./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:51:39,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:51:39,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:51:39,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:51:39,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:51:39,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:51:39,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:51:39,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:51:39,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:51:39,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:51:39,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:51:39,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:51:39,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:51:39,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:51:39,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:51:39,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:51:39,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:51:39,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:51:39,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:51:39,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:51:39,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:51:39,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:51:39,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:51:39,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:51:39,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:51:39,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:51:39,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:51:39,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:51:39,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:51:39,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:51:39,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:51:39,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:51:39,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:51:39,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:51:39,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:51:39,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:51:39,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:51:39,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:51:39,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:51:39,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:51:39,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:51:39,549 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-13 18:51:39,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:51:39,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:51:39,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:51:39,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:51:39,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:51:39,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:51:39,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:51:39,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:51:39,616 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:51:39,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:51:39,617 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:51:39,618 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:51:39,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:51:39,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:51:39,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:51:39,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:51:39,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:51:39,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:51:39,619 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-13 18:51:39,620 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:51:39,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:51:39,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:51:39,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:51:39,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:51:39,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:51:39,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:51:39,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:51:39,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:51:39,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:51:39,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:51:39,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:51:39,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:51:39,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:51:39,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:51:39,626 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_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 [2021-11-13 18:51:39,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:51:39,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:51:39,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:51:39,923 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:51:39,924 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:51:39,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2021-11-13 18:51:39,994 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/data/af05ae43c/54fe2ea4a55849ab8c82fd473f018a97/FLAGca03c74c4 [2021-11-13 18:51:40,590 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:51:40,591 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2021-11-13 18:51:40,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/data/af05ae43c/54fe2ea4a55849ab8c82fd473f018a97/FLAGca03c74c4 [2021-11-13 18:51:40,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/data/af05ae43c/54fe2ea4a55849ab8c82fd473f018a97 [2021-11-13 18:51:40,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:51:40,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:51:40,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:51:40,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:51:40,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:51:40,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:51:40" (1/1) ... [2021-11-13 18:51:40,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c48097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:40, skipping insertion in model container [2021-11-13 18:51:40,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:51:40" (1/1) ... [2021-11-13 18:51:41,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:51:41,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:51:41,440 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i[33021,33034] [2021-11-13 18:51:41,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:51:41,572 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:51:41,602 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i[33021,33034] [2021-11-13 18:51:41,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:51:41,807 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:51:41,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41 WrapperNode [2021-11-13 18:51:41,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:51:41,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:51:41,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:51:41,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:51:41,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:41,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:41,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:51:41,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:51:41,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:51:41,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:51:41,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:41,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:42,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:42,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:42,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:42,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:42,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:42,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:51:42,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:51:42,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:51:42,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:51:42,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41" (1/1) ... [2021-11-13 18:51:42,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:51:42,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:42,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:51:42,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:51:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:51:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:51:42,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:51:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:51:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:51:42,250 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:51:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:51:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:51:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:51:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:51:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:51:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:51:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:51:42,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:51:44,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:51:44,174 INFO L299 CfgBuilder]: Removed 77 assume(true) statements. [2021-11-13 18:51:44,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:51:44 BoogieIcfgContainer [2021-11-13 18:51:44,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:51:44,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:51:44,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:51:44,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:51:44,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:51:40" (1/3) ... [2021-11-13 18:51:44,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e36a7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:51:44, skipping insertion in model container [2021-11-13 18:51:44,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:51:41" (2/3) ... [2021-11-13 18:51:44,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e36a7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:51:44, skipping insertion in model container [2021-11-13 18:51:44,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:51:44" (3/3) ... [2021-11-13 18:51:44,188 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-3.i [2021-11-13 18:51:44,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:51:44,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-13 18:51:44,247 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:51:44,253 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:51:44,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 18:51:44,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 18:51:44,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 18:51:44,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:44,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:51:44,288 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:44,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:44,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2021-11-13 18:51:44,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:44,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866998435] [2021-11-13 18:51:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:44,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:44,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:44,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866998435] [2021-11-13 18:51:44,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866998435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:51:44,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:51:44,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:51:44,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266982514] [2021-11-13 18:51:44,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:44,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:51:44,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:44,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:51:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:51:44,512 INFO L87 Difference]: Start difference. First operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:44,637 INFO L93 Difference]: Finished difference Result 715 states and 1205 transitions. [2021-11-13 18:51:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:51:44,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-13 18:51:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:44,654 INFO L225 Difference]: With dead ends: 715 [2021-11-13 18:51:44,654 INFO L226 Difference]: Without dead ends: 392 [2021-11-13 18:51:44,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:51:44,663 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 217 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.80ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:44,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 725 Invalid, 14 Unknown, 0 Unchecked, 9.13ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 37.80ms Time] [2021-11-13 18:51:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-13 18:51:44,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2021-11-13 18:51:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 211 states have internal predecessors, (262), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 18:51:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 294 transitions. [2021-11-13 18:51:44,727 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 294 transitions. Word has length 6 [2021-11-13 18:51:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:44,728 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 294 transitions. [2021-11-13 18:51:44,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 294 transitions. [2021-11-13 18:51:44,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 18:51:44,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:44,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:44,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:51:44,735 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:44,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:44,736 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2021-11-13 18:51:44,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:44,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138675764] [2021-11-13 18:51:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:44,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:44,772 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:44,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171847970] [2021-11-13 18:51:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:44,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:44,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:44,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:44,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:51:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:45,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:51:45,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:45,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:51:45,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:45,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138675764] [2021-11-13 18:51:45,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:45,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171847970] [2021-11-13 18:51:45,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171847970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:51:45,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:51:45,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:51:45,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995212589] [2021-11-13 18:51:45,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:45,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:51:45,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:51:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:51:45,375 INFO L87 Difference]: Start difference. First operand 220 states and 294 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:45,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:45,463 INFO L93 Difference]: Finished difference Result 455 states and 613 transitions. [2021-11-13 18:51:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:51:45,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-13 18:51:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:45,467 INFO L225 Difference]: With dead ends: 455 [2021-11-13 18:51:45,467 INFO L226 Difference]: Without dead ends: 241 [2021-11-13 18:51:45,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:51:45,469 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.28ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.30ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:45,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 3.28ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 65.30ms Time] [2021-11-13 18:51:45,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-13 18:51:45,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-11-13 18:51:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 217 states have (on average 1.2995391705069124) internal successors, (282), 231 states have internal predecessors, (282), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 18:51:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2021-11-13 18:51:45,504 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 