [2021-10-13 01:22:04,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:04,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638311783] [2021-10-13 01:22:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:04,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 01:22:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 01:22:04,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:04,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638311783] [2021-10-13 01:22:04,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638311783] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:04,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:04,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:22:04,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545792607] [2021-10-13 01:22:04,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:22:04,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:04,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:22:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:22:04,308 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:22:04,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:04,328 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2021-10-13 01:22:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:22:04,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-10-13 01:22:04,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:04,332 INFO L225 Difference]: With dead ends: 89 [2021-10-13 01:22:04,332 INFO L226 Difference]: Without dead ends: 83 [2021-10-13 01:22:04,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:22:04,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-13 01:22:04,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-10-13 01:22:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 58 states have (on average 1.206896551724138) internal successors, (70), 63 states have internal predecessors, (70), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2021-10-13 01:22:04,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2021-10-13 01:22:04,356 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 20 [2021-10-13 01:22:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:04,357 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2021-10-13 01:22:04,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:22:04,357 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2021-10-13 01:22:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 01:22:04,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:04,359 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:04,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 01:22:04,360 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:04,363 INFO L82 PathProgramCache]: Analyzing trace with hash 921726737, now seen corresponding path program 1 times [2021-10-13 01:22:04,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:04,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790877961] [2021-10-13 01:22:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:04,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 01:22:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 01:22:04,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:04,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790877961] [2021-10-13 01:22:04,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790877961] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:04,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:04,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:22:04,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877255268] [2021-10-13 01:22:04,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:22:04,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:04,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:22:04,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:22:04,416 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:04,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:04,488 INFO L93 Difference]: Finished difference Result 167 states and 222 transitions. [2021-10-13 01:22:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:22:04,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-10-13 01:22:04,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:04,494 INFO L225 Difference]: With dead ends: 167 [2021-10-13 01:22:04,494 INFO L226 Difference]: Without dead ends: 101 [2021-10-13 01:22:04,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:22:04,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-13 01:22:04,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2021-10-13 01:22:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 68 states have internal predecessors, (73), 14 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (21), 14 states have call predecessors, (21), 13 states have call successors, (21) [2021-10-13 01:22:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2021-10-13 01:22:04,519 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 23 [2021-10-13 01:22:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:04,519 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2021-10-13 01:22:04,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 01:22:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2021-10-13 01:22:04,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 01:22:04,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:04,527 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:04,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 01:22:04,528 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:04,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:04,528 INFO L82 PathProgramCache]: Analyzing trace with hash 970950199, now seen corresponding path program 1 times [2021-10-13 01:22:04,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:04,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340276412] [2021-10-13 01:22:04,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:04,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-13 01:22:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-10-13 01:22:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-13 01:22:04,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:04,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340276412] [2021-10-13 01:22:04,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340276412] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:04,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:04,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:22:04,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003112540] [2021-10-13 01:22:04,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:22:04,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:04,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:22:04,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:22:04,629 INFO L87 Difference]: Start difference. First operand 89 states and 108 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:22:04,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:04,693 INFO L93 Difference]: Finished difference Result 176 states and 226 transitions. [2021-10-13 01:22:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:22:04,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2021-10-13 01:22:04,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:04,695 INFO L225 Difference]: With dead ends: 176 [2021-10-13 01:22:04,695 INFO L226 Difference]: Without dead ends: 105 [2021-10-13 01:22:04,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:22:04,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-13 01:22:04,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2021-10-13 