./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/uniq-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/uniq-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 12c779c027471bf15192285c26a96841dcf1579b21a71f6313a877ba4e2f7c7d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:06,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:06,142 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:51:06,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:06,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:06,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:06,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:06,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:06,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:06,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:06,203 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:06,205 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:06,205 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:06,207 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:51:06,208 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:06,208 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:06,209 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:51:06,209 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:51:06,210 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:06,210 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:51:06,211 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:51:06,211 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:51:06,213 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:06,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:51:06,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:06,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:06,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:51:06,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:06,215 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:51:06,216 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:51:06,217 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:51:06,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:51:06,218 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:06,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:06,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:06,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:06,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:06,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:06,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:51:06,220 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:51:06,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:51:06,220 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:51:06,220 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:06,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:06,221 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12c779c027471bf15192285c26a96841dcf1579b21a71f6313a877ba4e2f7c7d [2023-11-19 04:51:06,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:06,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:06,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:06,615 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:06,616 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:06,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/busybox-1.22.0/uniq-1.i [2023-11-19 04:51:09,963 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:10,482 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:10,483 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/sv-benchmarks/c/busybox-1.22.0/uniq-1.i [2023-11-19 04:51:10,534 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/data/a2735bc0d/d0b0bce2a12b448dadd805fb8efb759d/FLAG0ffdf8cc6 [2023-11-19 04:51:10,557 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/data/a2735bc0d/d0b0bce2a12b448dadd805fb8efb759d [2023-11-19 04:51:10,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:10,566 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:10,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:10,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:10,579 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:10,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:10" (1/1) ... [2023-11-19 04:51:10,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c33781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:10, skipping insertion in model container [2023-11-19 04:51:10,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:10" (1/1) ... [2023-11-19 04:51:10,690 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:12,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:12,465 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:51:12,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:12,851 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:12,852 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:12,852 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:12,852 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:12,852 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:12,852 WARN L675 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:12,853 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:51:12,861 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:51:12,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12 WrapperNode [2023-11-19 04:51:12,862 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:12,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:12,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:51:12,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:51:12,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (1/1) ... [2023-11-19 04:51:12,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (1/1) ... [2023-11-19 04:51:13,117 INFO L138 Inliner]: procedures = 600, calls = 440, calls flagged for inlining = 31, calls inlined = 30, statements flattened = 1892 [2023-11-19 04:51:13,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:13,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:51:13,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:51:13,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:51:13,135 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (1/1) ... [2023-11-19 04:51:13,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (1/1) ... [2023-11-19 04:51:13,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (1/1) ... [2023-11-19 04:51:13,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (1/1) ... [2023-11-19 04:51:13,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (1/1) ... [2023-11-19 04:51:13,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (1/1) ... [2023-11-19 04:51:13,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (1/1) ... [2023-11-19 04:51:13,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (1/1) ... [2023-11-19 04:51:13,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:51:13,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:51:13,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:51:13,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:51:13,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (1/1) ... [2023-11-19 04:51:13,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:13,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:13,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:51:13,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:51:13,552 INFO L130 BoogieDeclarations]: Found specification of procedure xopen [2023-11-19 04:51:13,552 INFO L138 BoogieDeclarations]: Found implementation of procedure xopen [2023-11-19 04:51:13,553 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-19 04:51:13,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 04:51:13,555 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 04:51:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-19 04:51:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 04:51:13,555 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 04:51:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 04:51:13,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:51:13,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 04:51:13,556 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 04:51:13,556 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 04:51:13,557 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-19 04:51:13,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:51:13,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:51:13,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:51:13,558 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 04:51:13,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:51:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:51:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:51:13,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:51:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 04:51:13,560 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 04:51:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 04:51:13,561 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 04:51:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 04:51:13,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:51:13,562 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-19 04:51:13,562 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-19 04:51:13,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:51:13,562 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:51:13,562 