103 [2021-11-13 18:51:45,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:45,504 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2021-11-13 18:51:45,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2021-11-13 18:51:45,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 18:51:45,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:45,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:45,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:45,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:45,726 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:45,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:45,727 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2021-11-13 18:51:45,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:45,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270989451] [2021-11-13 18:51:45,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:45,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:45,753 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:45,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110541831] [2021-11-13 18:51:45,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:45,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:45,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:45,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:45,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:51:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:46,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:51:46,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:46,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:51:46,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:46,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270989451] [2021-11-13 18:51:46,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:46,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110541831] [2021-11-13 18:51:46,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110541831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:51:46,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:51:46,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:51:46,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694076572] [2021-11-13 18:51:46,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:46,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:51:46,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:51:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:51:46,197 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:46,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:46,271 INFO L93 Difference]: Finished difference Result 495 states and 653 transitions. [2021-11-13 18:51:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:51:46,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-13 18:51:46,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:46,274 INFO L225 Difference]: With dead ends: 495 [2021-11-13 18:51:46,274 INFO L226 Difference]: Without dead ends: 261 [2021-11-13 18:51:46,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:51:46,276 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.28ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:46,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 60.28ms Time] [2021-11-13 18:51:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-13 18:51:46,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-11-13 18:51:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 237 states have (on average 1.2742616033755274) internal successors, (302), 251 states have internal predecessors, (302), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 18:51:46,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2021-11-13 18:51:46,292 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 103 [2021-11-13 18:51:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:46,292 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2021-11-13 18:51:46,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2021-11-13 18:51:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 18:51:46,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:46,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:46,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:46,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:46,519 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:46,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:46,519 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2021-11-13 18:51:46,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:46,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326568019] [2021-11-13 18:51:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:46,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:46,543 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:46,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718992529] [2021-11-13 18:51:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:46,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:46,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:46,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:46,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:51:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:46,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:51:46,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:47,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:51:47,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:47,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326568019] [2021-11-13 18:51:47,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:47,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718992529] [2021-11-13 18:51:47,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718992529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:51:47,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:51:47,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:51:47,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583517492] [2021-11-13 18:51:47,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:47,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:51:47,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:47,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:51:47,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:51:47,034 INFO L87 Difference]: Start difference. First operand 260 states and 334 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:47,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:47,120 INFO L93 Difference]: Finished difference Result 505 states and 653 transitions. [2021-11-13 18:51:47,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:51:47,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-13 18:51:47,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:47,123 INFO L225 Difference]: With dead ends: 505 [2021-11-13 18:51:47,123 INFO L226 Difference]: Without dead ends: 251 [2021-11-13 18:51:47,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:51:47,126 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 239 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.40ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.90ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:47,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 562 Invalid, 66 Unknown, 0 Unchecked, 3.40ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 62.90ms Time] [2021-11-13 18:51:47,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-13 18:51:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2021-11-13 18:51:47,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 237 states have internal predecessors, (281), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 18:51:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2021-11-13 18:51:47,142 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 103 [2021-11-13 18:51:47,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:47,142 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2021-11-13 18:51:47,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:47,143 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2021-11-13 18:51:47,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 18:51:47,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:47,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:47,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:47,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:47,373 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:47,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:47,373 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2021-11-13 18:51:47,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:47,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164717964] [2021-11-13 18:51:47,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:47,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:47,398 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:47,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415149253] [2021-11-13 18:51:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:47,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:47,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:47,400 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:47,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:51:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:47,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:51:47,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:47,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:51:47,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:47,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164717964] [2021-11-13 18:51:47,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:47,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415149253] [2021-11-13 18:51:47,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415149253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:51:47,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:51:47,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:51:47,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175403500] [2021-11-13 18:51:47,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:47,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:51:47,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:51:47,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:51:47,855 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:47,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:47,955 INFO L93 Difference]: Finished difference Result 566 states and 720 transitions. [2021-11-13 18:51:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:51:47,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-13 18:51:47,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:47,959 INFO L225 Difference]: With dead ends: 566 [2021-11-13 18:51:47,959 INFO L226 Difference]: Without dead ends: 326 [2021-11-13 18:51:47,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:51:47,961 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 232 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.96ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.07ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:47,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 857 Invalid, 66 Unknown, 0 Unchecked, 3.96ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 72.07ms Time] [2021-11-13 18:51:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-13 18:51:47,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 232. [2021-11-13 18:51:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 209 states have (on average 1.244019138755981) internal successors, (260), 223 states have internal predecessors, (260), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 18:51:47,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 292 transitions. [2021-11-13 18:51:47,976 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 292 transitions. Word has length 103 [2021-11-13 18:51:47,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:47,976 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 292 transitions. [2021-11-13 18:51:47,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:47,977 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 292 transitions. [2021-11-13 18:51:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 18:51:47,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:47,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:48,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:48,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:48,200 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:48,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:48,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2021-11-13 18:51:48,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:48,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760151744] [2021-11-13 18:51:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:48,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:48,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:48,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738952994] [2021-11-13 18:51:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:48,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:48,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:48,238 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:48,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:51:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:48,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:51:48,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:48,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:51:48,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:48,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760151744] [2021-11-13 18:51:48,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:48,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738952994] [2021-11-13 18:51:48,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738952994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:51:48,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:51:48,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:51:48,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687573580] [2021-11-13 18:51:48,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:48,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:51:48,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:51:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:51:48,811 INFO L87 Difference]: Start difference. First operand 232 states and 292 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:48,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:48,882 INFO L93 Difference]: Finished difference Result 416 states and 516 transitions. [2021-11-13 18:51:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:51:48,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-13 18:51:48,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:48,886 INFO L225 Difference]: With dead ends: 416 [2021-11-13 18:51:48,886 INFO L226 Difference]: Without dead ends: 415 [2021-11-13 18:51:48,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:51:48,888 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 105 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:48,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 936 Invalid, 26 Unknown, 0 Unchecked, 3.56ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 45.13ms Time] [2021-11-13 18:51:48,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-13 18:51:48,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 413. [2021-11-13 18:51:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 384 states have (on average 1.2213541666666667) internal successors, (469), 398 states have internal predecessors, (469), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:51:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 513 transitions. [2021-11-13 18:51:48,908 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 513 transitions. Word has length 103 [2021-11-13 18:51:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:48,909 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 513 transitions. [2021-11-13 18:51:48,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 513 transitions. [2021-11-13 18:51:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-13 18:51:48,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:48,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:48,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-13 18:51:49,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:49,133 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:49,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2021-11-13 18:51:49,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:49,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652968396] [2021-11-13 18:51:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:49,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:49,152 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:49,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115354144] [2021-11-13 18:51:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:49,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:49,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:49,154 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:49,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:51:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:49,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:51:49,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:49,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:51:49,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:49,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652968396] [2021-11-13 