01:22:04,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 73 states have internal predecessors, (78), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2021-10-13 01:22:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2021-10-13 01:22:04,714 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 34 [2021-10-13 01:22:04,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:04,714 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2021-10-13 01:22:04,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 01:22:04,714 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2021-10-13 01:22:04,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 01:22:04,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:04,717 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:04,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 01:22:04,717 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:04,718 INFO L82 PathProgramCache]: Analyzing trace with hash -803513320, now seen corresponding path program 1 times [2021-10-13 01:22:04,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:04,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261175480] [2021-10-13 01:22:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:04,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 01:22:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-10-13 01:22:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-13 01:22:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 01:22:04,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:04,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261175480] [2021-10-13 01:22:04,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261175480] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:04,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:04,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:22:04,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828331904] [2021-10-13 01:22:04,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:22:04,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:04,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:22:04,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:22:04,795 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:22:04,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:04,809 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2021-10-13 01:22:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:22:04,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2021-10-13 01:22:04,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:04,811 INFO L225 Difference]: With dead ends: 104 [2021-10-13 01:22:04,811 INFO L226 Difference]: Without dead ends: 103 [2021-10-13 01:22:04,812 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:22:04,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-13 01:22:04,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2021-10-13 01:22:04,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 75 states have internal predecessors, (82), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 18 states have call predecessors, (23), 15 states have call successors, (23) [2021-10-13 01:22:04,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2021-10-13 01:22:04,819 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 32 [2021-10-13 01:22:04,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:04,820 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2021-10-13 01:22:04,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:22:04,820 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2021-10-13 01:22:04,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 01:22:04,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:04,821 INFO L512 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:04,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 01:22:04,821 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:04,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:04,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1793772729, now seen corresponding path program 1 times [2021-10-13 01:22:04,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:04,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058824325] [2021-10-13 01:22:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:04,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-13 01:22:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-10-13 01:22:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-10-13 01:22:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-13 01:22:04,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:04,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058824325] [2021-10-13 01:22:04,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058824325] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:04,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:04,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:22:04,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943811703] [2021-10-13 01:22:04,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:22:04,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:22:04,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:22:04,859 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:22:04,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:04,867 INFO L93 Difference]: Finished difference Result 101 states and 121 transitions. [2021-10-13 01:22:04,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:22:04,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-10-13 01:22:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:04,868 INFO L225 Difference]: With dead ends: 101 [2021-10-13 01:22:04,869 INFO L226 Difference]: Without dead ends: 100 [2021-10-13 01:22:04,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:22:04,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-13 01:22:04,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-10-13 01:22:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 74 states have internal predecessors, (80), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 18 states have call predecessors, (23), 15 states have call successors, (23) [2021-10-13 01:22:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2021-10-13 01:22:04,876 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 38 [2021-10-13 01:22:04,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:04,877 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2021-10-13 01:22:04,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 01:22:04,877 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2021-10-13 01:22:04,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 01:22:04,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:04,878 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:04,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 01:22:04,878 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:04,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:04,879 INFO L82 PathProgramCache]: Analyzing trace with hash -747989016, now seen corresponding path program 1 times [2021-10-13 01:22:04,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:04,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086321069] [2021-10-13 01:22:04,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:04,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-10-13 01:22:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 01:22:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-10-13 01:22:04,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:04,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086321069] [2021-10-13 