./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC --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 94b61e96441ca10668b436b4ef10dfd9464f0863 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:24:41,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:24:41,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:24:41,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:24:41,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:24:41,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:24:41,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:24:41,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:24:41,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:24:41,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:24:41,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:24:41,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:24:41,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:24:42,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:24:42,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:24:42,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:24:42,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:24:42,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:24:42,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:24:42,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:24:42,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:24:42,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:24:42,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:24:42,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:24:42,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:24:42,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:24:42,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:24:42,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:24:42,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:24:42,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:24:42,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:24:42,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:24:42,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:24:42,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:24:42,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:24:42,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:24:42,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:24:42,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:24:42,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:24:42,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:24:42,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:24:42,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-11 00:24:42,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:24:42,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:24:42,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:24:42,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:24:42,095 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:24:42,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:24:42,095 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:24:42,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:24:42,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:24:42,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:24:42,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:24:42,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:24:42,104 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:24:42,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:24:42,105 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:24:42,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:24:42,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:24:42,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:24:42,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:24:42,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:24:42,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:24:42,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:24:42,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:24:42,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:24:42,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:24:42,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:24:42,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:24:42,109 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_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2021-10-11 00:24:42,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:24:42,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:24:42,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:24:42,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:24:42,430 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:24:42,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted/NonTermination4.c [2021-10-11 00:24:42,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/data/aeace360f/6568120141bb4c7dbbf98ec84511d83f/FLAGb0b7ff08c [2021-10-11 00:24:42,951 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:24:42,951 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/sv-benchmarks/c/termination-crafted/NonTermination4.c [2021-10-11 00:24:42,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/data/aeace360f/6568120141bb4c7dbbf98ec84511d83f/FLAGb0b7ff08c [2021-10-11 00:24:43,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/data/aeace360f/6568120141bb4c7dbbf98ec84511d83f [2021-10-11 00:24:43,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:24:43,359 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:24:43,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:43,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:24:43,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:24:43,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:43" (1/1) ... [2021-10-11 00:24:43,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e20ca52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43, skipping insertion in model container [2021-10-11 00:24:43,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:43" (1/1) ... [2021-10-11 00:24:43,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:24:43,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:24:43,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:43,517 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:24:43,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:43,545 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:24:43,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43 WrapperNode [2021-10-11 00:24:43,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:43,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:43,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:24:43,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:24:43,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43" (1/1) ... [2021-10-11 00:24:43,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43" (1/1) ... [2021-10-11 00:24:43,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:43,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:24:43,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:24:43,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:24:43,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43" (1/1) ... [2021-10-11 00:24:43,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43" (1/1) ... [2021-10-11 00:24:43,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43" (1/1) ... [2021-10-11 00:24:43,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43" (1/1) ... [2021-10-11 00:24:43,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43" (1/1) ... [2021-10-11 00:24:43,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43" (1/1) ... [2021-10-11 00:24:43,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43" (1/1) ... [2021-10-11 00:24:43,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:24:43,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:24:43,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:24:43,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:24:43,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:24:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:24:43,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:24:43,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:24:43,802 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:24:43,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:43 BoogieIcfgContainer [2021-10-11 00:24:43,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:24:43,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:24:43,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:24:43,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:24:43,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:24:43" (1/3) ... [2021-10-11 00:24:43,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb40d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:43, skipping insertion in model container [2021-10-11 00:24:43,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:43" (2/3) ... [2021-10-11 00:24:43,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb40d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:43, skipping insertion in model container [2021-10-11 00:24:43,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:43" (3/3) ... [2021-10-11 00:24:43,819 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2021-10-11 00:24:43,841 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:24:43,844 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 00:24:43,852 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:24:43,875 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:24:43,875 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:24:43,875 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:24:43,875 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:24:43,875 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:24:43,875 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:24:43,875 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:24:43,876 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:24:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2021-10-11 00:24:43,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 00:24:43,900 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:43,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 00:24:43,901 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-11 00:24:43,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:43,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905515894] [2021-10-11 00:24:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:44,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:44,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905515894] [2021-10-11 00:24:44,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:44,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 00:24:44,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447529816] [2021-10-11 00:24:44,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:24:44,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:44,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:24:44,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:44,079 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2021-10-11 00:24:44,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:44,117 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-11 00:24:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:24:44,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 00:24:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:44,127 INFO L225 Difference]: With dead ends: 22 [2021-10-11 00:24:44,127 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 00:24:44,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:44,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 00:24:44,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-11 00:24:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 00:24:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-11 00:24:44,161 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2021-10-11 00:24:44,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:44,162 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-11 00:24:44,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:24:44,162 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-11 00:24:44,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 00:24:44,162 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:44,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 00:24:44,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:24:44,163 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:44,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:44,164 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-11 00:24:44,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:44,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962266767] [2021-10-11 00:24:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:44,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962266767] [2021-10-11 00:24:44,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:44,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 00:24:44,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962018727] [2021-10-11 00:24:44,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:24:44,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:44,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:24:44,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:44,188 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2021-10-11 00:24:44,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:44,212 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-11 00:24:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:24:44,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 00:24:44,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:44,213 INFO L225 Difference]: With dead ends: 12 [2021-10-11 00:24:44,214 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 00:24:44,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:44,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 00:24:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 00:24:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 00:24:44,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-11 00:24:44,220 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2021-10-11 00:24:44,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:44,221 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-11 00:24:44,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:24:44,221 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-11 00:24:44,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:24:44,222 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:44,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:24:44,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:24:44,223 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:44,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:44,224 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2021-10-11 00:24:44,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:44,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219708774] [2021-10-11 00:24:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:44,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219708774] [2021-10-11 00:24:44,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:44,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 00:24:44,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671683240] [2021-10-11 00:24:44,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:24:44,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:44,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:24:44,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:44,284 