18:51:49,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:49,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115354144] [2021-11-13 18:51:49,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115354144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:51:49,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:51:49,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:51:49,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444623948] [2021-11-13 18:51:49,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:49,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:51:49,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:51:49,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:51:49,636 INFO L87 Difference]: Start difference. First operand 413 states and 513 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:49,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:49,676 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2021-11-13 18:51:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:51:49,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-13 18:51:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:49,680 INFO L225 Difference]: With dead ends: 413 [2021-11-13 18:51:49,680 INFO L226 Difference]: Without dead ends: 412 [2021-11-13 18:51:49,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:51:49,681 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 135 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.84ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.56ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:49,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 553 Invalid, 19 Unknown, 0 Unchecked, 3.84ms Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 19.56ms Time] [2021-11-13 18:51:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-13 18:51:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-11-13 18:51:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 384 states have (on average 1.21875) internal successors, (468), 397 states have internal predecessors, (468), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-13 18:51:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 512 transitions. [2021-11-13 18:51:49,705 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 512 transitions. Word has length 104 [2021-11-13 18:51:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:49,706 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 512 transitions. [2021-11-13 18:51:49,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 512 transitions. [2021-11-13 18:51:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-13 18:51:49,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:49,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:49,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:49,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:49,937 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:49,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1365413568, now seen corresponding path program 1 times [2021-11-13 18:51:49,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:49,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42224453] [2021-11-13 18:51:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:49,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:49,953 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:49,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727945332] [2021-11-13 18:51:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:49,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:49,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:49,954 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:49,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:51:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:50,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:51:50,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:50,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:51:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:50,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:50,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42224453] [2021-11-13 18:51:50,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:50,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727945332] [2021-11-13 18:51:50,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727945332] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:51:50,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:51:50,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-13 18:51:50,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736562276] [2021-11-13 18:51:50,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:51:50,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:51:50,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:50,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:51:50,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:51:50,659 INFO L87 Difference]: Start difference. First operand 412 states and 512 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:50,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:50,806 INFO L93 Difference]: Finished difference Result 634 states and 796 transitions. [2021-11-13 18:51:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:51:50,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-13 18:51:50,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:50,811 INFO L225 Difference]: With dead ends: 634 [2021-11-13 18:51:50,811 INFO L226 Difference]: Without dead ends: 600 [2021-11-13 18:51:50,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:51:50,814 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 647 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.57ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.24ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:50,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1523 Invalid, 74 Unknown, 0 Unchecked, 7.57ms Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 87.24ms Time] [2021-11-13 18:51:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-11-13 18:51:50,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-11-13 18:51:50,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 566 states have (on average 1.2102473498233215) internal successors, (685), 579 states have internal predecessors, (685), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 18:51:50,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 741 transitions. [2021-11-13 18:51:50,860 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 741 transitions. Word has length 108 [2021-11-13 18:51:50,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:50,860 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 741 transitions. [2021-11-13 18:51:50,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:50,861 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 741 transitions. [2021-11-13 18:51:50,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-13 18:51:50,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:50,862 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:50,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:51,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:51,063 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:51,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2021-11-13 18:51:51,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:51,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160242147] [2021-11-13 18:51:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:51,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:51,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:51,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700756101] [2021-11-13 18:51:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:51,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:51,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:51,081 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:51,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 18:51:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:51,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:51:51,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:51:51,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:51:51,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:51,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160242147] [2021-11-13 18:51:51,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:51,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700756101] [2021-11-13 18:51:51,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700756101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:51:51,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:51:51,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:51:51,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971017663] [2021-11-13 18:51:51,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:51,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:51:51,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:51,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:51:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:51:51,787 INFO L87 Difference]: Start difference. First operand 600 states and 741 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:51,872 INFO L93 Difference]: Finished difference Result 1051 states and 1305 transitions. [2021-11-13 18:51:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:51:51,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-13 18:51:51,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:51,879 INFO L225 Difference]: With dead ends: 1051 [2021-11-13 18:51:51,879 INFO L226 Difference]: Without dead ends: 598 [2021-11-13 18:51:51,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:51:51,882 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 65 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.27ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:51,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 536 Invalid, 8 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 62.27ms Time] [2021-11-13 18:51:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-13 18:51:51,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-13 18:51:51,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 577 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 18:51:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 738 transitions. [2021-11-13 18:51:51,910 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 738 transitions. Word has length 108 [2021-11-13 18:51:51,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:51,910 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 738 transitions. [2021-11-13 18:51:51,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:51:51,910 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 738 transitions. [2021-11-13 18:51:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-13 18:51:51,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:51,912 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:51,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:52,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:52,127 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:52,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:52,127 INFO L85 PathProgramCache]: Analyzing trace with hash -353330685, now seen corresponding path program 1 times [2021-11-13 18:51:52,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:52,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312582410] [2021-11-13 18:51:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:52,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:52,157 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:52,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052165498] [2021-11-13 18:51:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:52,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:52,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:52,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:52,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 18:51:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:52,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:51:52,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 18:51:52,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:51:52,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:52,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312582410] [2021-11-13 18:51:52,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:52,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052165498] [2021-11-13 18:51:52,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052165498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:51:52,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:51:52,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:51:52,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869606137] [2021-11-13 18:51:52,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:52,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:51:52,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:52,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:51:52,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:51:52,716 INFO L87 Difference]: Start difference. First operand 598 states and 738 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:51:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:52,766 INFO L93 Difference]: Finished difference Result 1136 states and 1408 transitions. [2021-11-13 18:51:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:51:52,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 123 [2021-11-13 18:51:52,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:52,773 INFO L225 Difference]: With dead ends: 1136 [2021-11-13 18:51:52,774 INFO L226 Difference]: Without dead ends: 596 [2021-11-13 18:51:52,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:51:52,775 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 15 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.73ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.32ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:52,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 534 Invalid, 7 Unknown, 0 Unchecked, 1.73ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 28.32ms Time] [2021-11-13 18:51:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-13 18:51:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-13 18:51:52,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 562 states have (on average 1.208185053380783) internal successors, (679), 575 states have internal predecessors, (679), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-13 18:51:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 735 transitions. [2021-11-13 18:51:52,804 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 735 transitions. Word has length 123 [2021-11-13 18:51:52,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:52,804 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 735 transitions. [2021-11-13 18:51:52,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:51:52,805 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 735 transitions. [2021-11-13 18:51:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-13 18:51:52,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:52,807 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:52,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:53,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:53,033 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash 623227202, now seen corresponding path program 1 times [2021-11-13 18:51:53,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:53,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545606502] [2021-11-13 18:51:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:53,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:53,049 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:53,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017183317] [2021-11-13 18:51:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:53,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:53,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:53,051 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:53,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 18:51:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:53,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:51:53,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:51:53,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:51:53,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:53,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545606502] [2021-11-13 18:51:53,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:53,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017183317] [2021-11-13 18:51:53,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017183317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:51:53,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:51:53,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:51:53,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592409518] [2021-11-13 18:51:53,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:53,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:51:53,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:53,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:51:53,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:51:53,665 