01:22:04,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086321069] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:04,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:04,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:22:04,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251538033] [2021-10-13 01:22:04,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:22:04,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:22:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:22:04,947 INFO L87 Difference]: Start difference. First operand 100 states and 119 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 01:22:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:04,979 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2021-10-13 01:22:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:22:04,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2021-10-13 01:22:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:04,981 INFO L225 Difference]: With dead ends: 110 [2021-10-13 01:22:04,981 INFO L226 Difference]: Without dead ends: 109 [2021-10-13 01:22:04,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:22:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-13 01:22:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2021-10-13 01:22:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.1142857142857143) internal successors, (78), 73 states have internal predecessors, (78), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 18 states have call predecessors, (23), 15 states have call successors, (23) [2021-10-13 01:22:04,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2021-10-13 01:22:04,988 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 43 [2021-10-13 01:22:04,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:04,988 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2021-10-13 01:22:04,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 01:22:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2021-10-13 01:22:04,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 01:22:04,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:04,990 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:04,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 01:22:04,990 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:04,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:04,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1488967228, now seen corresponding path program 1 times [2021-10-13 01:22:04,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:04,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491794061] [2021-10-13 01:22:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:04,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 01:22:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 01:22:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 01:22:05,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:05,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491794061] [2021-10-13 01:22:05,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491794061] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:22:05,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063073414] [2021-10-13 01:22:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:05,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:22:05,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:22:05,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:22:05,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 01:22:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:22:05,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 01:22:05,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063073414] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:05,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 01:22:05,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2021-10-13 01:22:05,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289958616] [2021-10-13 01:22:05,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:22:05,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:05,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:22:05,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:22:05,438 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 01:22:05,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:05,525 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2021-10-13 01:22:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:22:05,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2021-10-13 01:22:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:05,527 INFO L225 Difference]: With dead ends: 100 [2021-10-13 01:22:05,527 INFO L226 Difference]: Without dead ends: 99 [2021-10-13 01:22:05,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 86.6ms TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:22:05,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-13 01:22:05,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2021-10-13 01:22:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.1) internal successors, (77), 72 states have internal predecessors, (77), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 18 states have call predecessors, (23), 15 states have call successors, (23) [2021-10-13 01:22:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2021-10-13 01:22:05,534 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 40 [2021-10-13 01:22:05,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:05,534 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2021-10-13 01:22:05,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 01:22:05,535 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2021-10-13 01:22:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 01:22:05,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:05,536 INFO L512 BasicCegarLoop]: trace histogram [7, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:05,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:22:05,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:22:05,757 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:05,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:05,758 INFO L82 PathProgramCache]: Analyzing trace with hash 822906818, now seen corresponding path program 1 times [2021-10-13 01:22:05,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:05,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130251101] [2021-10-13 01:22:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:05,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-13 01:22:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 01:22:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-13 01:22:05,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:05,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130251101] [2021-10-13 01:22:05,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130251101] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:22:05,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105848437] [2021-10-13 01:22:05,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:05,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:22:05,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:22:05,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:22:05,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 01:22:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:05,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:22:05,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-13 01:22:06,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105848437] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:06,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 