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2021-10-11 00:24:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:44,321 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-10-11 00:24:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:24:44,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 00:24:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:44,323 INFO L225 Difference]: With dead ends: 15 [2021-10-11 00:24:44,323 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 00:24:44,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:44,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 00:24:44,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-11 00:24:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 00:24:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-11 00:24:44,327 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2021-10-11 00:24:44,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:44,328 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-11 00:24:44,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:24:44,328 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-11 00:24:44,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:24:44,328 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:44,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:24:44,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:24:44,329 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:44,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:44,330 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-10-11 00:24:44,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:44,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053228414] [2021-10-11 00:24:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:44,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053228414] [2021-10-11 00:24:44,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:44,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 00:24:44,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312732892] [2021-10-11 00:24:44,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:24:44,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:44,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:24:44,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:44,391 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2021-10-11 00:24:44,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:44,407 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-11 00:24:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:24:44,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 00:24:44,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:44,408 INFO L225 Difference]: With dead ends: 13 [2021-10-11 00:24:44,408 INFO L226 Difference]: Without dead ends: 12 [2021-10-11 00:24:44,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:24:44,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-11 00:24:44,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-11 00:24:44,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-11 00:24:44,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-11 00:24:44,413 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2021-10-11 00:24:44,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:44,413 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-11 00:24:44,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:24:44,413 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-11 00:24:44,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:24:44,414 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:44,414 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-11 00:24:44,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:24:44,414 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:44,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:44,415 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2021-10-11 00:24:44,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:44,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682687228] [2021-10-11 00:24:44,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:44,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682687228] [2021-10-11 00:24:44,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989378276] [2021-10-11 00:24:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:44,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:24:44,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:44,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:44,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:44,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-11 00:24:44,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54913106] [2021-10-11 00:24:44,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:44,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:44,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:44,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:44,567 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2021-10-11 00:24:44,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:44,589 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-11 00:24:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:24:44,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 00:24:44,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:44,590 INFO L225 Difference]: With dead ends: 17 [2021-10-11 00:24:44,590 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 00:24:44,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:44,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 00:24:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-11 00:24:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 00:24:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-11 00:24:44,595 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-10-11 00:24:44,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:44,595 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-11 00:24:44,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-11 00:24:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:24:44,596 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:44,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-10-11 00:24:44,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:44,822 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:44,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:44,823 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2021-10-11 00:24:44,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:44,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612555677] [2021-10-11 00:24:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:44,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612555677] [2021-10-11 00:24:44,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272928082] [2021-10-11 00:24:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:44,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:24:44,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:44,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:44,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-11 00:24:44,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140718112] [2021-10-11 00:24:44,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:44,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:44,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:44,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:44,941 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2021-10-11 00:24:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:44,962 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-11 00:24:44,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:24:44,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 00:24:44,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:44,963 INFO L225 Difference]: With dead ends: 19 [2021-10-11 00:24:44,964 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 00:24:44,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 00:24:44,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-10-11 00:24:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 00:24:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-11 00:24:44,969 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2021-10-11 00:24:44,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:44,970 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-11 00:24:44,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:44,970 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-11 00:24:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:24:44,970 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:44,970 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2021-10-11 00:24:45,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:45,171 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:45,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:45,172 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2021-10-11 00:24:45,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:45,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23538301] [2021-10-11 00:24:45,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:45,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23538301] [2021-10-11 00:24:45,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554485000] [2021-10-11 00:24:45,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:24:45,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:24:45,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:45,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:24:45,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:45,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:45,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-11 00:24:45,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249713978] [2021-10-11 00:24:45,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:24:45,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:45,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:24:45,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:45,307 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2021-10-11 00:24:45,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:45,332 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-11 00:24:45,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:24:45,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 00:24:45,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:45,333 INFO L225 Difference]: With dead ends: 22 [2021-10-11 00:24:45,333 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 00:24:45,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:45,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 00:24:45,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-10-11 00:24:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 00:24:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-11 00:24:45,338 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2021-10-11 00:24:45,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:45,338 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-11 00:24:45,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:24:45,339 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-11 00:24:45,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:24:45,339 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:45,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2021-10-11 00:24:45,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:45,550 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:45,551 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2021-10-11 00:24:45,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:45,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558123734] [2021-10-11 00:24:45,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:45,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558123734] [2021-10-11 00:24:45,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596310921] [2021-10-11 00:24:45,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:45,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:24:45,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:45,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:24:45,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:45,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:45,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-11 00:24:45,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702966819] [2021-10-11 00:24:45,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:24:45,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:45,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:24:45,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:45,664 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2021-10-11 00:24:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:45,683 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-11 00:24:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:24:45,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 00:24:45,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:45,684 INFO L225 Difference]: With dead ends: 24 [2021-10-11 00:24:45,684 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 00:24:45,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 00:24:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-11 00:24:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 00:24:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-11 00:24:45,689 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2021-10-11 00:24:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:45,689 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-11 00:24:45,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:24:45,689 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-11 00:24:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:24:45,690 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:45,690 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2021-10-11 00:24:45,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:45,914 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:45,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:45,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2021-10-11 00:24:45,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:45,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886261705] [2021-10-11 00:24:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:45,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886261705] [2021-10-11 00:24:45,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989988177] [2021-10-11 00:24:45,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:45,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-11 00:24:45,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:45,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:24:45,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:46,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:46,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-11 00:24:46,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426465266] [2021-10-11 00:24:46,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:24:46,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:46,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:24:46,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:24:46,086 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2021-10-11 00:24:46,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:46,123 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-11 00:24:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:24:46,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-10-11 