INFO L87 Difference]: Start difference. First operand 596 states and 735 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:51:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:53,723 INFO L93 Difference]: Finished difference Result 1143 states and 1433 transitions. [2021-11-13 18:51:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:51:53,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2021-11-13 18:51:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:53,728 INFO L225 Difference]: With dead ends: 1143 [2021-11-13 18:51:53,728 INFO L226 Difference]: Without dead ends: 599 [2021-11-13 18:51:53,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:51:53,730 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 2 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.97ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:53,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 806 Invalid, 21 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 28.97ms Time] [2021-11-13 18:51:53,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-13 18:51:53,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-11-13 18:51:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 578 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 18:51:53,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2021-11-13 18:51:53,758 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 138 [2021-11-13 18:51:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:53,758 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2021-11-13 18:51:53,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:51:53,759 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2021-11-13 18:51:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-13 18:51:53,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:53,761 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:53,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:53,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-13 18:51:53,988 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:53,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:53,989 INFO L85 PathProgramCache]: Analyzing trace with hash -268398914, now seen corresponding path program 1 times [2021-11-13 18:51:53,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:53,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167051989] [2021-11-13 18:51:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:53,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:54,003 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:54,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595082330] [2021-11-13 18:51:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:54,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:54,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:54,005 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:54,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-13 18:51:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:51:54,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:51:54,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 18:51:54,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:51:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 18:51:54,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:54,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167051989] [2021-11-13 18:51:54,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:54,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595082330] [2021-11-13 18:51:54,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595082330] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:51:54,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:51:54,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-13 18:51:54,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790624949] [2021-11-13 18:51:54,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:51:54,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:51:54,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:54,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:51:54,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:51:54,954 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:51:55,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:55,162 INFO L93 Difference]: Finished difference Result 1157 states and 1469 transitions. [2021-11-13 18:51:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:51:55,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 142 [2021-11-13 18:51:55,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:55,168 INFO L225 Difference]: With dead ends: 1157 [2021-11-13 18:51:55,168 INFO L226 Difference]: Without dead ends: 608 [2021-11-13 18:51:55,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:51:55,171 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 17 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.18ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:55,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1318 Invalid, 100 Unknown, 0 Unchecked, 5.18ms Time], IncrementalHoareTripleChecker [25 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 100.83ms Time] [2021-11-13 18:51:55,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-13 18:51:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-11-13 18:51:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2132867132867133) internal successors, (694), 586 states have internal predecessors, (694), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 18:51:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 756 transitions. [2021-11-13 18:51:55,220 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 756 transitions. Word has length 142 [2021-11-13 18:51:55,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:55,221 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 756 transitions. [2021-11-13 18:51:55,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:51:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 756 transitions. [2021-11-13 18:51:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 18:51:55,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:55,224 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:55,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:55,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-13 18:51:55,448 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:55,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:55,449 INFO L85 PathProgramCache]: Analyzing trace with hash -841779454, now seen corresponding path program 2 times [2021-11-13 18:51:55,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:55,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187935258] [2021-11-13 18:51:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:55,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:55,476 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:55,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129297594] [2021-11-13 18:51:55,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:51:55,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:55,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:55,478 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:55,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-13 18:51:55,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:51:55,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:51:55,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 18:51:55,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 84 proven. 25 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 18:51:56,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:51:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-13 18:51:56,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:56,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187935258] [2021-11-13 18:51:56,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:56,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129297594] [2021-11-13 18:51:56,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129297594] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:51:56,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:51:56,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2021-11-13 18:51:56,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942173298] [2021-11-13 18:51:56,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:51:56,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 18:51:56,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:56,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 18:51:56,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:51:56,851 INFO L87 Difference]: Start difference. First operand 608 states and 756 transitions. Second operand has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:51:57,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:57,391 INFO L93 Difference]: Finished difference Result 1214 states and 1566 transitions. [2021-11-13 18:51:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 18:51:57,392 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 150 [2021-11-13 18:51:57,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:57,396 INFO L225 Difference]: With dead ends: 1214 [2021-11-13 18:51:57,396 INFO L226 Difference]: Without dead ends: 614 [2021-11-13 18:51:57,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-11-13 18:51:57,399 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 286 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 278.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.26ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 316.09ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:57,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 1582 Invalid, 268 Unknown, 0 Unchecked, 7.26ms Time], IncrementalHoareTripleChecker [36 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 316.09ms Time] [2021-11-13 18:51:57,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-13 18:51:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 605. [2021-11-13 18:51:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 569 states have (on average 1.2161687170474518) internal successors, (692), 583 states have internal predecessors, (692), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 18:51:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 754 transitions. [2021-11-13 18:51:57,436 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 754 transitions. Word has length 150 [2021-11-13 18:51:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:57,437 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 754 transitions. [2021-11-13 18:51:57,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:51:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 754 transitions. [2021-11-13 18:51:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-13 18:51:57,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:57,440 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:57,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:57,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-13 18:51:57,647 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:57,648 INFO L85 PathProgramCache]: Analyzing trace with hash -191480894, now seen corresponding path program 3 times [2021-11-13 18:51:57,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:57,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829483621] [2021-11-13 18:51:57,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:57,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:51:57,674 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:51:57,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160989586] [2021-11-13 18:51:57,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:51:57,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:51:57,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:51:57,676 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:51:57,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 18:51:57,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 18:51:57,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:51:57,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:51:57,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:51:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-13 18:51:58,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:51:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-13 18:51:59,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:51:59,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829483621] [2021-11-13 18:51:59,628 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:51:59,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160989586] [2021-11-13 18:51:59,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160989586] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:51:59,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:51:59,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-11-13 18:51:59,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162020287] [2021-11-13 18:51:59,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:51:59,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:51:59,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:51:59,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:51:59,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:51:59,633 INFO L87 Difference]: Start difference. First operand 605 states and 754 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:51:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:51:59,731 INFO L93 Difference]: Finished difference Result 605 states and 754 transitions. [2021-11-13 18:51:59,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:51:59,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 162 [2021-11-13 18:51:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:51:59,736 INFO L225 Difference]: With dead ends: 605 [2021-11-13 18:51:59,736 INFO L226 Difference]: Without dead ends: 604 [2021-11-13 18:51:59,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:51:59,740 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 425 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.64ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.22ms IncrementalHoareTripleChecker+Time [2021-11-13 18:51:59,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 598 Invalid, 37 Unknown, 0 Unchecked, 5.64ms Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 57.22ms Time] [2021-11-13 18:51:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-11-13 18:51:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2021-11-13 18:51:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 569 states have (on average 1.2126537785588751) internal successors, (690), 582 states have internal predecessors, (690), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 18:51:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 752 transitions. [2021-11-13 18:51:59,774 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 752 transitions. Word has length 162 [2021-11-13 18:51:59,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:51:59,775 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 752 transitions. [2021-11-13 18:51:59,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:51:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 752 transitions. [2021-11-13 18:51:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-11-13 18:51:59,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:51:59,783 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:51:59,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:51:59,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-13 18:51:59,988 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:51:59,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:51:59,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1864666512, now seen corresponding path program 1 times [2021-11-13 18:51:59,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:51:59,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139776211] [2021-11-13 18:51:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:51:59,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:00,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:52:00,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041672713] [2021-11-13 18:52:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:00,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:00,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:52:00,023 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:52:00,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-13 18:52:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:00,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:52:00,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-13 18:52:01,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-13 18:52:02,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:02,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139776211] [2021-11-13 18:52:02,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:52:02,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041672713] [2021-11-13 18:52:02,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041672713] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:52:02,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:52:02,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-13 18:52:02,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780502546] [2021-11-13 