./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY --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 85fe539c4a9811cd5d49f239f4680cc0b3752a2958e9f287c34e302b923af4f9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:03:40,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:03:40,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:03:40,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:03:40,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:03:40,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:03:40,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:03:40,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:03:40,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:03:40,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:03:40,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:03:40,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:03:40,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:03:40,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:03:40,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:03:40,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:03:40,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:03:40,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:03:40,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:03:40,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:03:40,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:03:40,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:03:40,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:03:40,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:03:40,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:03:40,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:03:40,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:03:40,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:03:40,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:03:40,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:03:40,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:03:40,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:03:40,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:03:40,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:03:40,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:03:40,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:03:40,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:03:40,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:03:40,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:03:40,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:03:40,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:03:40,649 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-07 08:03:40,697 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:03:40,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:03:40,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:03:40,698 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:03:40,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:03:40,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:03:40,700 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:03:40,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:03:40,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:03:40,701 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:03:40,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:03:40,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:03:40,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:03:40,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:03:40,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:03:40,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:03:40,704 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 08:03:40,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:03:40,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:03:40,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:03:40,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:03:40,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:03:40,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:03:40,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:03:40,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:03:40,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:03:40,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:03:40,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:03:40,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:03:40,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:03:40,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:03:40,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:03:40,709 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_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85fe539c4a9811cd5d49f239f4680cc0b3752a2958e9f287c34e302b923af4f9 [2021-11-07 08:03:41,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:03:41,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:03:41,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:03:41,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:03:41,059 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:03:41,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i [2021-11-07 08:03:41,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/data/7684b9f3f/06774cd70ea244adaea1909e9277e575/FLAG1f166aca4 [2021-11-07 08:03:41,893 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:03:41,893 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i [2021-11-07 08:03:41,923 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/data/7684b9f3f/06774cd70ea244adaea1909e9277e575/FLAG1f166aca4 [2021-11-07 08:03:42,050 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/data/7684b9f3f/06774cd70ea244adaea1909e9277e575 [2021-11-07 08:03:42,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:03:42,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:03:42,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:03:42,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:03:42,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:03:42,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:03:42" (1/1) ... [2021-11-07 08:03:42,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd742e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:42, skipping insertion in model container [2021-11-07 08:03:42,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:03:42" (1/1) ... [2021-11-07 08:03:42,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:03:42,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:03:42,664 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_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i[33022,33035] [2021-11-07 08:03:42,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:03:42,887 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:03:42,934 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_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-1.i[33022,33035] [2021-11-07 08:03:43,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:03:43,172 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:03:43,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43 WrapperNode [2021-11-07 08:03:43,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:03:43,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:03:43,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:03:43,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:03:43,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43" (1/1) ... [2021-11-07 08:03:43,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43" (1/1) ... [2021-11-07 08:03:43,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:03:43,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:03:43,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:03:43,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:03:43,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43" (1/1) ... [2021-11-07 08:03:43,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43" (1/1) ... [2021-11-07 08:03:43,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43" (1/1) ... [2021-11-07 08:03:43,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43" (1/1) ... [2021-11-07 08:03:43,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43" (1/1) ... [2021-11-07 08:03:43,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43" (1/1) ... [2021-11-07 08:03:43,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43" (1/1) ... [2021-11-07 08:03:43,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:03:43,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:03:43,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:03:43,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:03:43,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43" (1/1) ... [2021-11-07 08:03:43,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:03:43,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:43,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:03:43,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:03:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:03:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:03:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:03:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:03:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:03:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 