00:24:46,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:46,124 INFO L225 Difference]: With dead ends: 27 [2021-10-11 00:24:46,124 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 00:24:46,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:24:46,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 00:24:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-10-11 00:24:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 00:24:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-11 00:24:46,132 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2021-10-11 00:24:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:46,132 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-11 00:24:46,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:24:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-11 00:24:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 00:24:46,135 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:46,136 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2021-10-11 00:24:46,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:46,350 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:46,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:46,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2021-10-11 00:24:46,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:46,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609901471] [2021-10-11 00:24:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:46,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609901471] [2021-10-11 00:24:46,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142350112] [2021-10-11 00:24:46,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:46,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-11 00:24:46,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:46,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:24:46,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:46,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:46,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-11 00:24:46,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056013330] [2021-10-11 00:24:46,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:24:46,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:46,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:24:46,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:24:46,514 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2021-10-11 00:24:46,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:46,548 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-10-11 00:24:46,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:24:46,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2021-10-11 00:24:46,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:46,551 INFO L225 Difference]: With dead ends: 29 [2021-10-11 00:24:46,552 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 00:24:46,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:24:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 00:24:46,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-11 00:24:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:24:46,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-11 00:24:46,561 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2021-10-11 00:24:46,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:46,562 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-11 00:24:46,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:24:46,562 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-11 00:24:46,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:24:46,565 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:46,565 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2021-10-11 00:24:46,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:46,774 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:46,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:46,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2021-10-11 00:24:46,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:46,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447401405] [2021-10-11 00:24:46,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:46,830 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:46,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447401405] [2021-10-11 00:24:46,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777325758] [2021-10-11 00:24:46,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:46,859 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:24:46,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:46,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:24:46,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:46,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:46,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-11 00:24:46,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217484312] [2021-10-11 00:24:46,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:24:46,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:46,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:24:46,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:24:46,967 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2021-10-11 00:24:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:47,015 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-11 00:24:47,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:24:47,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-10-11 00:24:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:47,018 INFO L225 Difference]: With dead ends: 32 [2021-10-11 00:24:47,018 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 00:24:47,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:24:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 00:24:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-10-11 00:24:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 00:24:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-10-11 00:24:47,031 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2021-10-11 00:24:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:47,031 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-10-11 00:24:47,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:24:47,031 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-10-11 00:24:47,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:24:47,032 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:47,032 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2021-10-11 00:24:47,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:47,252 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:47,252 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2021-10-11 00:24:47,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:47,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111868533] [2021-10-11 00:24:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:47,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111868533] [2021-10-11 00:24:47,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737153419] [2021-10-11 00:24:47,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:47,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:24:47,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:47,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:24:47,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:47,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:47,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-11 00:24:47,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218483826] [2021-10-11 00:24:47,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:24:47,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:47,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:24:47,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:24:47,484 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2021-10-11 00:24:47,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:47,521 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-11 00:24:47,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:24:47,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2021-10-11 00:24:47,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:47,532 INFO L225 Difference]: With dead ends: 34 [2021-10-11 00:24:47,532 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 00:24:47,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:24:47,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 00:24:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-10-11 00:24:47,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-11 00:24:47,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-10-11 00:24:47,536 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2021-10-11 00:24:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:47,536 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-10-11 00:24:47,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:24:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-10-11 00:24:47,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-11 00:24:47,537 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:47,538 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2021-10-11 00:24:47,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 00:24:47,762 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:47,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:47,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2021-10-11 00:24:47,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:47,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454998326] [2021-10-11 00:24:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:47,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454998326] [2021-10-11 00:24:47,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847779521] [2021-10-11 00:24:47,854 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:47,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-11 00:24:47,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:47,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 00:24:47,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:48,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:48,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-11 00:24:48,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066357477] [2021-10-11 00:24:48,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:24:48,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:48,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:24:48,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:24:48,003 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2021-10-11 00:24:48,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:48,050 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-10-11 00:24:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:24:48,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-10-11 00:24:48,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:48,053 INFO L225 Difference]: With dead ends: 37 [2021-10-11 00:24:48,054 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 00:24:48,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:24:48,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 00:24:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-10-11 00:24:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 00:24:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-10-11 00:24:48,067 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2021-10-11 00:24:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:48,067 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-10-11 00:24:48,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:24:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-10-11 00:24:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 00:24:48,068 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:48,068 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2021-10-11 00:24:48,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:48,285 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:48,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:48,285 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2021-10-11 00:24:48,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:48,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083239170] [2021-10-11 00:24:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:48,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083239170] [2021-10-11 00:24:48,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060467425] [2021-10-11 00:24:48,350 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:24:48,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-11 00:24:48,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:48,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 00:24:48,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:48,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:48,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-11 00:24:48,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325426667] [2021-10-11 00:24:48,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:24:48,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:48,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:24:48,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:24:48,512 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2021-10-11 00:24:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:48,542 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-10-11 00:24:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:24:48,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2021-10-11 00:24:48,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:48,545 INFO L225 Difference]: With dead ends: 39 [2021-10-11 00:24:48,545 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 00:24:48,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:24:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 00:24:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-10-11 00:24:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 00:24:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-11 00:24:48,549 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2021-10-11 00:24:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:48,549 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-11 00:24:48,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:24:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-11 00:24:48,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 00:24:48,553 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:48,553 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2021-10-11 00:24:48,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:48,782 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:48,782 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2021-10-11 00:24:48,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:48,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876758450] [2021-10-11 00:24:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:48,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876758450] [2021-10-11 00:24:48,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478725675] [2021-10-11 00:24:48,881 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:48,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-11 00:24:48,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:48,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:24:48,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:49,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:49,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-11 00:24:49,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247695080] [2021-10-11 