18:52:02,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:52:02,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:52:02,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:02,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:52:02,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:52:02,137 INFO L87 Difference]: Start difference. First operand 604 states and 752 transitions. Second operand has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:52:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:02,392 INFO L93 Difference]: Finished difference Result 816 states and 1027 transitions. [2021-11-13 18:52:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:52:02,394 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 361 [2021-11-13 18:52:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:02,402 INFO L225 Difference]: With dead ends: 816 [2021-11-13 18:52:02,402 INFO L226 Difference]: Without dead ends: 815 [2021-11-13 18:52:02,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:52:02,406 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 887 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.23ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.06ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:02,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 2056 Invalid, 219 Unknown, 0 Unchecked, 7.23ms Time], IncrementalHoareTripleChecker [62 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 172.06ms Time] [2021-11-13 18:52:02,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-11-13 18:52:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 603. [2021-11-13 18:52:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 569 states have (on average 1.210896309314587) internal successors, (689), 581 states have internal predecessors, (689), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-13 18:52:02,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 751 transitions. [2021-11-13 18:52:02,449 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 751 transitions. Word has length 361 [2021-11-13 18:52:02,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:02,450 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 751 transitions. [2021-11-13 18:52:02,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:52:02,450 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 751 transitions. [2021-11-13 18:52:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-13 18:52:02,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:02,458 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:02,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:02,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:02,679 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:52:02,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:02,679 INFO L85 PathProgramCache]: Analyzing trace with hash 581056994, now seen corresponding path program 1 times [2021-11-13 18:52:02,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:52:02,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583852614] [2021-11-13 18:52:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:02,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:02,700 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:52:02,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104949435] [2021-11-13 18:52:02,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:02,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:02,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:52:02,702 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:52:02,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-13 18:52:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:03,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:52:03,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:03,822 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-13 18:52:03,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-13 18:52:04,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:04,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583852614] [2021-11-13 18:52:04,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:52:04,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104949435] [2021-11-13 18:52:04,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104949435] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:52:04,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:52:04,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-13 18:52:04,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376433992] [2021-11-13 18:52:04,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:52:04,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:52:04,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:04,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:52:04,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:52:04,649 INFO L87 Difference]: Start difference. First operand 603 states and 751 transitions. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:52:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:04,964 INFO L93 Difference]: Finished difference Result 1368 states and 1703 transitions. [2021-11-13 18:52:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:52:04,965 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 366 [2021-11-13 18:52:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:04,976 INFO L225 Difference]: With dead ends: 1368 [2021-11-13 18:52:04,976 INFO L226 Difference]: Without dead ends: 1335 [2021-11-13 18:52:04,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:52:04,978 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1677 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 123.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.49ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.72ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:04,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1715 Valid, 2803 Invalid, 176 Unknown, 0 Unchecked, 16.49ms Time], IncrementalHoareTripleChecker [27 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 146.72ms Time] [2021-11-13 18:52:04,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-11-13 18:52:05,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1335. [2021-11-13 18:52:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1277 states have (on average 1.197337509788567) internal successors, (1529), 1289 states have internal predecessors, (1529), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-11-13 18:52:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1647 transitions. [2021-11-13 18:52:05,052 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1647 transitions. Word has length 366 [2021-11-13 18:52:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:05,053 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 1647 transitions. [2021-11-13 18:52:05,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:52:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1647 transitions. [2021-11-13 18:52:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2021-11-13 18:52:05,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:05,084 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:05,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:05,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:05,300 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:52:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:05,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1232682362, now seen corresponding path program 2 times [2021-11-13 18:52:05,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:52:05,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285671182] [2021-11-13 18:52:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:05,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:05,351 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:52:05,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484245545] [2021-11-13 18:52:05,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:52:05,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:05,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:52:05,376 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:52:05,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-13 18:52:05,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:52:05,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:52:05,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:52:05,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2021-11-13 18:52:07,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:52:07,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:07,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285671182] [2021-11-13 18:52:07,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:52:07,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484245545] [2021-11-13 18:52:07,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484245545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:07,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:07,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:52:07,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413799875] [2021-11-13 18:52:07,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:07,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:52:07,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:52:07,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:52:07,302 INFO L87 Difference]: Start difference. First operand 1335 states and 1647 transitions. Second operand has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:52:07,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:07,375 INFO L93 Difference]: Finished difference Result 1361 states and 1693 transitions. [2021-11-13 18:52:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:52:07,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 774 [2021-11-13 18:52:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:07,385 INFO L225 Difference]: With dead ends: 1361 [2021-11-13 18:52:07,385 INFO L226 Difference]: Without dead ends: 1360 [2021-11-13 18:52:07,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:52:07,387 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 109 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:07,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 570 Invalid, 40 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 27.50ms Time] [2021-11-13 18:52:07,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2021-11-13 18:52:07,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1337. [2021-11-13 18:52:07,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1279 states have (on average 1.1970289288506646) internal successors, (1531), 1291 states have internal predecessors, (1531), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-11-13 18:52:07,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1649 transitions. [2021-11-13 18:52:07,474 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1649 transitions. Word has length 774 [2021-11-13 18:52:07,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:07,476 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 1649 transitions. [2021-11-13 18:52:07,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:52:07,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1649 transitions. [2021-11-13 18:52:07,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2021-11-13 18:52:07,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:07,487 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:07,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:07,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-13 18:52:07,700 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:52:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:07,701 INFO L85 PathProgramCache]: Analyzing trace with hash 441553223, now seen corresponding path program 1 times [2021-11-13 18:52:07,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:52:07,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713873866] [2021-11-13 18:52:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:07,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:07,729 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:52:07,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964268112] [2021-11-13 18:52:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:07,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:07,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:52:07,731 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:52:07,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-13 18:52:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:08,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2163 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 18:52:08,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-13 18:52:09,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-13 18:52:11,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:11,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713873866] [2021-11-13 18:52:11,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:52:11,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964268112] [2021-11-13 18:52:11,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964268112] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:52:11,567 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:52:11,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-11-13 18:52:11,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425849277] [2021-11-13 18:52:11,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:52:11,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-13 18:52:11,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:11,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-13 18:52:11,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-13 18:52:11,572 INFO L87 Difference]: Start difference. First operand 1337 states and 1649 transitions. Second operand has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:52:12,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:12,033 INFO L93 Difference]: Finished difference Result 1921 states and 2378 transitions. [2021-11-13 18:52:12,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-13 18:52:12,034 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 775 [2021-11-13 18:52:12,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:12,047 INFO L225 Difference]: With dead ends: 1921 [2021-11-13 18:52:12,047 INFO L226 Difference]: Without dead ends: 1886 [2021-11-13 18:52:12,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1528 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-11-13 18:52:12,051 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 2436 mSDsluCounter, 2993 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.39ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 206.65ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:12,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 3367 Invalid, 268 Unknown, 0 Unchecked, 13.39ms Time], IncrementalHoareTripleChecker [69 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 206.65ms Time] [2021-11-13 18:52:12,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-11-13 18:52:12,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1886. [2021-11-13 18:52:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1810 states have (on average 1.1939226519337016) internal successors, (2161), 1822 states have internal predecessors, (2161), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-11-13 18:52:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2321 transitions. [2021-11-13 18:52:12,149 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2321 transitions. Word has length 775 [2021-11-13 18:52:12,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:12,151 INFO L470 AbstractCegarLoop]: Abstraction has 1886 states and 2321 transitions. [2021-11-13 18:52:12,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 18:52:12,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2321 transitions. [2021-11-13 18:52:12,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2021-11-13 18:52:12,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:12,168 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:12,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:12,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-13 18:52:12,392 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:52:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:12,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1963705612, now seen corresponding path program 2 times [2021-11-13 18:52:12,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:52:12,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856427612] [2021-11-13 18:52:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:12,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:12,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:52:12,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268520277] [2021-11-13 18:52:12,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:52:12,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:12,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:52:12,447 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:52:12,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-13 18:52:12,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:52:12,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:52:12,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:52:12,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-13 18:52:15,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:52:15,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:15,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856427612] [2021-11-13 