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:51:13,563 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:51:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:51:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:51:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-19 04:51:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:51:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2023-11-19 04:51:13,564 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2023-11-19 04:51:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:51:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 04:51:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 04:51:13,565 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 04:51:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:51:14,208 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:51:14,211 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:51:16,254 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:51:17,003 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:51:17,003 INFO L302 CfgBuilder]: Removed 33 assume(true) statements. [2023-11-19 04:51:17,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:17 BoogieIcfgContainer [2023-11-19 04:51:17,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:51:17,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:51:17,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:51:17,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:51:17,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:51:10" (1/3) ... [2023-11-19 04:51:17,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143b74ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:17, skipping insertion in model container [2023-11-19 04:51:17,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:12" (2/3) ... [2023-11-19 04:51:17,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143b74ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:17, skipping insertion in model container [2023-11-19 04:51:17,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:17" (3/3) ... [2023-11-19 04:51:17,031 INFO L112 eAbstractionObserver]: Analyzing ICFG uniq-1.i [2023-11-19 04:51:17,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:51:17,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 77 error locations. [2023-11-19 04:51:17,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:51:17,129 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41d2c561, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:51:17,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2023-11-19 04:51:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 472 states, 349 states have (on average 1.6876790830945558) internal successors, (589), 428 states have internal predecessors, (589), 34 states have call successors, (34), 11 states have call predecessors, (34), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-19 04:51:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:51:17,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:17,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:51:17,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:17,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:17,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1892551, now seen corresponding path program 1 times [2023-11-19 04:51:17,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:17,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733426782] [2023-11-19 04:51:17,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:17,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:17,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:17,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733426782] [2023-11-19 04:51:17,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733426782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:17,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:17,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:51:17,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17264000] [2023-11-19 04:51:17,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:17,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:17,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:17,705 INFO L87 Difference]: Start difference. First operand has 472 states, 349 states have (on average 1.6876790830945558) internal successors, (589), 428 states have internal predecessors, (589), 34 states have call successors, (34), 11 states have call predecessors, (34), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:18,190 INFO L93 Difference]: Finished difference Result 928 states and 1318 transitions. [2023-11-19 04:51:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:18,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 04:51:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:18,208 INFO L225 Difference]: With dead ends: 928 [2023-11-19 04:51:18,208 INFO L226 Difference]: Without dead ends: 453 [2023-11-19 04:51:18,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:18,236 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 1 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:18,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1040 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:51:18,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-11-19 04:51:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2023-11-19 04:51:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 339 states have (on average 1.5811209439528024) internal successors, (536), 419 states have internal predecessors, (536), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 594 transitions. [2023-11-19 04:51:18,319 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 594 transitions. Word has length 3 [2023-11-19 04:51:18,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:18,319 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 594 transitions. [2023-11-19 04:51:18,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:18,320 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 594 transitions. [2023-11-19 04:51:18,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:51:18,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:18,321 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 04:51:18,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:51:18,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:18,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash 546814994, now seen corresponding path program 1 times [2023-11-19 04:51:18,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:18,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109876388] [2023-11-19 04:51:18,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:18,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:18,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109876388] [2023-11-19 04:51:18,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109876388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:18,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014115221] [2023-11-19 04:51:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:18,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:18,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:18,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:18,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:51:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:18,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:18,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:18,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:18,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014115221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:18,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:18,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 04:51:18,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202602067] [2023-11-19 04:51:18,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:18,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:51:18,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:18,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:51:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:18,954 INFO L87 Difference]: Start difference. First operand 453 states and 594 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:19,324 INFO L93 Difference]: Finished difference Result 453 states and 594 transitions. [2023-11-19 04:51:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:51:19,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:51:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:19,331 INFO L225 Difference]: With dead ends: 453 [2023-11-19 04:51:19,331 INFO L226 Difference]: Without dead ends: 452 [2023-11-19 04:51:19,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:19,337 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 3 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:19,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1024 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:51:19,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-11-19 04:51:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2023-11-19 04:51:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 339 states have (on average 1.5781710914454277) internal successors, (535), 418 states have internal predecessors, (535), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:19,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 593 