00:24:49,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:24:49,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:49,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:24:49,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:24:49,056 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2021-10-11 00:24:49,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:49,110 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-11 00:24:49,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:24:49,110 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2021-10-11 00:24:49,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:49,111 INFO L225 Difference]: With dead ends: 42 [2021-10-11 00:24:49,111 INFO L226 Difference]: Without dead ends: 41 [2021-10-11 00:24:49,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:24:49,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-11 00:24:49,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-10-11 00:24:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-10-11 00:24:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-10-11 00:24:49,122 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2021-10-11 00:24:49,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:49,123 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-10-11 00:24:49,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:24:49,123 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-10-11 00:24:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-11 00:24:49,125 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:49,126 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2021-10-11 00:24:49,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-11 00:24:49,326 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:49,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:49,327 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2021-10-11 00:24:49,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:49,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370331931] [2021-10-11 00:24:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:49,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370331931] [2021-10-11 00:24:49,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916827885] [2021-10-11 00:24:49,397 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:49,449 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-11 00:24:49,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:49,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:24:49,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:49,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:49,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-11 00:24:49,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213053217] [2021-10-11 00:24:49,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 00:24:49,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:49,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 00:24:49,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:24:49,551 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2021-10-11 00:24:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:49,585 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-10-11 00:24:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:24:49,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2021-10-11 00:24:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:49,586 INFO L225 Difference]: With dead ends: 44 [2021-10-11 00:24:49,586 INFO L226 Difference]: Without dead ends: 43 [2021-10-11 00:24:49,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:24:49,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-11 00:24:49,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-10-11 00:24:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-11 00:24:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-11 00:24:49,590 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2021-10-11 00:24:49,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:49,590 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-11 00:24:49,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 00:24:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-11 00:24:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-11 00:24:49,591 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:49,591 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2021-10-11 00:24:49,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-11 00:24:49,798 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:49,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:49,798 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2021-10-11 00:24:49,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:49,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986157840] [2021-10-11 00:24:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:49,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986157840] [2021-10-11 00:24:49,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578892742] [2021-10-11 00:24:49,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:49,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 00:24:49,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:50,043 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:50,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:50,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-11 00:24:50,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74251360] [2021-10-11 00:24:50,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 00:24:50,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:50,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:24:50,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:24:50,045 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2021-10-11 00:24:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:50,103 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-10-11 00:24:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:24:50,104 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2021-10-11 00:24:50,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:50,104 INFO L225 Difference]: With dead ends: 47 [2021-10-11 00:24:50,104 INFO L226 Difference]: Without dead ends: 46 [2021-10-11 00:24:50,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:24:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-11 00:24:50,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-10-11 00:24:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-10-11 00:24:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-10-11 00:24:50,109 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2021-10-11 00:24:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:50,109 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-10-11 00:24:50,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 00:24:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-10-11 00:24:50,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-11 00:24:50,110 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:50,110 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2021-10-11 00:24:50,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-11 00:24:50,334 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:50,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:50,335 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2021-10-11 00:24:50,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:50,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852038962] [2021-10-11 00:24:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:50,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852038962] [2021-10-11 00:24:50,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618803715] [2021-10-11 00:24:50,442 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:50,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 00:24:50,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:50,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:50,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-11 00:24:50,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591782650] [2021-10-11 00:24:50,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 00:24:50,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:24:50,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:24:50,613 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2021-10-11 00:24:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:50,648 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-10-11 00:24:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 00:24:50,649 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2021-10-11 00:24:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:50,650 INFO L225 Difference]: With dead ends: 49 [2021-10-11 00:24:50,650 INFO L226 Difference]: Without dead ends: 48 [2021-10-11 00:24:50,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:24:50,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-11 00:24:50,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-10-11 00:24:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 00:24:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-10-11 00:24:50,655 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2021-10-11 00:24:50,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:50,655 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-10-11 00:24:50,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 00:24:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-10-11 00:24:50,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-11 00:24:50,656 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:50,656 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2021-10-11 00:24:50,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:50,882 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:50,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:50,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2021-10-11 00:24:50,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:50,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827839850] [2021-10-11 00:24:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:50,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827839850] [2021-10-11 00:24:50,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989193981] [2021-10-11 00:24:50,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:51,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:24:51,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:51,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:24:51,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:51,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:51,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-11 00:24:51,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992722413] [2021-10-11 00:24:51,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 00:24:51,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:51,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:24:51,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:24:51,192 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2021-10-11 00:24:51,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:51,252 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-10-11 00:24:51,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:24:51,252 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2021-10-11 00:24:51,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:51,253 INFO L225 Difference]: With dead ends: 52 [2021-10-11 00:24:51,253 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 00:24:51,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:24:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 00:24:51,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-10-11 00:24:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-10-11 00:24:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-11 00:24:51,258 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2021-10-11 00:24:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:51,258 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-11 00:24:51,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 00:24:51,258 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-11 00:24:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-11 00:24:51,259 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:51,259 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2021-10-11 00:24:51,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:51,474 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:51,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:51,474 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2021-10-11 00:24:51,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:51,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009448008] [2021-10-11 00:24:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:51,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009448008] [2021-10-11 00:24:51,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037213730] [2021-10-11 00:24:51,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:51,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:24:51,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:51,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 00:24:51,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:51,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:51,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-11 00:24:51,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528729239] [2021-10-11 00:24:51,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 00:24:51,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:51,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 00:24:51,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:24:51,792 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2021-10-11 00:24:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:51,840 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-10-11 00:24:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 00:24:51,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2021-10-11 00:24:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:51,841 INFO L225 Difference]: With dead ends: 54 [2021-10-11 00:24:51,842 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 00:24:51,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:24:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 00:24:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-10-11 00:24:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-10-11 00:24:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-10-11 00:24:51,846 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2021-10-11 00:24:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:51,847 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-10-11 00:24:51,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 00:24:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-10-11 00:24:51,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-11 00:24:51,848 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:51,848 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2021-10-11 00:24:52,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:52,065 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:52,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2021-10-11 00:24:52,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:52,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928278171] [2021-10-11 00:24:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:52,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928278171] [2021-10-11 00:24:52,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232365894] [2021-10-11 00:24:52,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:52,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-11 