18:52:15,076 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:52:15,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268520277] [2021-11-13 18:52:15,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268520277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:15,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:15,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:52:15,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040422192] [2021-11-13 18:52:15,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:15,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:52:15,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:15,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:52:15,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:52:15,079 INFO L87 Difference]: Start difference. First operand 1886 states and 2321 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:52:15,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:15,170 INFO L93 Difference]: Finished difference Result 1886 states and 2321 transitions. [2021-11-13 18:52:15,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:52:15,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1081 [2021-11-13 18:52:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:15,183 INFO L225 Difference]: With dead ends: 1886 [2021-11-13 18:52:15,184 INFO L226 Difference]: Without dead ends: 1885 [2021-11-13 18:52:15,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:52:15,185 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.65ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:15,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 478 Invalid, 46 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 37.65ms Time] [2021-11-13 18:52:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2021-11-13 18:52:15,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1885. [2021-11-13 18:52:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1810 states have (on average 1.1933701657458564) internal successors, (2160), 1821 states have internal predecessors, (2160), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-11-13 18:52:15,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2320 transitions. [2021-11-13 18:52:15,311 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2320 transitions. Word has length 1081 [2021-11-13 18:52:15,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:15,313 INFO L470 AbstractCegarLoop]: Abstraction has 1885 states and 2320 transitions. [2021-11-13 18:52:15,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-13 18:52:15,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2320 transitions. [2021-11-13 18:52:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2021-11-13 18:52:15,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:15,331 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:15,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:15,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:15,553 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:52:15,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:15,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1708047769, now seen corresponding path program 1 times [2021-11-13 18:52:15,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:52:15,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507997588] [2021-11-13 18:52:15,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:15,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:15,606 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:52:15,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444401119] [2021-11-13 18:52:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:15,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:15,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:52:15,608 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:52:15,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-13 18:52:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:16,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:52:16,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-13 18:52:18,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-13 18:52:20,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:20,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507997588] [2021-11-13 18:52:20,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:52:20,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444401119] [2021-11-13 18:52:20,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444401119] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:52:20,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:52:20,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-11-13 18:52:20,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329346049] [2021-11-13 18:52:20,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:52:20,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:52:20,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:20,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:52:20,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:52:20,879 INFO L87 Difference]: Start difference. First operand 1885 states and 2320 transitions. Second operand has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-13 18:52:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:21,262 INFO L93 Difference]: Finished difference Result 1977 states and 2471 transitions. [2021-11-13 18:52:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:52:21,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1092 [2021-11-13 18:52:21,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:21,277 INFO L225 Difference]: With dead ends: 1977 [2021-11-13 18:52:21,277 INFO L226 Difference]: Without dead ends: 1976 [2021-11-13 18:52:21,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2189 GetRequests, 2174 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:52:21,280 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 692 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.17ms SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 259.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:21,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 856 Invalid, 371 Unknown, 0 Unchecked, 5.17ms Time], IncrementalHoareTripleChecker [141 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 259.74ms Time] [2021-11-13 18:52:21,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-11-13 18:52:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1975. [2021-11-13 18:52:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1867 states have (on average 1.203535083020889) internal successors, (2247), 1908 states have internal predecessors, (2247), 100 states have call successors, (100), 6 states have call predecessors, (100), 7 states have return successors, (120), 64 states have call predecessors, (120), 100 states have call successors, (120) [2021-11-13 18:52:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2467 transitions. [2021-11-13 18:52:21,373 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2467 transitions. Word has length 1092 [2021-11-13 18:52:21,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:21,375 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 2467 transitions. [2021-11-13 18:52:21,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-13 18:52:21,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2467 transitions. [2021-11-13 18:52:21,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2021-11-13 18:52:21,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:21,395 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:21,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:21,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:21,609 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:52:21,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:21,609 INFO L85 PathProgramCache]: Analyzing trace with hash -412829695, now seen corresponding path program 2 times [2021-11-13 18:52:21,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:52:21,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733477538] [2021-11-13 18:52:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:21,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:21,659 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:52:21,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866341748] [2021-11-13 18:52:21,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:52:21,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:21,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:52:21,661 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:52:21,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-13 18:52:22,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:52:22,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:52:22,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:52:22,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-13 18:52:24,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4984 trivial. 0 not checked. [2021-11-13 18:52:27,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:27,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733477538] [2021-11-13 18:52:27,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:52:27,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866341748] [2021-11-13 18:52:27,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866341748] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:52:27,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:52:27,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-11-13 18:52:27,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353460261] [2021-11-13 18:52:27,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:52:27,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 18:52:27,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 18:52:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:52:27,027 INFO L87 Difference]: Start difference. First operand 1975 states and 2467 transitions. Second operand has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-13 18:52:28,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:28,093 INFO L93 Difference]: Finished difference Result 2157 states and 2768 transitions. [2021-11-13 18:52:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-13 18:52:28,094 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 1128 [2021-11-13 18:52:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:28,109 INFO L225 Difference]: With dead ends: 2157 [2021-11-13 18:52:28,109 INFO L226 Difference]: Without dead ends: 2156 [2021-11-13 18:52:28,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2273 GetRequests, 2234 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 18:52:28,112 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1413 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 580.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.26ms SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 753.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:28,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 1046 Invalid, 1266 Unknown, 0 Unchecked, 9.26ms Time], IncrementalHoareTripleChecker [472 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 753.59ms Time] [2021-11-13 18:52:28,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-11-13 18:52:28,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2155. [2021-11-13 18:52:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1981 states have (on average 1.2221100454316003) internal successors, (2421), 2082 states have internal predecessors, (2421), 160 states have call successors, (160), 12 states have call predecessors, (160), 13 states have return successors, (180), 70 states have call predecessors, (180), 160 states have call successors, (180) [2021-11-13 18:52:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2761 transitions. [2021-11-13 18:52:28,253 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2761 transitions. Word has length 1128 [2021-11-13 18:52:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:28,255 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2761 transitions. [2021-11-13 18:52:28,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-13 18:52:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2761 transitions. [2021-11-13 18:52:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2021-11-13 18:52:28,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:28,274 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:28,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:28,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-13 18:52:28,500 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:52:28,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:28,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1412788433, now seen corresponding path program 3 times [2021-11-13 18:52:28,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:52:28,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205601434] [2021-11-13 18:52:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:28,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:28,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:52:28,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960212273] [2021-11-13 18:52:28,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:52:28,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:28,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:52:28,541 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:52:28,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-13 18:52:28,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 18:52:28,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:52:28,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:52:28,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5520 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2021-11-13 18:52:30,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:52:30,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:30,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205601434] [2021-11-13 18:52:30,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:52:30,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960212273] [2021-11-13 18:52:30,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960212273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:52:30,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:52:30,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:52:30,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811212701] [2021-11-13 18:52:30,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:52:30,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:52:30,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:30,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:52:30,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:52:30,515 INFO L87 Difference]: Start difference. First operand 2155 states and 2761 transitions. Second operand has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:52:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:30,767 INFO L93 Difference]: Finished difference Result 2472 states and 3248 transitions. [2021-11-13 18:52:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:52:30,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1200 [2021-11-13 18:52:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:30,786 INFO L225 Difference]: With dead ends: 2472 [2021-11-13 18:52:30,786 INFO L226 Difference]: Without dead ends: 2471 [2021-11-13 18:52:30,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:52:30,790 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 249 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.01ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.24ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:30,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 563 Invalid, 128 Unknown, 0 Unchecked, 2.01ms Time], IncrementalHoareTripleChecker [49 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 97.24ms Time] [2021-11-13 18:52:30,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-11-13 18:52:30,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2398. [2021-11-13 18:52:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2152 states have (on average 1.246282527881041) internal successors, (2682), 2307 states have internal predecessors, (2682), 223 states have call successors, (223), 21 states have call predecessors, (223), 22 states have return successors, (243), 79 states have call predecessors, (243), 223 states have call successors, (243) [2021-11-13 18:52:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3148 transitions. [2021-11-13 18:52:30,962 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3148 transitions. Word has length 1200 [2021-11-13 18:52:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:30,964 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 3148 transitions. [2021-11-13 18:52:30,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:52:30,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3148 transitions. [2021-11-13 18:52:30,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2021-11-13 18:52:30,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:30,994 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:31,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:31,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:31,213 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:52:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:31,214 INFO L85 PathProgramCache]: Analyzing trace with hash -54767608, now seen corresponding path program 1 times [2021-11-13 18:52:31,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:52:31,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305269305] [2021-11-13 18:52:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:31,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:31,267 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:52:31,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787413923] [2021-11-13 18:52:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:31,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:31,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:52:31,269 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:52:31,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-13 18:52:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:52:32,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 3274 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 18:52:32,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-13 18:52:34,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 5140 trivial. 