transitions. [2023-11-19 04:51:19,380 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 593 transitions. Word has length 6 [2023-11-19 04:51:19,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:19,380 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 593 transitions. [2023-11-19 04:51:19,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:51:19,381 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 593 transitions. [2023-11-19 04:51:19,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:51:19,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:19,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-19 04:51:19,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:19,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:19,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:19,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -228603964, now seen corresponding path program 1 times [2023-11-19 04:51:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:19,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061011691] [2023-11-19 04:51:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:51:19,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:19,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061011691] [2023-11-19 04:51:19,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061011691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:19,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:19,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:51:19,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89591579] [2023-11-19 04:51:19,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:19,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:19,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:19,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:19,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:19,753 INFO L87 Difference]: Start difference. First operand 452 states and 593 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-19 04:51:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:20,080 INFO L93 Difference]: Finished difference Result 452 states and 593 transitions. [2023-11-19 04:51:20,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:20,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-11-19 04:51:20,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:20,085 INFO L225 Difference]: With dead ends: 452 [2023-11-19 04:51:20,085 INFO L226 Difference]: Without dead ends: 451 [2023-11-19 04:51:20,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:20,093 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 0 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:20,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1024 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:51:20,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-11-19 04:51:20,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 449. [2023-11-19 04:51:20,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 337 states have (on average 1.5786350148367954) internal successors, (532), 415 states have internal predecessors, (532), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 590 transitions. [2023-11-19 04:51:20,130 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 590 transitions. Word has length 7 [2023-11-19 04:51:20,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:20,130 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 590 transitions. [2023-11-19 04:51:20,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-19 04:51:20,131 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 590 transitions. [2023-11-19 04:51:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:51:20,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:20,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:20,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:51:20,134 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:20,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:20,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1007485241, now seen corresponding path program 1 times [2023-11-19 04:51:20,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:20,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121012889] [2023-11-19 04:51:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:20,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:20,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:20,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121012889] [2023-11-19 04:51:20,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121012889] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:20,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180713120] [2023-11-19 04:51:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:20,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:20,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:20,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:20,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:51:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:20,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:20,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:51:20,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:20,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180713120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:20,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:20,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:20,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65976997] [2023-11-19 04:51:20,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:20,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:20,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:20,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:20,664 INFO L87 Difference]: Start difference. First operand 449 states and 590 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:20,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:20,970 INFO L93 Difference]: Finished difference Result 449 states and 590 transitions. [2023-11-19 04:51:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:20,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-19 04:51:20,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:20,975 INFO L225 Difference]: With dead ends: 449 [2023-11-19 04:51:20,975 INFO L226 Difference]: Without dead ends: 447 [2023-11-19 04:51:20,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:20,981 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 391 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:20,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 667 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:51:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-19 04:51:21,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2023-11-19 04:51:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 337 states have (on average 1.572700296735905) internal successors, (530), 413 states have internal predecessors, (530), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:21,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 588 transitions. [2023-11-19 04:51:21,039 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 588 transitions. Word has length 9 [2023-11-19 04:51:21,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:21,041 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 588 transitions. [2023-11-19 04:51:21,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:21,041 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 588 transitions. [2023-11-19 04:51:21,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:51:21,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:21,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:21,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:21,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:21,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:21,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:21,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1167271814, now seen corresponding path program 1 times [2023-11-19 04:51:21,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:21,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698384130] [2023-11-19 04:51:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:21,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:21,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:21,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698384130] [2023-11-19 04:51:21,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698384130] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:21,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267258886] [2023-11-19 04:51:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:21,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:21,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:21,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:21,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:51:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:21,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:21,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:21,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:51:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:21,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267258886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:51:21,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [805854883] [2023-11-19 04:51:21,831 