00:24:52,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:52,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:24:52,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:52,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:52,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-11 00:24:52,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258479820] [2021-10-11 00:24:52,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:24:52,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:52,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:24:52,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:24:52,401 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2021-10-11 00:24:52,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:52,455 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-10-11 00:24:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:24:52,456 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2021-10-11 00:24:52,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:52,457 INFO L225 Difference]: With dead ends: 57 [2021-10-11 00:24:52,457 INFO L226 Difference]: Without dead ends: 56 [2021-10-11 00:24:52,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:24:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-11 00:24:52,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2021-10-11 00:24:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-10-11 00:24:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2021-10-11 00:24:52,468 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2021-10-11 00:24:52,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:52,469 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2021-10-11 00:24:52,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:24:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2021-10-11 00:24:52,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-11 00:24:52,469 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:52,470 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2021-10-11 00:24:52,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-11 00:24:52,686 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:52,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:52,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2021-10-11 00:24:52,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:52,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105973901] [2021-10-11 00:24:52,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:52,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105973901] [2021-10-11 00:24:52,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663345249] [2021-10-11 00:24:52,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:52,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-11 00:24:52,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:52,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:24:52,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:53,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:53,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-11 00:24:53,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579573467] [2021-10-11 00:24:53,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:24:53,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:53,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:24:53,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:24:53,095 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2021-10-11 00:24:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:53,139 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-10-11 00:24:53,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:24:53,139 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2021-10-11 00:24:53,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:53,140 INFO L225 Difference]: With dead ends: 59 [2021-10-11 00:24:53,140 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 00:24:53,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:24:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 00:24:53,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-10-11 00:24:53,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-10-11 00:24:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2021-10-11 00:24:53,155 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2021-10-11 00:24:53,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:53,156 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2021-10-11 00:24:53,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:24:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2021-10-11 00:24:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-11 00:24:53,157 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:53,157 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2021-10-11 00:24:53,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-11 00:24:53,374 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:53,374 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2021-10-11 00:24:53,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:53,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896354314] [2021-10-11 00:24:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:53,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896354314] [2021-10-11 00:24:53,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691634556] [2021-10-11 00:24:53,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:53,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:24:53,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:53,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:24:53,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:53,761 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:53,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:53,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-11 00:24:53,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951783030] [2021-10-11 00:24:53,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 00:24:53,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:53,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 00:24:53,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:24:53,762 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2021-10-11 00:24:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:53,827 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-10-11 00:24:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 00:24:53,827 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2021-10-11 00:24:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:53,829 INFO L225 Difference]: With dead ends: 62 [2021-10-11 00:24:53,829 INFO L226 Difference]: Without dead ends: 61 [2021-10-11 00:24:53,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:24:53,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-11 00:24:53,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-10-11 00:24:53,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 00:24:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-10-11 00:24:53,833 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2021-10-11 00:24:53,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:53,833 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-10-11 00:24:53,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 00:24:53,833 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-10-11 00:24:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-11 00:24:53,834 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:53,834 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2021-10-11 00:24:54,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-11 00:24:54,050 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:54,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2021-10-11 00:24:54,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:54,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888564813] [2021-10-11 00:24:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:54,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888564813] [2021-10-11 00:24:54,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846993288] [2021-10-11 00:24:54,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:54,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:24:54,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:54,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 00:24:54,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:54,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:54,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-11 00:24:54,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596804805] [2021-10-11 00:24:54,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 00:24:54,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:54,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 00:24:54,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:24:54,466 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2021-10-11 00:24:54,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:54,519 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-10-11 00:24:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 00:24:54,519 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2021-10-11 00:24:54,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:54,520 INFO L225 Difference]: With dead ends: 64 [2021-10-11 00:24:54,520 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 00:24:54,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:24:54,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 00:24:54,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-10-11 00:24:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-10-11 00:24:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-10-11 00:24:54,524 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2021-10-11 00:24:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:54,525 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-10-11 00:24:54,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 00:24:54,525 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-10-11 00:24:54,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-11 00:24:54,526 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:54,526 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2021-10-11 00:24:54,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-11 00:24:54,762 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:54,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:54,762 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2021-10-11 00:24:54,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:54,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662471337] [2021-10-11 00:24:54,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:54,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662471337] [2021-10-11 00:24:54,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497853199] [2021-10-11 00:24:54,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:54,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-11 00:24:54,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:54,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 00:24:54,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:55,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:55,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-11 00:24:55,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046715065] [2021-10-11 00:24:55,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-10-11 00:24:55,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:55,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-11 00:24:55,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:24:55,171 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2021-10-11 00:24:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:55,241 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-10-11 00:24:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:24:55,242 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2021-10-11 00:24:55,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:55,243 INFO L225 Difference]: With dead ends: 67 [2021-10-11 00:24:55,243 INFO L226 Difference]: Without dead ends: 66 [2021-10-11 00:24:55,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:24:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-11 00:24:55,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-10-11 00:24:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-10-11 00:24:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2021-10-11 00:24:55,247 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2021-10-11 00:24:55,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:55,247 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2021-10-11 00:24:55,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-10-11 00:24:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2021-10-11 00:24:55,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-11 00:24:55,248 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:55,248 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2021-10-11 00:24:55,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-11 00:24:55,458 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:55,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2021-10-11 00:24:55,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:55,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319789675] [2021-10-11 00:24:55,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:55,588 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:55,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319789675] [2021-10-11 00:24:55,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557237555] [2021-10-11 00:24:55,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:55,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-11 00:24:55,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:55,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 00:24:55,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:55,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:55,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-11 00:24:55,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586948748] [2021-10-11 00:24:55,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-10-11 00:24:55,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:55,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-11 00:24:55,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:24:55,867 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2021-10-11 00:24:55,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:55,914 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-10-11 00:24:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:24:55,915 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2021-10-11 00:24:55,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:55,915 INFO L225 Difference]: With dead ends: 69 [2021-10-11 00:24:55,916 INFO L226 Difference]: Without dead ends: 68 [2021-10-11 00:24:55,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:24:55,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-11 00:24:55,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2021-10-11 00:24:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-10-11 00:24:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-10-11 00:24:55,919 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2021-10-11 00:24:55,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:55,920 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-10-11 00:24:55,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-10-11 00:24:55,920 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-10-11 