08:03:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:03:43,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:03:43,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:03:43,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:03:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:03:45,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:03:45,815 INFO L299 CfgBuilder]: Removed 207 assume(true) statements. [2021-11-07 08:03:45,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:03:45 BoogieIcfgContainer [2021-11-07 08:03:45,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:03:45,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:03:45,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:03:45,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:03:45,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:03:42" (1/3) ... [2021-11-07 08:03:45,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c63c644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:03:45, skipping insertion in model container [2021-11-07 08:03:45,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:03:43" (2/3) ... [2021-11-07 08:03:45,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c63c644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:03:45, skipping insertion in model container [2021-11-07 08:03:45,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:03:45" (3/3) ... [2021-11-07 08:03:45,827 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-1.i [2021-11-07 08:03:45,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:03:45,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-07 08:03:45,884 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:03:45,890 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 [2021-11-07 08:03:45,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-07 08:03:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 462 states, 449 states have (on average 1.7438752783964366) internal successors, (783), 461 states have internal predecessors, (783), 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) [2021-11-07 08:03:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 08:03:45,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:45,923 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:03:45,923 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:45,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1757860351, now seen corresponding path program 1 times [2021-11-07 08:03:45,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:45,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74002277] [2021-11-07 08:03:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:45,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:46,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:46,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74002277] [2021-11-07 08:03:46,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74002277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:46,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:46,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:03:46,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121418068] [2021-11-07 08:03:46,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:03:46,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:46,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:03:46,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:03:46,161 INFO L87 Difference]: Start difference. First operand has 462 states, 449 states have (on average 1.7438752783964366) internal successors, (783), 461 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:46,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:46,217 INFO L93 Difference]: Finished difference Result 922 states and 1564 transitions. [2021-11-07 08:03:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:03:46,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 08:03:46,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:46,234 INFO L225 Difference]: With dead ends: 922 [2021-11-07 08:03:46,235 INFO L226 Difference]: Without dead ends: 449 [2021-11-07 08:03:46,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:03:46,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-07 08:03:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2021-11-07 08:03:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 437 states have (on average 1.3546910755148742) internal successors, (592), 448 states have internal predecessors, (592), 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) [2021-11-07 08:03:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 592 transitions. [2021-11-07 08:03:46,305 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 592 transitions. Word has length 7 [2021-11-07 08:03:46,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:46,306 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 592 transitions. [2021-11-07 08:03:46,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:46,306 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 592 transitions. [2021-11-07 08:03:46,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 08:03:46,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:46,307 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:03:46,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:03:46,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:46,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1805953417, now seen corresponding path program 1 times [2021-11-07 08:03:46,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:46,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599444266] [2021-11-07 08:03:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:46,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:46,343 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:03:46,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187180909] [2021-11-07 08:03:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:46,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:46,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:46,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:46,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:03:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:46,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 08:03:46,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:46,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:03:46,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 08:03:46,719 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 08:03:46,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-07 08:03:46,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-07 08:03:46,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:46,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:46,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599444266] [2021-11-07 08:03:46,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:03:46,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187180909] [2021-11-07 08:03:46,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187180909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:46,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:46,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:03:46,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638954980] [2021-11-07 08:03:46,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:03:46,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:46,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:03:46,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:03:46,816 INFO L87 Difference]: Start difference. First operand 449 states and 592 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:48,289 INFO L93 Difference]: Finished difference Result 541 states and 714 transitions. [2021-11-07 08:03:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:03:48,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 08:03:48,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:48,294 INFO L225 Difference]: With dead ends: 541 [2021-11-07 08:03:48,295 INFO L226 Difference]: Without dead ends: 539 [2021-11-07 08:03:48,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:03:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-07 08:03:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 455. [2021-11-07 08:03:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 443 states have (on average 1.3521444695259595) internal successors, (599), 454 states have internal predecessors, (599), 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) [2021-11-07 08:03:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 599 transitions. [2021-11-07 08:03:48,320 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 599 transitions. Word has length 7 [2021-11-07 08:03:48,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:48,320 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 599 transitions. [2021-11-07 08:03:48,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:03:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 599 transitions. [2021-11-07 08:03:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 08:03:48,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:48,323 INFO L513 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] [2021-11-07 08:03:48,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:48,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-07 08:03:48,539 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:48,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:48,539 INFO L85 PathProgramCache]: Analyzing trace with hash -723726499, now seen corresponding path program 1 times [2021-11-07 08:03:48,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:48,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975491525] [2021-11-07 08:03:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:48,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:48,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:48,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975491525] [2021-11-07 08:03:48,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975491525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:48,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:48,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:03:48,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790449287] [2021-11-07 08:03:48,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:03:48,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:48,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:03:48,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:03:48,629 INFO L87 Difference]: Start difference. First operand 455 states and 599 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-07 08:03:50,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:50,204 INFO L93 Difference]: Finished difference Result 722 states and 953 transitions. [2021-11-07 08:03:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:03:50,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-07 08:03:50,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:50,208 INFO L225 Difference]: With dead ends: 722 [2021-11-07 08:03:50,208 INFO L226 Difference]: Without dead ends: 455 [2021-11-07 08:03:50,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:03:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-11-07 08:03:50,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2021-11-07 08:03:50,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 443 states have (on average 1.3498871331828441) internal successors, (598), 454 states have internal predecessors, (598), 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) [2021-11-07 08:03:50,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 598 transitions. [2021-11-07 08:03:50,225 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 598 transitions. Word has length 42 [2021-11-07 08:03:50,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:50,225 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 598 transitions. [2021-11-07 08:03:50,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-07 08:03:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 598 transitions. [2021-11-07 08:03:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 08:03:50,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:50,228 INFO L513 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] [2021-11-07 08:03:50,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:03:50,229 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:50,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:50,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1626753544, now seen corresponding path program 1 times [2021-11-07 08:03:50,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:50,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017230083] [2021-11-07 08:03:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:50,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:50,256 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:03:50,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973197831] [2021-11-07 08:03:50,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:50,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:50,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:50,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:50,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:03:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:50,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:03:50,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:50,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:50,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017230083] [2021-11-07 08:03:50,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:03:50,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973197831] [2021-11-07 08:03:50,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973197831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:50,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:50,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:03:50,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078947039] [2021-11-07 08:03:50,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:03:50,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:50,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:03:50,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:03:50,652 INFO L87 Difference]: Start difference. First operand 455 states and 598 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:03:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:50,756 INFO L93 Difference]: Finished difference Result 923 states and 1219 transitions. [2021-11-07 08:03:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:03:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-07 08:03:50,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:50,763 INFO L225 Difference]: With dead ends: 923 [2021-11-07 08:03:50,764 INFO L226 Difference]: Without dead ends: 476 [2021-11-07 08:03:50,765 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:03:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-07 08:03:50,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 475. [2021-11-07 08:03:50,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 463 states have (on average 1.3347732181425487) internal successors, (618), 474 states have internal predecessors, (618), 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) [2021-11-07 08:03:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 618 transitions. [2021-11-07 08:03:50,800 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 618 transitions. Word has length 58 [2021-11-07 08:03:50,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:50,801 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 618 transitions. [2021-11-07 08:03:50,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:03:50,801 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 618 transitions. [2021-11-07 08:03:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 08:03:50,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:50,811 INFO L513 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] [2021-11-07 08:03:50,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:51,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:51,027 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:51,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:51,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1901513158, now seen corresponding path program 1 times [2021-11-07 08:03:51,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:51,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45768733] [2021-11-07 08:03:51,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:51,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:51,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:03:51,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404169804] [2021-11-07 08:03:51,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:51,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:51,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:51,068 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:51,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:03:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:51,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:03:51,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:51,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:51,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45768733] [2021-11-07 08:03:51,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:03:51,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404169804] [2021-11-07 08:03:51,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404169804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:51,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:51,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:03:51,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605488574] [2021-11-07 08:03:51,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:03:51,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:51,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:03:51,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:03:51,438 INFO L87 Difference]: Start difference. First operand 475 states and 618 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-11-07 08:03:51,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:51,526 INFO L93 Difference]: Finished difference Result 1016 states and 1330 transitions. [2021-11-07 08:03:51,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:03:51,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2021-11-07 08:03:51,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:51,530 INFO L225 Difference]: With dead ends: 1016 [2021-11-07 08:03:51,531 INFO L226 Difference]: Without dead ends: 549 [2021-11-07 08:03:51,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:03:51,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-07 