01:22:06,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2021-10-13 01:22:06,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492270785] [2021-10-13 01:22:06,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:22:06,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:06,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:22:06,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:22:06,102 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 01:22:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:06,227 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2021-10-13 01:22:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 01:22:06,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 52 [2021-10-13 01:22:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:06,229 INFO L225 Difference]: With dead ends: 126 [2021-10-13 01:22:06,229 INFO L226 Difference]: Without dead ends: 125 [2021-10-13 01:22:06,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 106.0ms TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-10-13 01:22:06,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-13 01:22:06,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-10-13 01:22:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 89 states have (on average 1.101123595505618) internal successors, (98), 91 states have internal predecessors, (98), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (31), 24 states have call predecessors, (31), 20 states have call successors, (31) [2021-10-13 01:22:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2021-10-13 01:22:06,240 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 52 [2021-10-13 01:22:06,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:06,241 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2021-10-13 01:22:06,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 01:22:06,242 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2021-10-13 01:22:06,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 01:22:06,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:06,243 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:06,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:22:06,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 01:22:06,459 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:06,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:06,459 INFO L82 PathProgramCache]: Analyzing trace with hash 695736933, now seen corresponding path program 1 times [2021-10-13 01:22:06,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:06,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784946336] [2021-10-13 01:22:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:06,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:06,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 01:22:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:06,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:06,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 01:22:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-13 01:22:06,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:06,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784946336] [2021-10-13 01:22:06,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784946336] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:22:06,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711179001] [2021-10-13 01:22:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:06,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:22:06,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:22:06,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:22:06,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 01:22:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:06,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:22:06,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-13 01:22:06,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711179001] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:06,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 01:22:06,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2021-10-13 01:22:06,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622593381] [2021-10-13 01:22:06,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:22:06,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:06,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:22:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:22:06,818 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 01:22:06,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:06,889 INFO L93 Difference]: Finished difference Result 152 states and 185 transitions. [2021-10-13 01:22:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:22:06,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2021-10-13 01:22:06,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:06,892 INFO L225 Difference]: With dead ends: 152 [2021-10-13 01:22:06,892 INFO L226 Difference]: Without dead ends: 151 [2021-10-13 01:22:06,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 76.8ms TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:22:06,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-13 01:22:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-10-13 01:22:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 108 states have (on average 1.1018518518518519) internal successors, (119), 110 states have internal predecessors, (119), 26 states have call successors, (26), 9 states have call predecessors, (26), 13 states have return successors, (39), 30 states have call predecessors, (39), 25 states have call successors, (39) [2021-10-13 01:22:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 184 transitions. [2021-10-13 01:22:06,908 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 184 transitions. Word has length 45 [2021-10-13 01:22:06,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:06,908 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 184 transitions. [2021-10-13 01:22:06,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-10-13 01:22:06,908 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 184 transitions. [2021-10-13 01:22:06,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-13 01:22:06,909 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:06,910 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:06,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:22:07,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 01:22:07,135 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:07,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:07,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1252678887, now seen corresponding path program 1 times [2021-10-13 01:22:07,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:07,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133376104] [2021-10-13 01:22:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:07,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 01:22:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 01:22:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-10-13 01:22:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-13 01:22:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-10-13 01:22:07,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:07,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133376104] [2021-10-13 01:22:07,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133376104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:22:07,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702576487] [2021-10-13 01:22:07,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:07,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:22:07,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:22:07,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:22:07,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 01:22:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:22:07,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-10-13 01:22:07,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702576487] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:22:07,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:22:07,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-13 01:22:07,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611607429] [2021-10-13 01:22:07,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 01:22:07,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:07,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:22:07,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:22:07,478 INFO L87 Difference]: Start difference. First operand 150 states and 184 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 01:22:07,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:07,500 INFO L93 Difference]: Finished difference Result 159 states and 194 transitions. [2021-10-13 01:22:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:22:07,501 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2021-10-13 01:22:07,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:07,503 INFO L225 Difference]: With dead ends: 159 [2021-10-13 01:22:07,503 INFO L226 Difference]: Without dead ends: 155 [2021-10-13 01:22:07,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:22:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-13 01:22:07,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-10-13 01:22:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 112 states have (on average 1.0982142857142858) internal successors, (123), 114 states have internal predecessors, (123), 26 states have call successors, (26), 9 states have call predecessors, (26), 14 states have return successors, (40), 31 states have call predecessors, (40), 25 states have call successors, (40) [2021-10-13 01:22:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 189 transitions. [2021-10-13 01:22:07,517 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 189 transitions. Word has length 60 [2021-10-13 01:22:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:07,517 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 189 transitions. [2021-10-13 01:22:07,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-13 01:22:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 189 transitions. [2021-10-13 01:22:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-13 01:22:07,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:07,519 INFO L512 BasicCegarLoop]: trace histogram [11, 8, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:07,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:22:07,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 01:22:07,743 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:07,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1713501635, now seen corresponding path program 2 times [2021-10-13 01:22:07,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:07,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053903572] [2021-10-13 01:22:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:07,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-10-13 01:22:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 01:22:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-10-13 01:22:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 01:22:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 71 proven. 28 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-10-13 01:22:07,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:07,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053903572] [2021-10-13 01:22:07,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053903572] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:22:07,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798538273] [2021-10-13 01:22:07,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:22:07,859 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:22:07,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:22:07,866 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:22:07,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 01:22:07,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:22:07,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:22:07,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:22:08,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 71 proven. 28 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-10-13 01:22:08,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798538273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:22:08,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:22:08,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-10-13 01:22:08,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516089823] [2021-10-13 01:22:08,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 01:22:08,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:08,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:22:08,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:22:08,201 INFO L87 Difference]: Start difference. First operand 155 states and 189 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-10-13 01:22:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:08,302 INFO L93 Difference]: Finished difference Result 252 states and 311 transitions. [2021-10-13 01:22:08,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:22:08,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 82 [2021-10-13 01:22:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:08,304 INFO L225 Difference]: With dead ends: 252 [2021-10-13 01:22:08,304 INFO L226 Difference]: Without dead ends: 97 [2021-10-13 01:22:08,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-13 01:22:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-13 01:22:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2021-10-13 01:22:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 62 states have (on average 1.064516129032258) internal successors, (66), 64 states have internal predecessors, (66), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (16), 13 states have call predecessors, (16), 11 states have call successors, (16) [2021-10-13 01:22:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2021-10-13 01:22:08,316 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 82 [2021-10-13 01:22:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:08,317 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2021-10-13 01:22:08,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2021-10-13 01:22:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2021-10-13 01:22:08,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-13 01:22:08,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:08,325 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2021-10-13 01:22:08,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-13 01:22:08,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:22:08,550 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-10-13 01:22:08,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:08,550 INFO L82 PathProgramCache]: Analyzing trace with hash -151262980, now seen corresponding path program 2 times [2021-10-13 01:22:08,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:08,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146774515] [2021-10-13 01:22:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:08,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-13 01:22:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 01:22:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-10-13 01:22:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 01:22:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-13 01:22:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 01:22:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-13 01:22:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 01:22:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-13 01:22:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 48 proven. 