00:24:55,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-11 00:24:55,924 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:55,924 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2021-10-11 00:24:56,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:56,142 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:56,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:56,142 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2021-10-11 00:24:56,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:56,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516637022] [2021-10-11 00:24:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:56,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516637022] [2021-10-11 00:24:56,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388650702] [2021-10-11 00:24:56,298 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:56,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-11 00:24:56,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:56,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 00:24:56,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:56,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:56,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-11 00:24:56,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116423040] [2021-10-11 00:24:56,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-10-11 00:24:56,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:56,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-11 00:24:56,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:24:56,566 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2021-10-11 00:24:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:56,633 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-10-11 00:24:56,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-11 00:24:56,634 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2021-10-11 00:24:56,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:56,635 INFO L225 Difference]: With dead ends: 72 [2021-10-11 00:24:56,635 INFO L226 Difference]: Without dead ends: 71 [2021-10-11 00:24:56,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:24:56,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-11 00:24:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-10-11 00:24:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 00:24:56,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-10-11 00:24:56,638 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2021-10-11 00:24:56,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:56,639 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-10-11 00:24:56,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-10-11 00:24:56,639 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-10-11 00:24:56,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-11 00:24:56,640 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:56,640 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2021-10-11 00:24:56,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-11 00:24:56,866 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:56,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:56,866 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2021-10-11 00:24:56,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:56,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162911473] [2021-10-11 00:24:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:57,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162911473] [2021-10-11 00:24:57,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150098644] [2021-10-11 00:24:57,020 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:57,055 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-11 00:24:57,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:57,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 00:24:57,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:57,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:57,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-11 00:24:57,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631385853] [2021-10-11 00:24:57,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-10-11 00:24:57,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:57,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-11 00:24:57,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:24:57,295 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2021-10-11 00:24:57,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:57,344 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-10-11 00:24:57,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-11 00:24:57,345 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2021-10-11 00:24:57,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:57,345 INFO L225 Difference]: With dead ends: 74 [2021-10-11 00:24:57,346 INFO L226 Difference]: Without dead ends: 73 [2021-10-11 00:24:57,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:24:57,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-11 00:24:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2021-10-11 00:24:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-10-11 00:24:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-10-11 00:24:57,349 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2021-10-11 00:24:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:57,349 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-10-11 00:24:57,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-10-11 00:24:57,350 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-10-11 00:24:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-11 00:24:57,350 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:57,350 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2021-10-11 00:24:57,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:57,570 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:57,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:57,570 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2021-10-11 00:24:57,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:57,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453873316] [2021-10-11 00:24:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:57,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453873316] [2021-10-11 00:24:57,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97555429] [2021-10-11 00:24:57,750 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:57,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 00:24:57,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:58,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:58,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-11 00:24:58,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265999936] [2021-10-11 00:24:58,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-10-11 00:24:58,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:58,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-11 00:24:58,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:24:58,021 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2021-10-11 00:24:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:58,092 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2021-10-11 00:24:58,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-11 00:24:58,093 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2021-10-11 00:24:58,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:58,094 INFO L225 Difference]: With dead ends: 77 [2021-10-11 00:24:58,094 INFO L226 Difference]: Without dead ends: 76 [2021-10-11 00:24:58,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:24:58,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-11 00:24:58,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2021-10-11 00:24:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-10-11 00:24:58,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2021-10-11 00:24:58,099 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2021-10-11 00:24:58,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:58,099 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2021-10-11 00:24:58,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-10-11 00:24:58,099 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2021-10-11 00:24:58,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-11 00:24:58,100 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:58,100 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2021-10-11 00:24:58,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-11 00:24:58,314 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:58,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:58,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2021-10-11 00:24:58,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:58,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22331367] [2021-10-11 00:24:58,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:58,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22331367] [2021-10-11 00:24:58,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957438326] [2021-10-11 00:24:58,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:58,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 00:24:58,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:58,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:58,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-11 00:24:58,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712143552] [2021-10-11 00:24:58,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-10-11 00:24:58,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:58,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-11 00:24:58,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:24:58,771 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2021-10-11 00:24:58,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:58,822 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-10-11 00:24:58,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-11 00:24:58,823 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2021-10-11 00:24:58,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:58,823 INFO L225 Difference]: With dead ends: 79 [2021-10-11 00:24:58,823 INFO L226 Difference]: Without dead ends: 78 [2021-10-11 00:24:58,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:24:58,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-11 00:24:58,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-10-11 00:24:58,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-10-11 00:24:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2021-10-11 00:24:58,827 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2021-10-11 00:24:58,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:58,828 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2021-10-11 00:24:58,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-10-11 00:24:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2021-10-11 00:24:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-11 00:24:58,829 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:58,829 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2021-10-11 00:24:59,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:59,042 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:59,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:59,042 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2021-10-11 00:24:59,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:59,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498101271] [2021-10-11 00:24:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:59,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498101271] [2021-10-11 00:24:59,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963840925] [2021-10-11 00:24:59,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:24:59,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:24:59,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:24:59,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-11 00:24:59,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:24:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:59,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:24:59,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-10-11 00:24:59,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298820921] [2021-10-11 00:24:59,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-10-11 00:24:59,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:59,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-11 00:24:59,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-11 00:24:59,563 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2021-10-11 00:24:59,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:59,636 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2021-10-11 00:24:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-11 00:24:59,637 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2021-10-11 00:24:59,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:59,638 INFO L225 Difference]: With dead ends: 82 [2021-10-11 00:24:59,638 INFO L226 Difference]: Without dead ends: 81 [2021-10-11 00:24:59,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-11 00:24:59,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-11 00:24:59,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-10-11 00:24:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-10-11 00:24:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-10-11 00:24:59,642 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2021-10-11 00:24:59,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:59,642 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-10-11 00:24:59,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-10-11 00:24:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-10-11 00:24:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-11 00:24:59,643 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:59,643 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2021-10-11 00:24:59,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-11 00:24:59,870 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:59,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:59,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2021-10-11 00:24:59,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:59,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463618252] [2021-10-11 00:24:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:00,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463618252] [2021-10-11 00:25:00,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735033716] [2021-10-11 00:25:00,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:00,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:25:00,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:25:00,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-11 00:25:00,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:00,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:25:00,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-10-11 00:25:00,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482780848] [2021-10-11 00:25:00,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-10-11 00:25:00,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:00,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-11 00:25:00,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-11 00:25:00,387 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2021-10-11 00:25:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:00,443 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-10-11 00:25:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-11 00:25:00,444 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2021-10-11 