08:03:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 461. [2021-11-07 08:03:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 449 states have (on average 1.329621380846325) internal successors, (597), 460 states have internal predecessors, (597), 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) [2021-11-07 08:03:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 597 transitions. [2021-11-07 08:03:51,548 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 597 transitions. Word has length 58 [2021-11-07 08:03:51,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:51,549 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 597 transitions. [2021-11-07 08:03:51,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-11-07 08:03:51,549 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 597 transitions. [2021-11-07 08:03:51,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 08:03:51,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:51,551 INFO L513 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] [2021-11-07 08:03:51,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:51,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:51,767 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:51,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:51,767 INFO L85 PathProgramCache]: Analyzing trace with hash 122423020, now seen corresponding path program 1 times [2021-11-07 08:03:51,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:51,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803048295] [2021-11-07 08:03:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:51,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:51,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:03:51,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437525604] [2021-11-07 08:03:51,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:51,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:51,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:51,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:51,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 08:03:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:52,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:03:52,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:52,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:52,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803048295] [2021-11-07 08:03:52,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:03:52,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437525604] [2021-11-07 08:03:52,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437525604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:52,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:52,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:03:52,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660703429] [2021-11-07 08:03:52,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:03:52,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:52,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:03:52,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:03:52,400 INFO L87 Difference]: Start difference. First operand 461 states and 597 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:03:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:52,501 INFO L93 Difference]: Finished difference Result 1169 states and 1514 transitions. [2021-11-07 08:03:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:03:52,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-07 08:03:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:52,509 INFO L225 Difference]: With dead ends: 1169 [2021-11-07 08:03:52,509 INFO L226 Difference]: Without dead ends: 716 [2021-11-07 08:03:52,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:03:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-07 08:03:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 705. [2021-11-07 08:03:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 693 states have (on average 1.3232323232323233) internal successors, (917), 704 states have internal predecessors, (917), 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) [2021-11-07 08:03:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 917 transitions. [2021-11-07 08:03:52,539 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 917 transitions. Word has length 58 [2021-11-07 08:03:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:52,540 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 917 transitions. [2021-11-07 08:03:52,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-07 08:03:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 917 transitions. [2021-11-07 08:03:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:03:52,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:52,544 INFO L513 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] [2021-11-07 08:03:52,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:52,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:52,758 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:52,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2142666769, now seen corresponding path program 1 times [2021-11-07 08:03:52,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:52,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848865589] [2021-11-07 08:03:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:52,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:52,802 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:03:52,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721324504] [2021-11-07 08:03:52,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:52,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:52,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:52,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:52,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 08:03:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:53,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 08:03:53,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:53,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 08:03:53,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:03:53,158 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 08:03:53,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-07 08:03:53,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2021-11-07 08:03:53,264 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-07 08:03:53,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2021-11-07 08:03:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:53,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:53,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848865589] [2021-11-07 08:03:53,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:03:53,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721324504] [2021-11-07 08:03:53,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721324504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:53,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:53,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:03:53,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199976320] [2021-11-07 08:03:53,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:03:53,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:53,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:03:53,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:03:53,413 INFO L87 Difference]: Start difference. First operand 705 states and 917 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2021-11-07 08:03:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:54,923 INFO L93 Difference]: Finished difference Result 1320 states and 1717 transitions. [2021-11-07 08:03:54,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:03:54,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2021-11-07 08:03:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:54,929 INFO L225 Difference]: With dead ends: 1320 [2021-11-07 08:03:54,929 INFO L226 Difference]: Without dead ends: 707 [2021-11-07 08:03:54,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:03:54,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-11-07 08:03:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 705. [2021-11-07 08:03:54,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 693 states have (on average 1.3217893217893217) internal successors, (916), 704 states have internal predecessors, (916), 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) [2021-11-07 08:03:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 916 transitions. [2021-11-07 08:03:54,960 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 916 transitions. Word has length 65 [2021-11-07 08:03:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:54,960 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 916 transitions. [2021-11-07 08:03:54,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2021-11-07 08:03:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 916 transitions. [2021-11-07 08:03:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 08:03:54,962 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:54,963 INFO L513 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, 1, 1, 1, 1] [2021-11-07 08:03:55,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:55,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:55,178 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:55,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash -961249944, now seen corresponding path program 1 times [2021-11-07 08:03:55,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:55,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092334544] [2021-11-07 08:03:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:55,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:55,237 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:03:55,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866889865] [2021-11-07 08:03:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:55,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:55,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:55,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:55,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 08:03:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:55,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:03:55,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:55,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:55,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092334544] [2021-11-07 08:03:55,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:03:55,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866889865] [2021-11-07 08:03:55,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866889865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:55,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:55,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:03:55,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977421428] [2021-11-07 08:03:55,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:03:55,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:55,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:03:55,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:03:55,869 INFO L87 Difference]: Start difference. First operand 705 states and 916 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-07 08:03:55,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:55,954 INFO L93 Difference]: Finished difference Result 1432 states and 1871 transitions. [2021-11-07 08:03:55,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:03:55,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2021-11-07 08:03:55,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:55,960 INFO L225 Difference]: With dead ends: 1432 [2021-11-07 08:03:55,960 INFO L226 Difference]: Without dead ends: 747 [2021-11-07 08:03:55,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:03:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-07 08:03:55,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 745. [2021-11-07 08:03:55,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 733 states have (on average 1.3042291950886766) internal successors, (956), 744 states have internal predecessors, (956), 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) [2021-11-07 08:03:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 956 transitions. [2021-11-07 08:03:55,988 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 956 transitions. Word has length 112 [2021-11-07 08:03:55,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:55,989 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 956 transitions. [2021-11-07 08:03:55,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-07 08:03:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 956 transitions. [2021-11-07 08:03:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 08:03:55,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:55,996 INFO L513 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, 1, 1, 1, 1] [2021-11-07 08:03:56,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-07 08:03:56,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:56,216 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:56,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:56,216 INFO L85 PathProgramCache]: Analyzing trace with hash 657724970, now seen corresponding path program 1 times [2021-11-07 08:03:56,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:56,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504785851] [2021-11-07 08:03:56,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:56,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:56,239 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:03:56,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138486683] [2021-11-07 08:03:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:56,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:56,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:56,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:56,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 08:03:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:56,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:03:56,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:56,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:56,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:56,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504785851] [2021-11-07 08:03:56,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:03:56,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138486683] [2021-11-07 08:03:56,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138486683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:56,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:56,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:03:56,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833908138] [2021-11-07 08:03:56,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:03:56,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:56,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:03:56,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:03:56,855 INFO L87 Difference]: Start difference. First operand 745 states and 956 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-11-07 08:03:56,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:56,944 INFO L93 Difference]: Finished difference Result 1426 states and 1836 transitions. [2021-11-07 08:03:56,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:03:56,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 112 [2021-11-07 08:03:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:56,951 INFO L225 Difference]: With dead ends: 1426 [2021-11-07 08:03:56,951 INFO L226 Difference]: Without dead ends: 719 [2021-11-07 08:03:56,953 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:03:56,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-07 08:03:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 717. [2021-11-07 08:03:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 705 states have (on average 1.29645390070922) internal successors, (914), 716 states have internal predecessors, (914), 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) [2021-11-07 08:03:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 914 transitions. [2021-11-07 08:03:56,979 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 914 transitions. Word has length 112 [2021-11-07 08:03:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:56,980 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 914 transitions. [2021-11-07 08:03:56,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-11-07 08:03:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 914 transitions. [2021-11-07 08:03:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 08:03:56,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:56,982 INFO L513 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, 1, 1, 1, 1] [2021-11-07 08:03:57,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:57,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:57,208 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:57,209 INFO L85 PathProgramCache]: Analyzing trace with hash -734122660, now seen corresponding path program 1 times [2021-11-07 08:03:57,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:57,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767021425] [2021-11-07 08:03:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:57,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:57,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:03:57,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025140208] [2021-11-07 08:03:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:57,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:57,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:57,230 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:57,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 08:03:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:57,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:03:57,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:57,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:57,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767021425] [2021-11-07 08:03:57,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:03:57,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025140208] [2021-11-07 08:03:57,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025140208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:57,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:57,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:03:57,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604481287] [2021-11-07 08:03:57,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:03:57,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:03:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:03:57,969 INFO L87 Difference]: Start difference. First operand 717 states and 914 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-07 08:03:58,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:58,061 INFO L93 Difference]: Finished difference Result 1672 states and 2157 transitions. [2021-11-07 08:03:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:03:58,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2021-11-07 08:03:58,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:58,068 INFO L225 Difference]: With dead ends: 1672 [2021-11-07 08:03:58,068 INFO L226 Difference]: Without dead ends: 1015 [2021-11-07 08:03:58,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:03:58,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-11-07 08:03:58,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 884. [2021-11-07 08:03:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 872 states have (on average 1.30848623853211) internal successors, (1141), 883 states have internal predecessors, (1141), 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) [2021-11-07 08:03:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1141 transitions. [2021-11-07 08:03:58,106 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1141 transitions. Word has length 112 [2021-11-07 08:03:58,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:58,106 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 1141 transitions. [2021-11-07 08:03:58,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-11-07 08:03:58,107 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1141 transitions. [2021-11-07 08:03:58,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 08:03:58,108 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:58,108 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:03:58,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:58,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 08:03:58,322 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:58,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:58,323 INFO L85 PathProgramCache]: Analyzing trace with hash -45356340, now seen corresponding path program 1 times [2021-11-07 08:03:58,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:58,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481652189] [2021-11-07 08:03:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:58,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:58,344 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:03:58,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937154827] [2021-11-07 08:03:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:58,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:58,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:58,346 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:58,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 08:03:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:58,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:03:58,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:03:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:03:59,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:59,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481652189] [2021-11-07 08:03:59,160 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:03:59,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937154827] [2021-11-07 08:03:59,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937154827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:59,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:59,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:03:59,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566243749] [2021-11-07 08:03:59,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:03:59,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:59,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:03:59,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:03:59,163 INFO L87 Difference]: Start difference. First operand 884 states and 1141 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 08:03:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:03:59,223 INFO L93 Difference]: Finished difference Result 1717 states and 2228 transitions. [2021-11-07 08:03:59,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:03:59,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 119 [2021-11-07 08:03:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:03:59,230 INFO L225 Difference]: With dead ends: 1717 [2021-11-07 08:03:59,230 INFO L226 Difference]: Without dead ends: 887 [2021-11-07 08:03:59,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:03:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-07 08:03:59,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2021-11-07 08:03:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 875 states have (on average 1.3074285714285714) internal successors, (1144), 886 states have internal predecessors, (1144), 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) [2021-11-07 08:03:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1144 transitions. [2021-11-07 08:03:59,263 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1144 transitions. Word has length 119 [2021-11-07 08:03:59,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:03:59,263 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1144 transitions. [2021-11-07 08:03:59,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2021-11-07 08:03:59,264 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1144 transitions. [2021-11-07 08:03:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 08:03:59,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:03:59,265 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:03:59,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:03:59,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 08:03:59,490 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:03:59,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:03:59,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1862746591, now seen corresponding path program 1 times [2021-11-07 08:03:59,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:03:59,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823231489] [2021-11-07 08:03:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:59,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:03:59,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:03:59,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776896573] [2021-11-07 08:03:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:03:59,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:03:59,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:03:59,512 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:03:59,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 08:04:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:00,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 08:04:00,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:04:00,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:00,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823231489] [2021-11-07 08:04:00,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:04:00,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776896573] [2021-11-07 08:04:00,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776896573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:00,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:04:00,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 08:04:00,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87818507] [2021-11-07 08:04:00,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:04:00,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:04:00,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:04:00,460 INFO L87 Difference]: Start difference. First operand 887 states and 1144 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2021-11-07 08:04:00,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:00,542 INFO L93 Difference]: Finished difference Result 1722 states and 2233 transitions. [2021-11-07 08:04:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:04:00,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 121 [2021-11-07 08:04:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:00,548 INFO L225 Difference]: With dead ends: 1722 [2021-11-07 08:04:00,548 INFO L226 Difference]: Without dead ends: 890 [2021-11-07 08:04:00,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:04:00,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-11-07 08:04:00,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 890. [2021-11-07 08:04:00,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 878 states have (on average 1.306378132118451) internal successors, (1147), 889 states have internal predecessors, (1147), 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) [2021-11-07 08:04:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1147 transitions. [2021-11-07 08:04:00,580 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1147 transitions. Word has length 121 [2021-11-07 08:04:00,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:00,581 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 1147 transitions. [2021-11-07 08:04:00,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2021-11-07 08:04:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1147 transitions. [2021-11-07 08:04:00,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 08:04:00,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:00,583 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 08:04:00,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:00,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 08:04:00,801 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:04:00,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:00,801 INFO L85 PathProgramCache]: Analyzing trace with hash -2036970836, now seen corresponding path program 2 times [2021-11-07 08:04:00,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:00,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244867102] [2021-11-07 08:04:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:00,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:00,823 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:04:00,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574088188] [2021-11-07 08:04:00,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:04:00,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:00,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:00,825 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:00,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 08:04:01,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 08:04:01,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:04:01,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:04:01,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 08:04:01,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:01,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244867102] [2021-11-07 08:04:01,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:04:01,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574088188] [2021-11-07 08:04:01,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574088188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:04:01,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:04:01,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:04:01,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382206375] [2021-11-07 08:04:01,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:04:01,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:01,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:04:01,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:04:01,664 INFO L87 Difference]: Start difference. First operand 890 states and 1147 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-07 08:04:01,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:01,732 INFO L93 Difference]: Finished difference Result 1724 states and 2234 transitions. [2021-11-07 08:04:01,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:04:01,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 123 [2021-11-07 08:04:01,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:01,738 INFO L225 Difference]: With dead ends: 1724 [2021-11-07 08:04:01,739 INFO L226 Difference]: Without dead ends: 893 [2021-11-07 08:04:01,740 INFO L786 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 [2021-11-07 08:04:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-11-07 08:04:01,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 893. [2021-11-07 08:04:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 881 states have (on average 1.3053348467650396) internal successors, (1150), 892 states have internal predecessors, (1150), 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) [2021-11-07 08:04:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1150 transitions. [2021-11-07 08:04:01,772 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1150 transitions. Word has length 123 [2021-11-07 08:04:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:01,773 INFO L470 AbstractCegarLoop]: Abstraction has 893 states and 1150 transitions. [2021-11-07 08:04:01,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2021-11-07 08:04:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1150 transitions. [2021-11-07 08:04:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 08:04:01,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:01,775 INFO L513 BasicCegarLoop]: trace histogram [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, 1] [2021-11-07 08:04:01,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:01,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:01,990 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:04:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:01,991 INFO L85 PathProgramCache]: Analyzing trace with hash -391633441, now seen corresponding path program 1 times [2021-11-07 08:04:01,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:01,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029562187] [2021-11-07 08:04:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:01,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:02,017 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:04:02,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574299944] [2021-11-07 08:04:02,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:02,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:02,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:02,019 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:02,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 08:04:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:04:02,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 08:04:02,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:04:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 08:04:03,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:04:03,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029562187] [2021-11-07 08:04:03,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:04:03,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574299944] [2021-11-07 08:04:03,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574299944] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:04:03,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:04:03,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-07 08:04:03,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955005005] [2021-11-07 08:04:03,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:04:03,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:04:03,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:04:03,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:04:03,039 INFO L87 Difference]: Start difference. First operand 893 states and 1150 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2021-11-07 08:04:03,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:04:03,245 INFO L93 Difference]: Finished difference Result 3329 states and 4325 transitions. [2021-11-07 08:04:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:04:03,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 125 [2021-11-07 08:04:03,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:04:03,260 INFO L225 Difference]: With dead ends: 3329 [2021-11-07 08:04:03,260 INFO L226 Difference]: Without dead ends: 2496 [2021-11-07 08:04:03,261 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:04:03,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-11-07 08:04:03,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 896. [2021-11-07 08:04:03,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 884 states have (on average 1.3042986425339367) internal successors, (1153), 895 states have internal predecessors, (1153), 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) [2021-11-07 08:04:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1153 transitions. [2021-11-07 08:04:03,316 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1153 transitions. Word has length 125 [2021-11-07 08:04:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:04:03,317 INFO L470 AbstractCegarLoop]: Abstraction has 896 states and 1153 transitions. [2021-11-07 08:04:03,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2021-11-07 08:04:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1153 transitions. [2021-11-07 08:04:03,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 08:04:03,319 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:04:03,319 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:04:03,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:04:03,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:03,534 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2021-11-07 08:04:03,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:04:03,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1280834996, now seen corresponding path program 2 times [2021-11-07 08:04:03,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:04:03,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449227083] [2021-11-07 08:04:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:04:03,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:04:03,557 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:04:03,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501690096] [2021-11-07 08:04:03,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:04:03,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:04:03,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:04:03,559 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:04:03,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8f85a6a-f53a-49a4-ab07-65cbd9a0fd5c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process