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-19 04:51:21,831 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:51:21,836 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:51:21,842 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:51:21,842 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:51:28,114 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-11-19 04:51:28,180 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:51:30,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [805854883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:30,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:51:30,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 3, 4] total 13 [2023-11-19 04:51:30,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538286957] [2023-11-19 04:51:30,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:30,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:51:30,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:30,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:51:30,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:51:30,407 INFO L87 Difference]: Start difference. First operand 447 states and 588 transitions. Second operand has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:33,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:33,170 INFO L93 Difference]: Finished difference Result 449 states and 589 transitions. [2023-11-19 04:51:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:51:33,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-19 04:51:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:33,175 INFO L225 Difference]: With dead ends: 449 [2023-11-19 04:51:33,175 INFO L226 Difference]: Without dead ends: 447 [2023-11-19 04:51:33,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-19 04:51:33,177 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 4 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:33,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1733 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-19 04:51:33,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-19 04:51:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2023-11-19 04:51:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 338 states have (on average 1.5650887573964498) internal successors, (529), 412 states have internal predecessors, (529), 34 states have call successors, (34), 12 states have call predecessors, (34), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:33,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 587 transitions. [2023-11-19 04:51:33,205 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 587 transitions. Word has length 10 [2023-11-19 04:51:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:33,205 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 587 transitions. [2023-11-19 04:51:33,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 587 transitions. [2023-11-19 04:51:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:51:33,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:33,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:33,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:33,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:33,417 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:33,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:33,417 INFO L85 PathProgramCache]: Analyzing trace with hash -944727678, now seen corresponding path program 1 times [2023-11-19 04:51:33,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:33,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703728631] [2023-11-19 04:51:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:33,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:33,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:33,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703728631] [2023-11-19 04:51:33,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703728631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077714659] [2023-11-19 04:51:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:33,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:33,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:33,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:33,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:51:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:33,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:33,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:51:33,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:33,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077714659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:33,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:33,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:33,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903742090] [2023-11-19 04:51:33,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:33,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:33,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:33,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:33,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:33,944 INFO L87 Difference]: Start difference. First operand 447 states and 587 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:34,281 INFO L93 Difference]: Finished difference Result 447 states and 587 transitions. [2023-11-19 04:51:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:34,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-19 04:51:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:34,287 INFO L225 Difference]: With dead ends: 447 [2023-11-19 04:51:34,288 INFO L226 Difference]: Without dead ends: 446 [2023-11-19 04:51:34,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:34,289 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 7 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:34,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1005 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:51:34,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2023-11-19 04:51:34,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2023-11-19 04:51:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 338 states have (on average 1.5621301775147929) internal successors, (528), 411 states have internal predecessors, (528), 34 states have call successors, (34), 12 states have call predecessors, (34), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 586 transitions. [2023-11-19 04:51:34,324 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 586 transitions. Word has length 15 [2023-11-19 04:51:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:34,324 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 586 transitions. [2023-11-19 04:51:34,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 586 transitions. [2023-11-19 04:51:34,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:51:34,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:34,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:34,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 04:51:34,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 04:51:34,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:34,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash -944777690, now seen corresponding path program 1 times [2023-11-19 04:51:34,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:34,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442227303] [2023-11-19 04:51:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:34,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:34,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:34,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442227303] [2023-11-19 04:51:34,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442227303] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:34,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346943575] [2023-11-19 04:51:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:34,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:34,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:34,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:34,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:51:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:35,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:35,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:51:35,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:35,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346943575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:35,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:35,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:35,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686015424] [2023-11-19 04:51:35,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:35,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:35,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:35,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:35,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:35,202 INFO L87 Difference]: Start difference. First operand 446 states and 586 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:35,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:35,505 INFO L93 Difference]: Finished difference Result 446 states and 586 transitions. [2023-11-19 04:51:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:35,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-19 04:51:35,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:35,511 