0 not checked. [2021-11-13 18:52:37,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:37,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305269305] [2021-11-13 18:52:37,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:52:37,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787413923] [2021-11-13 18:52:37,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787413923] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:52:37,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:52:37,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-11-13 18:52:37,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802267238] [2021-11-13 18:52:37,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:52:37,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-13 18:52:37,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:37,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-13 18:52:37,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-13 18:52:37,354 INFO L87 Difference]: Start difference. First operand 2398 states and 3148 transitions. Second operand has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-11-13 18:52:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:40,320 INFO L93 Difference]: Finished difference Result 3115 states and 4316 transitions. [2021-11-13 18:52:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-13 18:52:40,322 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 1201 [2021-11-13 18:52:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:40,343 INFO L225 Difference]: With dead ends: 3115 [2021-11-13 18:52:40,343 INFO L226 Difference]: Without dead ends: 3114 [2021-11-13 18:52:40,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2443 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-11-13 18:52:40,348 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 3100 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 1521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1454.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3110 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 3755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.27ms SdHoareTripleChecker+Time, 1521 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1828.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:40,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3110 Valid, 1604 Invalid, 3755 Unknown, 0 Unchecked, 16.27ms Time], IncrementalHoareTripleChecker [1521 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 1828.93ms Time] [2021-11-13 18:52:40,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-11-13 18:52:40,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 3094. [2021-11-13 18:52:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 2608 states have (on average 1.2952453987730062) internal successors, (3378), 2967 states have internal predecessors, (3378), 439 states have call successors, (439), 45 states have call predecessors, (439), 46 states have return successors, (459), 103 states have call predecessors, (459), 439 states have call successors, (459) [2021-11-13 18:52:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 4276 transitions. [2021-11-13 18:52:40,552 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 4276 transitions. Word has length 1201 [2021-11-13 18:52:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:40,554 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 4276 transitions. [2021-11-13 18:52:40,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-11-13 18:52:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 4276 transitions. [2021-11-13 18:52:40,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2021-11-13 18:52:40,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:40,580 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:40,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:40,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-13 18:52:40,781 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:52:40,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:40,781 INFO L85 PathProgramCache]: Analyzing trace with hash 432013928, now seen corresponding path program 2 times [2021-11-13 18:52:40,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:52:40,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776926338] [2021-11-13 18:52:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:40,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:40,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:52:40,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382093355] [2021-11-13 18:52:40,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:52:40,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:40,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:52:40,820 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:52:40,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-13 18:52:41,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:52:41,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:52:41,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 3706 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-13 18:52:41,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:52:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-13 18:52:45,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:52:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 5884 trivial. 0 not checked. [2021-11-13 18:52:49,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:52:49,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776926338] [2021-11-13 18:52:49,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:52:49,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382093355] [2021-11-13 18:52:49,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382093355] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:52:49,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:52:49,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2021-11-13 18:52:49,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534342721] [2021-11-13 18:52:49,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:52:49,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-13 18:52:49,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:52:49,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-13 18:52:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-13 18:52:49,552 INFO L87 Difference]: Start difference. First operand 3094 states and 4276 transitions. Second operand has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-11-13 18:52:59,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:52:59,011 INFO L93 Difference]: Finished difference Result 4507 states and 6584 transitions. [2021-11-13 18:52:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-11-13 18:52:59,012 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) Word has length 1345 [2021-11-13 18:52:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:52:59,047 INFO L225 Difference]: With dead ends: 4507 [2021-11-13 18:52:59,048 INFO L226 Difference]: Without dead ends: 4506 [2021-11-13 18:52:59,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2779 GetRequests, 2596 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-11-13 18:52:59,062 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 8090 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 5454 mSolverCounterSat, 4158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3773.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8100 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 9612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.97ms SdHoareTripleChecker+Time, 4158 IncrementalHoareTripleChecker+Valid, 5454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4580.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:52:59,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8100 Valid, 2753 Invalid, 9612 Unknown, 0 Unchecked, 47.97ms Time], IncrementalHoareTripleChecker [4158 Valid, 5454 Invalid, 0 Unknown, 0 Unchecked, 4580.38ms Time] [2021-11-13 18:52:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-11-13 18:52:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4486. [2021-11-13 18:52:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 3520 states have (on average 1.3551136363636365) internal successors, (4770), 4287 states have internal predecessors, (4770), 871 states have call successors, (871), 93 states have call predecessors, (871), 94 states have return successors, (891), 151 states have call predecessors, (891), 871 states have call successors, (891) [2021-11-13 18:52:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 6532 transitions. [2021-11-13 18:52:59,388 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 6532 transitions. Word has length 1345 [2021-11-13 18:52:59,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:52:59,390 INFO L470 AbstractCegarLoop]: Abstraction has 4486 states and 6532 transitions. [2021-11-13 18:52:59,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-11-13 18:52:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 6532 transitions. [2021-11-13 18:52:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1634 [2021-11-13 18:52:59,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:52:59,430 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:52:59,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-13 18:52:59,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:59,650 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:52:59,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:52:59,650 INFO L85 PathProgramCache]: Analyzing trace with hash -85776600, now seen corresponding path program 3 times [2021-11-13 18:52:59,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:52:59,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744464052] [2021-11-13 18:52:59,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:52:59,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:52:59,693 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:52:59,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326742724] [2021-11-13 18:52:59,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:52:59,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:52:59,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:52:59,697 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:52:59,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-13 18:53:00,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 18:53:00,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:53:00,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:53:00,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:53:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 17427 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 16975 trivial. 0 not checked. [2021-11-13 18:53:02,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:53:02,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:53:02,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744464052] [2021-11-13 18:53:02,278 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:53:02,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326742724] [2021-11-13 18:53:02,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326742724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:53:02,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:53:02,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:53:02,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992736869] [2021-11-13 18:53:02,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:53:02,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:53:02,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:53:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:53:02,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:53:02,282 INFO L87 Difference]: Start difference. First operand 4486 states and 6532 transitions. Second operand has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:53:02,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:53:02,942 INFO L93 Difference]: Finished difference Result 7361 states and 11018 transitions. [2021-11-13 18:53:02,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:53:02,943 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1633 [2021-11-13 18:53:02,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:53:02,998 INFO L225 Difference]: With dead ends: 7361 [2021-11-13 18:53:02,998 INFO L226 Difference]: Without dead ends: 7360 [2021-11-13 18:53:03,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1632 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:53:03,004 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 282 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.70ms SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 169.79ms IncrementalHoareTripleChecker+Time [2021-11-13 18:53:03,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 716 Invalid, 231 Unknown, 0 Unchecked, 2.70ms Time], IncrementalHoareTripleChecker [78 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 169.79ms Time] [2021-11-13 18:53:03,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2021-11-13 18:53:03,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 6897. [2021-11-13 18:53:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6897 states, 5227 states have (on average 1.411325808303042) internal successors, (7377), 6519 states have internal predecessors, (7377), 1486 states have call successors, (1486), 182 states have call predecessors, (1486), 183 states have return successors, (1506), 240 states have call predecessors, (1506), 1486 states have call successors, (1506) [2021-11-13 18:53:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6897 states to 6897 states and 10369 transitions. [2021-11-13 18:53:03,593 INFO L78 Accepts]: Start accepts. Automaton has 6897 states and 10369 transitions. Word has length 1633 [2021-11-13 18:53:03,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:53:03,598 INFO L470 AbstractCegarLoop]: Abstraction has 6897 states and 10369 transitions. [2021-11-13 18:53:03,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-13 18:53:03,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6897 states and 10369 transitions. [2021-11-13 18:53:03,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2021-11-13 18:53:03,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:53:03,648 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:53:03,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-13 18:53:03,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:53:03,876 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:53:03,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:53:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1486421430, now seen corresponding path program 1 times [2021-11-13 18:53:03,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:53:03,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000597196] [2021-11-13 18:53:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:53:03,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:53:03,923 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:53:03,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126398104] [2021-11-13 18:53:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:53:03,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:53:03,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:53:03,930 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:53:03,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-13 18:53:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:53:04,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 4574 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-13 18:53:04,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:53:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-13 18:53:10,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:53:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 9100 trivial. 0 not checked. [2021-11-13 18:53:20,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:53:20,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000597196] [2021-11-13 18:53:20,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:53:20,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126398104] [2021-11-13 18:53:20,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126398104] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:53:20,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:53:20,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2021-11-13 18:53:20,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638964076] [2021-11-13 18:53:20,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:53:20,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-13 18:53:20,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:53:20,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-13 18:53:20,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-11-13 18:53:20,257 INFO L87 Difference]: Start difference. First operand 6897 states and 10369 transitions. Second operand has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-11-13 18:54:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:54:00,081 INFO L93 Difference]: Finished difference Result 12329 states and 19133 transitions. [2021-11-13 18:54:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-11-13 18:54:00,082 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) Word has length 1635 [2021-11-13 18:54:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:54:00,137 INFO L225 Difference]: With dead ends: 12329 [2021-11-13 18:54:00,138 INFO L226 Difference]: Without dead ends: 12328 [2021-11-13 18:54:00,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3455 GetRequests, 3080 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-11-13 18:54:00,161 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 19797 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 11192 mSolverCounterSat, 11128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8010.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19807 SdHoareTripleChecker+Valid, 3664 SdHoareTripleChecker+Invalid, 22320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 115.42ms SdHoareTripleChecker+Time, 11128 IncrementalHoareTripleChecker+Valid, 11192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9884.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:54:00,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19807 Valid, 3664 Invalid, 22320 Unknown, 0 Unchecked, 115.42ms Time], IncrementalHoareTripleChecker [11128 Valid, 11192 Invalid, 0 Unknown, 0 Unchecked, 9884.35ms Time] [2021-11-13 18:54:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2021-11-13 18:54:01,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 12273. [2021-11-13 18:54:01,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12273 states, 8875 states have (on average 1.4585915492957746) internal successors, (12945), 11559 states have internal predecessors, (12945), 3022 states have call successors, (3022), 374 states have call predecessors, (3022), 375 states have return successors, (3042), 432 states have call predecessors, (3042), 3022 states have call successors, (3042) [2021-11-13 18:54:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12273 states to 12273 states and 19009 transitions. [2021-11-13 18:54:01,232 INFO L78 Accepts]: Start accepts. Automaton has 12273 states and 19009 transitions. Word has length 1635 [2021-11-13 18:54:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:54:01,234 INFO L470 AbstractCegarLoop]: Abstraction has 12273 states and 19009 transitions. [2021-11-13 18:54:01,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-11-13 18:54:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 12273 states and 19009 transitions. [2021-11-13 18:54:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2212 [2021-11-13 18:54:01,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:54:01,316 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:54:01,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-13 18:54:01,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-13 18:54:01,538 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:54:01,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:54:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash -920525002, now seen corresponding path program 2 times [2021-11-13 18:54:01,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:54:01,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171226122] [2021-11-13 18:54:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:54:01,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:54:01,619 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:54:01,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320218325] [2021-11-13 18:54:01,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:54:01,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:54:01,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:54:01,621 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:54:01,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-13 18:54:02,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:54:02,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:54:02,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 6302 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-13 18:54:02,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:54:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-13 18:54:16,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:54:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 22444 trivial. 0 not checked. [2021-11-13 18:54:44,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:54:44,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171226122] [2021-11-13 18:54:44,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:54:44,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320218325] [2021-11-13 18:54:44,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320218325] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:54:44,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:54:44,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2021-11-13 18:54:44,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287671597] [2021-11-13 18:54:44,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:54:44,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-13 18:54:44,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:54:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-13 18:54:44,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-11-13 18:54:44,836 INFO L87 Difference]: Start difference. First operand 12273 states and 19009 transitions. Second operand has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-11-13 18:59:36,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:59:36,400 INFO L93 Difference]: Finished difference Result 23081 states and 36461 transitions. [2021-11-13 18:59:36,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-11-13 18:59:36,401 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) Word has length 2211 [2021-11-13 18:59:36,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:59:36,516 INFO L225 Difference]: With dead ends: 23081 [2021-11-13 18:59:36,516 INFO L226 Difference]: Without dead ends: 23080 [2021-11-13 18:59:36,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4799 GetRequests, 4040 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 80.3s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-11-13 18:59:36,578 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 43347 mSDsluCounter, 8393 mSDsCounter, 0 mSdLazyCounter, 29736 mSolverCounterSat, 26851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19625.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43357 SdHoareTripleChecker+Valid, 8649 SdHoareTripleChecker+Invalid, 56587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 363.93ms SdHoareTripleChecker+Time, 26851 IncrementalHoareTripleChecker+Valid, 29736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24226.15ms IncrementalHoareTripleChecker+Time [2021-11-13 18:59:36,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43357 Valid, 8649 Invalid, 56587 Unknown, 0 Unchecked, 363.93ms Time], IncrementalHoareTripleChecker [26851 Valid, 29736 Invalid, 0 Unknown, 0 Unchecked, 24226.15ms Time] [2021-11-13 18:59:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23080 states. [2021-11-13 18:59:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23080 to 23025. [2021-11-13 18:59:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23025 states, 16171 states have (on average 1.4891472388844227) internal successors, (24081), 21639 states have internal predecessors, (24081), 6094 states have call successors, (6094), 758 states have call predecessors, (6094), 759 states have return successors, (6114), 816 states have call predecessors, (6114), 6094 states have call successors, (6114) [2021-11-13 18:59:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23025 states to 23025 states and 36289 transitions. [2021-11-13 18:59:38,205 INFO L78 Accepts]: Start accepts. Automaton has 23025 states and 36289 transitions. Word has length 2211 [2021-11-13 18:59:38,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:59:38,208 INFO L470 AbstractCegarLoop]: Abstraction has 23025 states and 36289 transitions. [2021-11-13 18:59:38,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-11-13 18:59:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 23025 states and 36289 transitions. [2021-11-13 18:59:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3364 [2021-11-13 18:59:38,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:59:38,698 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:59:38,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-13 18:59:38,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-13 18:59:38,899 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:59:38,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:59:38,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1796228554, now seen corresponding path program 3 times [2021-11-13 18:59:38,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:59:38,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807519426] [2021-11-13 18:59:38,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:59:38,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:59:38,980 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:59:38,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678788201] [2021-11-13 18:59:38,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:59:38,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:59:38,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:59:38,984 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:59:39,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-13 18:59:39,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 18:59:39,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:59:39,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:59:39,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:59:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 220424 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 218531 trivial. 0 not checked. [2021-11-13 18:59:44,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:59:44,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:59:44,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807519426] [2021-11-13 18:59:44,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:59:44,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678788201] [2021-11-13 18:59:44,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678788201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:59:44,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:59:44,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:59:44,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903175261] [2021-11-13 18:59:44,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:59:44,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:59:44,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:59:44,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:59:44,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:59:44,153 INFO L87 Difference]: Start difference. First operand 23025 states and 36289 transitions. Second operand has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:59:46,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:59:46,848 INFO L93 Difference]: Finished difference Result 45979 states and 72022 transitions. [2021-11-13 18:59:46,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:59:46,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 3363 [2021-11-13 18:59:46,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:59:47,045 INFO L225 Difference]: With dead ends: 45979 [2021-11-13 18:59:47,045 INFO L226 Difference]: Without dead ends: 45978 [2021-11-13 18:59:47,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3371 GetRequests, 3362 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:59:47,070 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 499 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.16ms IncrementalHoareTripleChecker+Time [2021-11-13 18:59:47,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 699 Invalid, 244 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [114 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 139.16ms Time] [2021-11-13 18:59:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45978 states. [2021-11-13 18:59:50,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45978 to 37513. [2021-11-13 18:59:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37513 states, 26909 states have (on average 1.5039206213534506) internal successors, (40469), 34996 states have internal predecessors, (40469), 9278 states have call successors, (9278), 1324 states have call predecessors, (9278), 1325 states have return successors, (9298), 1381 states have call predecessors, (9298), 9278 states have call successors, (9298) [2021-11-13 18:59:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37513 states to 37513 states and 59045 transitions. [2021-11-13 18:59:50,367 INFO L78 Accepts]: Start accepts. Automaton has 37513 states and 59045 transitions. Word has length 3363 [2021-11-13 18:59:50,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:59:50,371 INFO L470 AbstractCegarLoop]: Abstraction has 37513 states and 59045 transitions. [2021-11-13 18:59:50,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 18:59:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand 37513 states and 59045 transitions. [2021-11-13 18:59:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3365 [2021-11-13 18:59:50,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:59:50,641 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:59:50,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-13 18:59:50,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-13 18:59:50,855 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:59:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:59:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash -626412579, now seen corresponding path program 1 times [2021-11-13 18:59:50,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:59:50,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010344554] [2021-11-13 18:59:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:59:50,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:59:50,935 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:59:50,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777028860] [2021-11-13 18:59:50,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:59:50,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:59:50,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:59:50,941 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:59:50,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82dfa042-6005-49de-af93-48c8c642d051/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-13 18:59:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:59:52,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 9761 conjuncts, 383 conjunts are in the unsatisfiable core [2021-11-13 18:59:52,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 19:00:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 219855 backedges. 0 proven. 214895 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-13 19:00:37,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 19:02:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 219855 backedges. 0 proven. 143831 refuted. 0 times theorem prover too weak. 76024 trivial. 0 not checked. [2021-11-13 19:02:19,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 19:02:19,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010344554] [2021-11-13 19:02:19,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 19:02:19,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777028860] [2021-11-13 19:02:19,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777028860] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 19:02:19,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 19:02:19,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [382, 383] total 765 [2021-11-13 19:02:19,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854128899] [2021-11-13 19:02:19,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 19:02:19,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-11-13 19:02:19,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 19:02:19,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-11-13 19:02:19,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2021-11-13 19:02:19,884 INFO L87 Difference]: Start difference. First operand 37513 states and 59045 transitions. Second operand has 766 states, 765 states have (on average 4.580392156862745) internal successors, (3504), 766 states have internal predecessors, (3504), 380 states have call successors, (386), 191 states have call predecessors, (386), 191 states have return successors, (386), 380 states have call predecessors, (386), 380 states have call successors, (386)