00:25:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:00,445 INFO L225 Difference]: With dead ends: 84 [2021-10-11 00:25:00,445 INFO L226 Difference]: Without dead ends: 83 [2021-10-11 00:25:00,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-11 00:25:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-11 00:25:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-10-11 00:25:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-10-11 00:25:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-10-11 00:25:00,451 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2021-10-11 00:25:00,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:00,452 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-10-11 00:25:00,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-10-11 00:25:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-10-11 00:25:00,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 00:25:00,453 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:00,453 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2021-10-11 00:25:00,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:00,678 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:25:00,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:00,678 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2021-10-11 00:25:00,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:00,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993146272] [2021-10-11 00:25:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:00,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993146272] [2021-10-11 00:25:00,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377676772] [2021-10-11 00:25:00,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:00,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-10-11 00:25:00,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:25:00,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 00:25:00,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:01,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:25:01,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-10-11 00:25:01,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097866647] [2021-10-11 00:25:01,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-10-11 00:25:01,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:01,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-11 00:25:01,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:25:01,261 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2021-10-11 00:25:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:01,345 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2021-10-11 00:25:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-11 00:25:01,346 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2021-10-11 00:25:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:01,347 INFO L225 Difference]: With dead ends: 87 [2021-10-11 00:25:01,347 INFO L226 Difference]: Without dead ends: 86 [2021-10-11 00:25:01,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:25:01,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-11 00:25:01,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2021-10-11 00:25:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-10-11 00:25:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2021-10-11 00:25:01,351 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2021-10-11 00:25:01,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:01,351 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2021-10-11 00:25:01,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-10-11 00:25:01,351 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2021-10-11 00:25:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 00:25:01,352 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:01,352 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2021-10-11 00:25:01,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-11 00:25:01,566 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:25:01,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:01,566 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2021-10-11 00:25:01,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:01,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665156219] [2021-10-11 00:25:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:01,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665156219] [2021-10-11 00:25:01,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774400286] [2021-10-11 00:25:01,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:01,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-10-11 00:25:01,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:25:01,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 00:25:01,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:02,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:25:02,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-10-11 00:25:02,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519941803] [2021-10-11 00:25:02,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-10-11 00:25:02,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:02,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-11 00:25:02,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:25:02,163 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2021-10-11 00:25:02,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:02,211 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2021-10-11 00:25:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-11 00:25:02,212 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2021-10-11 00:25:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:02,212 INFO L225 Difference]: With dead ends: 89 [2021-10-11 00:25:02,213 INFO L226 Difference]: Without dead ends: 88 [2021-10-11 00:25:02,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-11 00:25:02,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-11 00:25:02,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2021-10-11 00:25:02,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-10-11 00:25:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2021-10-11 00:25:02,217 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2021-10-11 00:25:02,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:02,217 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2021-10-11 00:25:02,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-10-11 00:25:02,217 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2021-10-11 00:25:02,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-11 00:25:02,218 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:02,218 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2021-10-11 00:25:02,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:02,430 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:25:02,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2021-10-11 00:25:02,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:02,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878702165] [2021-10-11 00:25:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:02,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878702165] [2021-10-11 00:25:02,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152316156] [2021-10-11 00:25:02,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:02,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:25:02,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:25:02,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 00:25:02,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:03,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:25:03,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-11 00:25:03,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179455165] [2021-10-11 00:25:03,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-10-11 00:25:03,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:03,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-11 00:25:03,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:25:03,020 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2021-10-11 00:25:03,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:03,108 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2021-10-11 00:25:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-11 00:25:03,109 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2021-10-11 00:25:03,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:03,110 INFO L225 Difference]: With dead ends: 92 [2021-10-11 00:25:03,110 INFO L226 Difference]: Without dead ends: 91 [2021-10-11 00:25:03,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:25:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-11 00:25:03,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-10-11 00:25:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2021-10-11 00:25:03,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2021-10-11 00:25:03,114 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2021-10-11 00:25:03,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:03,114 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2021-10-11 00:25:03,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-10-11 00:25:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2021-10-11 00:25:03,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-11 00:25:03,115 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:03,116 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2021-10-11 00:25:03,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-11 00:25:03,331 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:25:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2021-10-11 00:25:03,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:03,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746176925] [2021-10-11 00:25:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:03,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746176925] [2021-10-11 00:25:03,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340346700] [2021-10-11 00:25:03,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:03,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 00:25:03,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:25:03,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 00:25:03,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:03,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:25:03,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-11 00:25:03,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264637600] [2021-10-11 00:25:03,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-10-11 00:25:03,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:03,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-11 00:25:03,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:25:03,947 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2021-10-11 00:25:04,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:04,009 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2021-10-11 00:25:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-11 00:25:04,009 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2021-10-11 00:25:04,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:04,010 INFO L225 Difference]: With dead ends: 94 [2021-10-11 00:25:04,010 INFO L226 Difference]: Without dead ends: 93 [2021-10-11 00:25:04,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-11 00:25:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-11 00:25:04,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-10-11 00:25:04,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-10-11 00:25:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-10-11 00:25:04,014 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2021-10-11 00:25:04,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:04,015 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-10-11 00:25:04,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-10-11 00:25:04,015 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-10-11 00:25:04,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-11 00:25:04,016 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:04,016 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2021-10-11 00:25:04,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-11 00:25:04,230 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:25:04,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:04,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2021-10-11 00:25:04,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:04,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887927505] [2021-10-11 00:25:04,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:04,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887927505] [2021-10-11 00:25:04,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418318024] [2021-10-11 00:25:04,488 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:04,532 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-11 00:25:04,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:25:04,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 00:25:04,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:04,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:25:04,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-11 00:25:04,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542761036] [2021-10-11 00:25:04,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-10-11 00:25:04,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:04,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-11 00:25:04,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-11 00:25:04,846 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2021-10-11 00:25:04,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:04,937 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2021-10-11 00:25:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-11 00:25:04,937 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2021-10-11 00:25:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:04,938 INFO L225 Difference]: With dead ends: 97 [2021-10-11 00:25:04,938 INFO L226 Difference]: Without dead ends: 96 [2021-10-11 00:25:04,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-11 00:25:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-11 00:25:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2021-10-11 00:25:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-10-11 00:25:04,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2021-10-11 00:25:04,942 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2021-10-11 00:25:04,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:04,942 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2021-10-11 00:25:04,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-10-11 00:25:04,943 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2021-10-11 00:25:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-11 00:25:04,943 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:04,944 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2021-10-11 00:25:05,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-11 00:25:05,154 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:25:05,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:05,154 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2021-10-11 00:25:05,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:05,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675564320] [2021-10-11 00:25:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:05,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675564320] [2021-10-11 00:25:05,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048234139] [2021-10-11 00:25:05,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:05,481 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-11 00:25:05,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:25:05,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 00:25:05,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:05,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:25:05,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-11 00:25:05,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645230538] [2021-10-11 00:25:05,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-10-11 00:25:05,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:05,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-11 00:25:05,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-11 00:25:05,870 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2021-10-11 00:25:05,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:05,953 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2021-10-11 00:25:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-11 00:25:05,953 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2021-10-11 00:25:05,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:05,954 INFO L225 Difference]: With dead ends: 99 [2021-10-11 00:25:05,955 INFO L226 Difference]: Without dead ends: 98 [2021-10-11 00:25:05,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-11 00:25:05,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-11 00:25:05,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2021-10-11 00:25:05,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-10-11 00:25:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2021-10-11 00:25:05,959 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2021-10-11 00:25:05,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:05,960 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2021-10-11 00:25:05,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-10-11 00:25:05,960 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2021-10-11 00:25:05,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-11 00:25:05,961 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:05,961 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2021-10-11 00:25:06,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-11 00:25:06,190 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:25:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:06,190 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2021-10-11 00:25:06,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:06,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586389722] [2021-10-11 00:25:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:06,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586389722] [2021-10-11 00:25:06,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12900912] [2021-10-11 00:25:06,476 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:06,520 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-11 00:25:06,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:25:06,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-11 00:25:06,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:06,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:25:06,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-11 00:25:06,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527753062] [2021-10-11 00:25:06,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-10-11 00:25:06,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:06,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-11 00:25:06,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-11 00:25:06,914 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2021-10-11 00:25:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:07,011 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2021-10-11 00:25:07,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-11 00:25:07,011 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2021-10-11 00:25:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:07,012 INFO L225 Difference]: With dead ends: 102 [2021-10-11 00:25:07,012 INFO L226 Difference]: Without dead ends: 101 [2021-10-11 00:25:07,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-11 00:25:07,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-11 00:25:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2021-10-11 00:25:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2021-10-11 00:25:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2021-10-11 00:25:07,016 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2021-10-11 00:25:07,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:07,017 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2021-10-11 00:25:07,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-10-11 00:25:07,017 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2021-10-11 00:25:07,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-11 00:25:07,018 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:07,018 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2021-10-11 00:25:07,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-11 00:25:07,234 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:25:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:07,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2021-10-11 00:25:07,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:07,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291380951] [2021-10-11 00:25:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:07,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291380951] [2021-10-11 00:25:07,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482099986] [2021-10-11 00:25:07,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:07,566 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-11 00:25:07,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:25:07,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-11 00:25:07,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:07,920 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:07,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:25:07,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-11 00:25:07,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753939259] [2021-10-11 00:25:07,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-10-11 00:25:07,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:07,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-11 00:25:07,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-11 00:25:07,922 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2021-10-11 00:25:07,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:07,995 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2021-10-11 00:25:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-11 00:25:07,995 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2021-10-11 00:25:07,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:07,997 INFO L225 Difference]: With dead ends: 104 [2021-10-11 00:25:07,998 INFO L226 Difference]: Without dead ends: 103 [2021-10-11 00:25:07,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-11 00:25:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-11 00:25:08,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-10-11 00:25:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-10-11 00:25:08,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2021-10-11 00:25:08,002 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2021-10-11 00:25:08,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:08,002 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2021-10-11 00:25:08,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-10-11 00:25:08,003 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2021-10-11 00:25:08,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-11 00:25:08,004 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:08,004 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2021-10-11 00:25:08,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-11 00:25:08,226 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:25:08,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:08,226 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2021-10-11 00:25:08,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:08,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089181875] [2021-10-11 00:25:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:08,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089181875] [2021-10-11 00:25:08,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726420381] [2021-10-11 00:25:08,513 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:25:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:25:08,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 00:25:08,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:25:08,940 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:25:08,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:25:08,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-10-11 00:25:08,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501014951] [2021-10-11 00:25:08,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-10-11 00:25:08,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:25:08,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-11 00:25:08,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-11 00:25:08,942 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2021-10-11 00:25:09,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:25:09,042 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2021-10-11 00:25:09,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-11 00:25:09,043 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2021-10-11 00:25:09,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:25:09,043 INFO L225 Difference]: With dead ends: 107 [2021-10-11 00:25:09,044 INFO L226 Difference]: Without dead ends: 106 [2021-10-11 00:25:09,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-11 00:25:09,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-11 00:25:09,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2021-10-11 00:25:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-10-11 00:25:09,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2021-10-11 00:25:09,048 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2021-10-11 00:25:09,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:25:09,048 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2021-10-11 00:25:09,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-10-11 00:25:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2021-10-11 00:25:09,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-11 00:25:09,049 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:25:09,050 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2021-10-11 00:25:09,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-10-11 00:25:09,274 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:25:09,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:25:09,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2021-10-11 00:25:09,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:25:09,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666863220] [2021-10-11 00:25:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:25:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:25:09,297 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:25:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:25:09,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:25:09,326 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:25:09,326 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:25:09,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-11 00:25:09,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:25:09 BoogieIcfgContainer [2021-10-11 00:25:09,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:25:09,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:25:09,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:25:09,369 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:25:09,370 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:43" (3/4) ... [2021-10-11 00:25:09,371 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:25:09,444 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d726a135-710b-49b4-ac50-1024ec3a5882/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:25:09,445 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:25:09,446 INFO L168 Benchmark]: Toolchain (without parser) took 26086.69 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 48.4 MB in the beginning and 113.1 MB in the end (delta: -64.7 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:09,447 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 88.1 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:25:09,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.40 ms. Allocated memory is still 88.1 MB. Free memory was 48.2 MB in the beginning and 65.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:09,448 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.76 ms. Allocated memory is still 88.1 MB. Free memory was 65.7 MB in the beginning and 64.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:09,449 INFO L168 Benchmark]: Boogie Preprocessor took 15.24 ms. Allocated memory is still 88.1 MB. Free memory was 64.4 MB in the beginning and 63.5 MB in the end (delta: 917.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:25:09,449 INFO L168 Benchmark]: RCFGBuilder took 202.25 ms. Allocated memory is still 88.1 MB. Free memory was 63.5 MB in the beginning and 54.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:09,450 INFO L168 Benchmark]: TraceAbstraction took 25563.40 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 54.4 MB in the beginning and 115.2 MB in the end (delta: -60.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:09,450 INFO L168 Benchmark]: Witness Printer took 76.08 ms. Allocated memory is still 188.7 MB. Free memory was 115.2 MB in the beginning and 113.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:25:09,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 88.1 MB. Free memory is still 64.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 185.40 ms. Allocated memory is still 88.1 MB. Free memory was 48.2 MB in the beginning and 65.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.76 ms. Allocated memory is still 88.1 MB. Free memory was 65.7 MB in the beginning and 64.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.24 ms. Allocated memory is still 88.1 MB. Free memory was 64.4 MB in the beginning and 63.5 MB in the end (delta: 917.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 202.25 ms. Allocated memory is still 88.1 MB. Free memory was 63.5 MB in the beginning and 54.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25563.40 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 54.4 MB in the beginning and 115.2 MB in the end (delta: -60.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. * Witness Printer took 76.08 ms. Allocated memory is still 188.7 MB. Free memory was 115.2 MB in the beginning and 113.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] 3*y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.4s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1318 SDs, 0 SdLazy, 1445 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 41 MinimizatonAttempts, 39 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 4022 NumberOfCodeBlocks, 4022 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 3844 ConstructedInterpolants, 0 QuantifiedInterpolants, 753036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3617 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 0/23218 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...