INFO L225 Difference]: With dead ends: 446 [2023-11-19 04:51:35,512 INFO L226 Difference]: Without dead ends: 445 [2023-11-19 04:51:35,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:35,513 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 2 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:35,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1009 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:51:35,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-11-19 04:51:35,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2023-11-19 04:51:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 338 states have (on average 1.5591715976331362) internal successors, (527), 410 states have internal predecessors, (527), 34 states have call successors, (34), 12 states have call predecessors, (34), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 585 transitions. [2023-11-19 04:51:35,540 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 585 transitions. Word has length 15 [2023-11-19 04:51:35,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:35,541 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 585 transitions. [2023-11-19 04:51:35,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:35,541 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 585 transitions. [2023-11-19 04:51:35,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:51:35,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:35,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:35,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:35,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 04:51:35,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:35,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash 825184781, now seen corresponding path program 1 times [2023-11-19 04:51:35,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:35,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696508429] [2023-11-19 04:51:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:35,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:35,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:35,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696508429] [2023-11-19 04:51:35,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696508429] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:35,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28371427] [2023-11-19 04:51:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:35,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:35,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:35,994 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:36,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:51:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:36,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:36,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:51:36,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:36,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28371427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:36,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:36,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:36,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491510349] [2023-11-19 04:51:36,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:36,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:36,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:36,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:36,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:36,386 INFO L87 Difference]: Start difference. First operand 445 states and 585 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:36,654 INFO L93 Difference]: Finished difference Result 449 states and 591 transitions. [2023-11-19 04:51:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:36,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-19 04:51:36,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:36,659 INFO L225 Difference]: With dead ends: 449 [2023-11-19 04:51:36,659 INFO L226 Difference]: Without dead ends: 448 [2023-11-19 04:51:36,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:36,660 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 260 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:36,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 772 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:51:36,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-11-19 04:51:36,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 444. [2023-11-19 04:51:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 338 states have (on average 1.5562130177514792) internal successors, (526), 409 states have internal predecessors, (526), 34 states have call successors, (34), 12 states have call predecessors, (34), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:36,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 584 transitions. [2023-11-19 04:51:36,688 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 584 transitions. Word has length 16 [2023-11-19 04:51:36,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:36,689 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 584 transitions. [2023-11-19 04:51:36,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 584 transitions. [2023-11-19 04:51:36,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:51:36,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:36,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:36,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:36,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 04:51:36,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:36,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:36,905 INFO L85 PathProgramCache]: Analyzing trace with hash 778213503, now seen corresponding path program 1 times [2023-11-19 04:51:36,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:36,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185786514] [2023-11-19 04:51:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:36,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:37,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:37,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185786514] [2023-11-19 04:51:37,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185786514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:37,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697713975] [2023-11-19 04:51:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:37,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:37,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:37,062 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:37,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:51:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:37,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:37,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:51:37,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697713975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:37,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:37,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654468701] [2023-11-19 04:51:37,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:37,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:37,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:37,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:37,417 INFO L87 Difference]: Start difference. First operand 444 states and 584 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:37,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:37,748 INFO L93 Difference]: Finished difference Result 452 states and 594 transitions. [2023-11-19 04:51:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:37,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-19 04:51:37,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:37,753 INFO L225 Difference]: With dead ends: 452 [2023-11-19 04:51:37,753 INFO L226 Difference]: Without dead ends: 451 [2023-11-19 04:51:37,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:37,754 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 4 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:37,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1006 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:51:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-11-19 04:51:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 450. [2023-11-19 04:51:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 344 states have (on average 1.555232558139535) internal successors, (535), 415 states have internal predecessors, (535), 34 states have call successors, (34), 12 states have call predecessors, (34), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 593 transitions. [2023-11-19 04:51:37,782 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 593 transitions. Word has length 16 [2023-11-19 04:51:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:37,782 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 593 transitions. [2023-11-19 04:51:37,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 593 transitions. [2023-11-19 04:51:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:51:37,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:37,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:37,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:38,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:38,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:38,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash 776663122, now seen corresponding path program 1 times [2023-11-19 04:51:38,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:38,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012107450] [2023-11-19 04:51:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:38,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:38,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:38,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012107450] [2023-11-19 04:51:38,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012107450] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:38,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424852976] [2023-11-19 04:51:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:38,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:38,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:38,179 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:38,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:51:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:38,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:38,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:51:38,524 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:38,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424852976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:38,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:38,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:38,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975238448] [2023-11-19 04:51:38,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:38,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:38,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:38,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:38,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:38,527 INFO L87 Difference]: Start difference. First operand 450 states and 593 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:38,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:38,859 INFO L93 Difference]: Finished difference Result 890 states and 1176 transitions. [2023-11-19 04:51:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:38,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-19 04:51:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:38,864 INFO L225 Difference]: With dead ends: 890 [2023-11-19 04:51:38,865 INFO L226 Difference]: Without dead ends: 456 [2023-11-19 04:51:38,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:38,867 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 0 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:38,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1008 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:51:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-11-19 04:51:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2023-11-19 04:51:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 350 states have (on average 1.5457142857142858) internal successors, (541), 421 states have internal predecessors, (541), 34 states have call successors, (34), 12 states have call predecessors, (34), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 599 transitions. [2023-11-19 04:51:38,899 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 599 transitions. Word has length 16 [2023-11-19 04:51:38,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:38,899 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 599 transitions. [2023-11-19 04:51:38,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:38,900 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 599 transitions. [2023-11-19 04:51:38,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 04:51:38,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:38,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:38,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:39,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 04:51:39,127 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:39,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:39,127 INFO L85 PathProgramCache]: Analyzing trace with hash -189075098, now seen corresponding path program 1 times [2023-11-19 04:51:39,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:39,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708667258] [2023-11-19 04:51:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:39,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:39,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708667258] [2023-11-19 04:51:39,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708667258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976839332] [2023-11-19 04:51:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:39,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:39,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:39,298 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:39,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:51:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:39,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:39,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:51:39,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:39,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976839332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:39,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:39,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:39,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357403752] [2023-11-19 04:51:39,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:39,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:39,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:39,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:39,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:39,717 INFO L87 Difference]: Start difference. First operand 456 states and 599 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:40,126 INFO L93 Difference]: Finished difference Result 658 states and 883 transitions. [2023-11-19 04:51:40,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:40,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-19 04:51:40,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:40,133 INFO L225 Difference]: With dead ends: 658 [2023-11-19 04:51:40,133 INFO L226 Difference]: Without dead ends: 657 [2023-11-19 04:51:40,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:40,135 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 258 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:40,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 996 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:51:40,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-11-19 04:51:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 460. [2023-11-19 04:51:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 354 states have (on average 1.5423728813559323) internal successors, (546), 425 states have internal predecessors, (546), 34 states have call successors, (34), 12 states have call predecessors, (34), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 604 transitions. [2023-11-19 04:51:40,166 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 604 transitions. Word has length 17 [2023-11-19 04:51:40,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:40,166 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 604 transitions. [2023-11-19 04:51:40,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 604 transitions. [2023-11-19 04:51:40,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:51:40,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:40,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:40,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:40,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:40,392 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:40,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:40,392 INFO L85 PathProgramCache]: Analyzing trace with hash 582676003, now seen corresponding path program 1 times [2023-11-19 04:51:40,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:40,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699587263] [2023-11-19 04:51:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:40,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:51:40,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:40,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699587263] [2023-11-19 04:51:40,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699587263] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:40,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105092929] [2023-11-19 04:51:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:40,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:40,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:40,599 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:40,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 04:51:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:40,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:40,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:51:40,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:40,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105092929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:40,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:51:40,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 04:51:41,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029268170] [2023-11-19 