78 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-10-13 01:22:08,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:08,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146774515] [2021-10-13 01:22:08,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146774515] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:22:08,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817745411] [2021-10-13 01:22:08,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:22:08,749 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:22:08,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:22:08,755 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:22:08,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 01:22:08,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:22:08,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:22:08,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:22:08,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:22:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 48 proven. 78 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-10-13 01:22:09,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817745411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:22:09,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:22:09,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 13 [2021-10-13 01:22:09,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253429141] [2021-10-13 01:22:09,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 01:22:09,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:09,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 01:22:09,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:22:09,215 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 7 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2021-10-13 01:22:09,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:09,366 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2021-10-13 01:22:09,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 01:22:09,366 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 7 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 124 [2021-10-13 01:22:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:09,367 INFO L225 Difference]: With dead ends: 95 [2021-10-13 01:22:09,367 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:22:09,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-10-13 01:22:09,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:22:09,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:22:09,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-13 01:22:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:22:09,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 124 [2021-10-13 01:22:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:09,368 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:22:09,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 7 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2021-10-13 01:22:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:22:09,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:22:09,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:22:09,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:22:09,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:22:09,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:22:09,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:22:09,371 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:22:09,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:22:09,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:22:09,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:22:09,372 INFO L764 garLoopResultBuilder]: Registering result SAFE for location rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 01:22:09,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:22:09,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:22:09,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 01:22:09,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:09,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:10,056 INFO L857 garLoopResultBuilder]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,056 INFO L857 garLoopResultBuilder]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2021-10-13 01:22:10,057 INFO L857 garLoopResultBuilder]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,057 INFO L857 garLoopResultBuilder]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2021-10-13 01:22:10,057 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,057 INFO L860 garLoopResultBuilder]: At program point rec1ENTRY(lines 11 15) the Hoare annotation is: true [2021-10-13 01:22:10,057 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,057 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-13 01:22:10,058 INFO L853 garLoopResultBuilder]: At program point L14-2(line 14) the Hoare annotation is: (and (not (<= |rec1_#in~i| 2147483646)) (or (= |rec1_#in~i| rec1_~i) (not (<= |rec1_#in~i| 2147483647)))) [2021-10-13 01:22:10,058 INFO L857 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,058 INFO L857 garLoopResultBuilder]: For program point L14-4(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,058 INFO L857 garLoopResultBuilder]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,058 INFO L857 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,059 INFO L853 garLoopResultBuilder]: At program point L14-6(line 14) the Hoare annotation is: (and (not (<= |rec1_#in~i| 2147483646)) (or (and (= |rec1_#in~i| rec1_~i) (<= |rec1_#t~ret0| 1)) (not (<= |rec1_#in~i| 2147483647)))) [2021-10-13 01:22:10,059 INFO L857 garLoopResultBuilder]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,059 INFO L857 garLoopResultBuilder]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,059 INFO L857 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,059 INFO L857 garLoopResultBuilder]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,059 INFO L853 garLoopResultBuilder]: At program point L14-8(line 14) the Hoare annotation is: (and (not (<= |rec1_#in~i| 2147483646)) (or (and (<= |rec1_#t~ret1| 0) (= |rec1_#in~i| rec1_~i) (<= |rec1_#t~ret0| 1)) (not (<= |rec1_#in~i| 2147483647)))) [2021-10-13 01:22:10,060 INFO L857 garLoopResultBuilder]: For program point L14-9(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,060 INFO L857 garLoopResultBuilder]: For program point L14-10(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,060 INFO L857 garLoopResultBuilder]: For program point L14-11(line 14) no Hoare annotation was computed. [2021-10-13 01:22:10,060 INFO L857 garLoopResultBuilder]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 01:22:10,060 INFO L857 garLoopResultBuilder]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2021-10-13 01:22:10,060 INFO L857 garLoopResultBuilder]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2021-10-13 01:22:10,061 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-13 01:22:10,061 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-13 01:22:10,061 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2021-10-13 01:22:10,061 INFO L853 garLoopResultBuilder]: At program point L20-2(line 20) the Hoare annotation is: (and (not (<= |rec2_#in~j| 0)) (or (not (<= |rec2_#in~j| 2147483647)) (= rec2_~j |rec2_#in~j|))) [2021-10-13 01:22:10,061 INFO L857 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2021-10-13 01:22:10,061 INFO L853 garLoopResultBuilder]: At program point L20-4(line 20) the Hoare annotation is: (and (let ((.cse0 (= rec2_~j |rec2_#in~j|))) (or (and (<= 2 |rec2_#in~j|) (<= |rec2_#t~ret3| 1) .cse0) (not (<= |rec2_#in~j| 2147483647)) (and (<= |rec2_#t~ret3| 0) .cse0))) (not (<= |rec2_#in~j| 0))) [2021-10-13 01:22:10,062 INFO L857 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2021-10-13 01:22:10,062 INFO L857 garLoopResultBuilder]: For program point L20-6(line 20) no Hoare annotation was computed. [2021-10-13 01:22:10,062 INFO L857 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2021-10-13 01:22:10,062 INFO L860 garLoopResultBuilder]: At program point rec2ENTRY(lines 17 21) the Hoare annotation is: true [2021-10-13 01:22:10,062 INFO L857 garLoopResultBuilder]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 01:22:10,062 INFO L857 garLoopResultBuilder]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 01:22:10,063 INFO L857 garLoopResultBuilder]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-13 01:22:10,063 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 01:22:10,063 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 01:22:10,063 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 01:22:10,063 INFO L853 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-13 01:22:10,063 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-13 01:22:10,063 INFO L857 garLoopResultBuilder]: For program point L23(lines 23 26) no Hoare annotation was computed. [2021-10-13 01:22:10,068 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:22:10,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:22:10 BoogieIcfgContainer [2021-10-13 01:22:10,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:22:10,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:22:10,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:22:10,072 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:22:10,073 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:22:02" (3/4) ... [2021-10-13 01:22:10,075 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:22:10,082 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2021-10-13 01:22:10,082 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2021-10-13 01:22:10,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 01:22:10,087 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 01:22:10,120 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:22:10,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:22:10,121 INFO L168 Benchmark]: Toolchain (without parser) took 8089.63 ms. Allocated memory was 117.4 MB in the beginning and 165.7 MB in the end (delta: 48.2 MB). Free memory was 75.7 MB in the beginning and 52.8 MB in the end (delta: 22.9 MB). Peak memory consumption was 71.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:10,122 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 117.4 MB. Free memory is still 92.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:22:10,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.79 ms. Allocated memory is still 117.4 MB. Free memory was 75.5 MB in the beginning and 93.5 MB in the end (delta: -18.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:10,123 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.35 ms. Allocated memory is still 117.4 MB. Free memory was 93.5 MB in the beginning and 92.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:22:10,123 INFO L168 Benchmark]: Boogie Preprocessor took 31.32 ms. Allocated memory is still 117.4 MB. Free memory was 92.0 MB in the beginning and 91.4 MB in the end (delta: 556.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:22:10,123 INFO L168 Benchmark]: RCFGBuilder took 257.91 ms. Allocated memory is still 117.4 MB. Free memory was 90.9 MB in the beginning and 82.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:10,124 INFO L168 Benchmark]: TraceAbstraction took 7336.86 ms. Allocated memory was 117.4 MB in the beginning and 165.7 MB in the end (delta: 48.2 MB). Free memory was 81.5 MB in the beginning and 56.0 MB in the end (delta: 25.5 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:10,124 INFO L168 Benchmark]: Witness Printer took 48.43 ms. Allocated memory is still 165.7 MB. Free memory was 56.0 MB in the beginning and 52.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:10,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 117.4 MB. Free memory is still 92.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.79 ms. Allocated memory is still 117.4 MB. Free memory was 75.5 MB in the beginning and 93.5 MB in the end (delta: -18.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.35 ms. Allocated memory is still 117.4 MB. Free memory was 93.5 MB in the beginning and 92.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.32 ms. Allocated memory is still 117.4 MB. Free memory was 92.0 MB in the beginning and 91.4 MB in the end (delta: 556.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 257.91 ms. Allocated memory is still 117.4 MB. Free memory was 90.9 MB in the beginning and 82.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7336.86 ms. Allocated memory was 117.4 MB in the beginning and 165.7 MB in the end (delta: 48.2 MB). Free memory was 81.5 MB in the beginning and 56.0 MB in the end (delta: 25.5 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. * Witness Printer took 48.43 ms. Allocated memory is still 165.7 MB. Free memory was 56.0 MB in the beginning and 52.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 7257.9ms, OverallIterations: 20, TraceHistogramMax: 12, EmptinessCheckTime: 63.5ms, AutomataDifference: 1338.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 480.0ms, InitialAbstractionConstructionTime: 13.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 764 SDtfs, 301 SDslu, 1960 SDs, 0 SdLazy, 762 SolverSat, 98 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 515.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 648 GetRequests, 526 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 666.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=18, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 293.9ms AutomataMinimizationTime, 20 MinimizatonAttempts, 93 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 238 PreInvPairs, 260 NumberOfFragments, 95 HoareAnnotationTreeSize, 238 FomulaSimplifications, 903 FormulaSimplificationTreeSizeReduction, 270.7ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 519 FormulaSimplificationTreeSizeReductionInter, 192.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 61.6ms SsaConstructionTime, 318.8ms SatisfiabilityAnalysisTime, 2548.6ms InterpolantComputationTime, 1100 NumberOfCodeBlocks, 1100 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1074 ConstructedInterpolants, 0 QuantifiedInterpolants, 1680 SizeOfPredicates, 6 NumberOfNonLiveVariables, 829 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 26 InterpolantComputations, 17 PerfectInterpolantSequences, 1386/1614 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 01:22:10,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cd6ac2a-5403-472c-b533-4e48c002aec7/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...