04:51:41,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:41,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:41,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:41,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:41,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:41,002 INFO L87 Difference]: Start difference. First operand 460 states and 604 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:41,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:41,328 INFO L93 Difference]: Finished difference Result 460 states and 604 transitions. [2023-11-19 04:51:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:51:41,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-19 04:51:41,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:41,336 INFO L225 Difference]: With dead ends: 460 [2023-11-19 04:51:41,336 INFO L226 Difference]: Without dead ends: 459 [2023-11-19 04:51:41,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:51:41,337 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 0 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:41,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1007 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:51:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-19 04:51:41,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 455. [2023-11-19 04:51:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 350 states have (on average 1.542857142857143) internal successors, (540), 420 states have internal predecessors, (540), 34 states have call successors, (34), 12 states have call predecessors, (34), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:41,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 598 transitions. [2023-11-19 04:51:41,373 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 598 transitions. Word has length 19 [2023-11-19 04:51:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:41,373 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 598 transitions. [2023-11-19 04:51:41,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 598 transitions. [2023-11-19 04:51:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 04:51:41,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:41,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:41,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:41,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 04:51:41,593 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:41,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1380879469, now seen corresponding path program 1 times [2023-11-19 04:51:41,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:41,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884284645] [2023-11-19 04:51:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:41,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:51:41,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:41,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884284645] [2023-11-19 04:51:41,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884284645] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:41,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276437402] [2023-11-19 04:51:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:41,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:41,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:41,774 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:41,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 04:51:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:42,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:42,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:51:42,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:51:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:51:42,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276437402] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:51:42,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1360901814] [2023-11-19 04:51:42,213 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-11-19 04:51:42,213 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:51:42,213 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:51:42,214 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:51:42,214 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:51:46,268 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-11-19 04:51:46,298 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:51:50,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1360901814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:50,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:51:50,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 3, 4] total 15 [2023-11-19 04:51:50,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155253384] [2023-11-19 04:51:50,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:50,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 04:51:50,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:51:50,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 04:51:50,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-19 04:51:50,660 INFO L87 Difference]: Start difference. First operand 455 states and 598 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:54,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:51:54,814 INFO L93 Difference]: Finished difference Result 883 states and 1164 transitions. [2023-11-19 04:51:54,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 04:51:54,815 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-19 04:51:54,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:51:54,819 INFO L225 Difference]: With dead ends: 883 [2023-11-19 04:51:54,819 INFO L226 Difference]: Without dead ends: 455 [2023-11-19 04:51:54,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-19 04:51:54,824 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 2 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:51:54,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2557 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 921 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 04:51:54,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-11-19 04:51:54,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2023-11-19 04:51:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 350 states have (on average 1.54) internal successors, (539), 420 states have internal predecessors, (539), 34 states have call successors, (34), 12 states have call predecessors, (34), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:51:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 597 transitions. [2023-11-19 04:51:54,853 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 597 transitions. Word has length 21 [2023-11-19 04:51:54,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:51:54,853 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 597 transitions. [2023-11-19 04:51:54,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 04:51:54,854 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 597 transitions. [2023-11-19 04:51:54,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 04:51:54,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:54,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:54,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 04:51:55,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 04:51:55,058 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 74 more)] === [2023-11-19 04:51:55,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:55,059 INFO L85 PathProgramCache]: Analyzing trace with hash 250221864, now seen corresponding path program 1 times [2023-11-19 04:51:55,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:51:55,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338850689] [2023-11-19 04:51:55,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:55,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:51:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:51:55,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:51:55,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338850689] [2023-11-19 04:51:55,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338850689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:51:55,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525949735] [2023-11-19 04:51:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:55,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:51:55,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:55,221 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:51:55,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bd07e1b-8517-484f-987a-1d8d74ac59d9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 04:51:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:55,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:51:55,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:51:55,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:51:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:51:55,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525949735] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:51:55,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2037298826] [2023-11-19 04:51:55,669 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-19 04:51:55,670 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:51:55,670 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:51:55,670 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:51:55,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs