./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2b93d9cdf019464a7132a47df13bc38f66feab56a28fc9b80b5d3e4c2c3e53cd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:56:26,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:56:26,547 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-26 11:56:26,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:56:26,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:56:26,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:56:26,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:56:26,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:56:26,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:56:26,579 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:56:26,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:56:26,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:56:26,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:56:26,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:56:26,582 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:56:26,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:56:26,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:56:26,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:56:26,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:56:26,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:56:26,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:56:26,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:56:26,586 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:56:26,587 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:56:26,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:56:26,588 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:56:26,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:56:26,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:56:26,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:56:26,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:56:26,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:56:26,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:56:26,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:56:26,592 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:56:26,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:56:26,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:56:26,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:56:26,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:56:26,594 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:56:26,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:56:26,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:56:26,596 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b93d9cdf019464a7132a47df13bc38f66feab56a28fc9b80b5d3e4c2c3e53cd [2023-11-26 11:56:26,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:56:26,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:56:26,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:56:26,880 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:56:26,881 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:56:26,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-1.i [2023-11-26 11:56:30,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:56:30,540 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:56:30,540 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-1.i [2023-11-26 11:56:30,583 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/data/3de398bf2/f1cc0238e00c43139626253a39c6c2c6/FLAG22146edd1 [2023-11-26 11:56:30,602 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/data/3de398bf2/f1cc0238e00c43139626253a39c6c2c6 [2023-11-26 11:56:30,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:56:30,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:56:30,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:30,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:56:30,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:56:30,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:30" (1/1) ... [2023-11-26 11:56:30,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcb1da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:30, skipping insertion in model container [2023-11-26 11:56:30,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:56:30" (1/1) ... [2023-11-26 11:56:30,713 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:56:32,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:32,222 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:56:32,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:56:32,591 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:56:32,591 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:56:32,599 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:56:32,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32 WrapperNode [2023-11-26 11:56:32,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:56:32,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:32,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:56:32,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:56:32,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,773 INFO L138 Inliner]: procedures = 615, calls = 250, calls flagged for inlining = 25, calls inlined = 23, statements flattened = 738 [2023-11-26 11:56:32,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:56:32,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:56:32,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:56:32,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:56:32,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,846 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-26 11:56:32,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,878 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,885 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:56:32,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:56:32,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:56:32,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:56:32,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (1/1) ... [2023-11-26 11:56:32,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:56:32,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:32,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:56:32,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:56:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure execvp [2023-11-26 11:56:33,003 INFO L138 BoogieDeclarations]: Found implementation of procedure execvp [2023-11-26 11:56:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-26 11:56:33,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:56:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-26 11:56:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-26 11:56:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 11:56:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:56:33,004 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-26 11:56:33,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:56:33,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 11:56:33,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:56:33,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:56:33,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-26 11:56:33,006 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-26 11:56:33,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-26 11:56:33,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-26 11:56:33,006 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-26 11:56:33,007 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-26 11:56:33,007 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:56:33,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:56:33,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:56:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 11:56:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-26 11:56:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 11:56:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 11:56:33,437 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:56:33,443 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:56:34,310 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:56:34,396 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:56:34,399 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-26 11:56:34,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:34 BoogieIcfgContainer [2023-11-26 11:56:34,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:56:34,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:56:34,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:56:34,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:56:34,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:56:30" (1/3) ... [2023-11-26 11:56:34,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b53c596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:34, skipping insertion in model container [2023-11-26 11:56:34,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:56:32" (2/3) ... [2023-11-26 11:56:34,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b53c596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:34, skipping insertion in model container [2023-11-26 11:56:34,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:34" (3/3) ... [2023-11-26 11:56:34,412 INFO L112 eAbstractionObserver]: Analyzing ICFG chroot-incomplete-1.i [2023-11-26 11:56:34,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:56:34,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-26 11:56:34,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:56:34,515 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=PETRI_NET, 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;@3be07647, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:56:34,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-26 11:56:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 145 states have (on average 1.6896551724137931) internal successors, (245), 187 states have internal predecessors, (245), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-26 11:56:34,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:56:34,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:34,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:56:34,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:34,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash 582261, now seen corresponding path program 1 times [2023-11-26 11:56:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:34,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423625700] [2023-11-26 11:56:34,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:34,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:35,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:35,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423625700] [2023-11-26 11:56:35,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423625700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:35,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:35,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:56:35,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371581730] [2023-11-26 11:56:35,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:35,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:35,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:35,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:35,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:35,201 INFO L87 Difference]: Start difference. First operand has 207 states, 145 states have (on average 1.6896551724137931) internal successors, (245), 187 states have internal predecessors, (245), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) 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) [2023-11-26 11:56:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:35,497 INFO L93 Difference]: Finished difference Result 409 states and 558 transitions. [2023-11-26 11:56:35,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:35,502 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 [2023-11-26 11:56:35,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:35,513 INFO L225 Difference]: With dead ends: 409 [2023-11-26 11:56:35,514 INFO L226 Difference]: Without dead ends: 196 [2023-11-26 11:56:35,522 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 [2023-11-26 11:56:35,526 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 1 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:35,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 474 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:56:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-26 11:56:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-11-26 11:56:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 136 states have (on average 1.5735294117647058) internal successors, (214), 179 states have internal predecessors, (214), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 241 transitions. [2023-11-26 11:56:35,592 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 241 transitions. Word has length 3 [2023-11-26 11:56:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:35,593 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 241 transitions. [2023-11-26 11:56:35,593 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) [2023-11-26 11:56:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 241 transitions. [2023-11-26 11:56:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:56:35,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:35,594 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:56:35,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:56:35,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:35,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:35,596 INFO L85 PathProgramCache]: Analyzing trace with hash 166627576, now seen corresponding path program 1 times [2023-11-26 11:56:35,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:35,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241637235] [2023-11-26 11:56:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:35,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:35,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:35,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241637235] [2023-11-26 11:56:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241637235] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992744080] [2023-11-26 11:56:35,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:35,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:35,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:35,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:35,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:56:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:36,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:56:36,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:36,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:36,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992744080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:36,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:56:36,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-26 11:56:36,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054415006] [2023-11-26 11:56:36,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:36,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:56:36,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:36,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:56:36,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:56:36,146 INFO L87 Difference]: Start difference. First operand 196 states and 241 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) [2023-11-26 11:56:36,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:36,376 INFO L93 Difference]: Finished difference Result 196 states and 241 transitions. [2023-11-26 11:56:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:56:36,378 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 [2023-11-26 11:56:36,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:36,385 INFO L225 Difference]: With dead ends: 196 [2023-11-26 11:56:36,386 INFO L226 Difference]: Without dead ends: 195 [2023-11-26 11:56:36,387 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 [2023-11-26 11:56:36,391 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 5 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:36,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 439 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:56:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-26 11:56:36,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2023-11-26 11:56:36,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 178 states have internal predecessors, (213), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 240 transitions. [2023-11-26 11:56:36,421 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 240 transitions. Word has length 6 [2023-11-26 11:56:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:36,421 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 240 transitions. [2023-11-26 11:56:36,421 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) [2023-11-26 11:56:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 240 transitions. [2023-11-26 11:56:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:56:36,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:36,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:56:36,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:36,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:36,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:36,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:36,638 INFO L85 PathProgramCache]: Analyzing trace with hash 870487922, now seen corresponding path program 1 times [2023-11-26 11:56:36,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:36,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783672181] [2023-11-26 11:56:36,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:36,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:56:36,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:36,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783672181] [2023-11-26 11:56:36,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783672181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:36,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:36,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:36,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547064613] [2023-11-26 11:56:36,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:36,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:36,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:36,794 INFO L87 Difference]: Start difference. First operand 195 states and 240 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) [2023-11-26 11:56:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:36,951 INFO L93 Difference]: Finished difference Result 195 states and 240 transitions. [2023-11-26 11:56:36,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:36,952 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 [2023-11-26 11:56:36,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:36,954 INFO L225 Difference]: With dead ends: 195 [2023-11-26 11:56:36,954 INFO L226 Difference]: Without dead ends: 194 [2023-11-26 11:56:36,954 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 [2023-11-26 11:56:36,961 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:36,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 440 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:56:36,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-26 11:56:36,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2023-11-26 11:56:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 134 states have (on average 1.5671641791044777) internal successors, (210), 175 states have internal predecessors, (210), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 237 transitions. [2023-11-26 11:56:36,984 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 237 transitions. Word has length 7 [2023-11-26 11:56:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:36,985 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 237 transitions. [2023-11-26 11:56:36,985 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) [2023-11-26 11:56:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 237 transitions. [2023-11-26 11:56:36,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 11:56:36,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:36,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:36,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:56:36,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:36,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:36,987 INFO L85 PathProgramCache]: Analyzing trace with hash 585703680, now seen corresponding path program 1 times [2023-11-26 11:56:36,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:36,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739738616] [2023-11-26 11:56:36,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:36,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:37,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:56:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:37,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:37,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739738616] [2023-11-26 11:56:37,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739738616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:37,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774248842] [2023-11-26 11:56:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:37,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:37,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:37,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:37,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:56:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:37,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:56:37,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:56:37,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:37,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774248842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:37,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:56:37,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-26 11:56:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028783406] [2023-11-26 11:56:37,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:37,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:37,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:37,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:56:37,424 INFO L87 Difference]: Start difference. First operand 192 states and 237 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-26 11:56:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:37,652 INFO L93 Difference]: Finished difference Result 192 states and 237 transitions. [2023-11-26 11:56:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:37,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2023-11-26 11:56:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:37,655 INFO L225 Difference]: With dead ends: 192 [2023-11-26 11:56:37,655 INFO L226 Difference]: Without dead ends: 190 [2023-11-26 11:56:37,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:56:37,656 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 69 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:37,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 364 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:56:37,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-26 11:56:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-11-26 11:56:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 134 states have (on average 1.5522388059701493) internal successors, (208), 173 states have internal predecessors, (208), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 235 transitions. [2023-11-26 11:56:37,675 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 235 transitions. Word has length 12 [2023-11-26 11:56:37,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:37,677 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 235 transitions. [2023-11-26 11:56:37,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-26 11:56:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 235 transitions. [2023-11-26 11:56:37,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 11:56:37,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:37,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:37,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 11:56:37,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:37,886 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:37,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:37,886 INFO L85 PathProgramCache]: Analyzing trace with hash 976945267, now seen corresponding path program 1 times [2023-11-26 11:56:37,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:37,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278380398] [2023-11-26 11:56:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:37,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:38,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 11:56:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:38,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:38,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278380398] [2023-11-26 11:56:38,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278380398] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:38,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353502982] [2023-11-26 11:56:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:38,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:38,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:38,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:38,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:56:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:38,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:56:38,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:38,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:38,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353502982] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:38,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:56:38,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-26 11:56:38,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780421904] [2023-11-26 11:56:38,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:38,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:56:38,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:56:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:56:38,414 INFO L87 Difference]: Start difference. First operand 190 states and 235 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:38,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:38,894 INFO L93 Difference]: Finished difference Result 384 states and 476 transitions. [2023-11-26 11:56:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:56:38,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-11-26 11:56:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:38,897 INFO L225 Difference]: With dead ends: 384 [2023-11-26 11:56:38,897 INFO L226 Difference]: Without dead ends: 199 [2023-11-26 11:56:38,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:56:38,900 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 4 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:38,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 870 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:56:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-26 11:56:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2023-11-26 11:56:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 143 states have (on average 1.5174825174825175) internal successors, (217), 182 states have internal predecessors, (217), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 244 transitions. [2023-11-26 11:56:38,915 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 244 transitions. Word has length 13 [2023-11-26 11:56:38,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:38,916 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 244 transitions. [2023-11-26 11:56:38,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:38,916 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 244 transitions. [2023-11-26 11:56:38,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 11:56:38,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:38,917 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:38,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:39,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:39,125 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:39,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:39,126 INFO L85 PathProgramCache]: Analyzing trace with hash -888330730, now seen corresponding path program 2 times [2023-11-26 11:56:39,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:39,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188381579] [2023-11-26 11:56:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:39,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:56:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:56:39,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:39,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188381579] [2023-11-26 11:56:39,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188381579] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:39,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245354053] [2023-11-26 11:56:39,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:56:39,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:39,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:39,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:39,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:56:39,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:56:39,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:56:39,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:56:39,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:56:39,773 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:39,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245354053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:39,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:56:39,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-26 11:56:39,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90543179] [2023-11-26 11:56:39,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:39,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:56:39,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:56:39,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:56:39,776 INFO L87 Difference]: Start difference. First operand 199 states and 244 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-26 11:56:40,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:40,279 INFO L93 Difference]: Finished difference Result 199 states and 244 transitions. [2023-11-26 11:56:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:56:40,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 22 [2023-11-26 11:56:40,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:40,283 INFO L225 Difference]: With dead ends: 199 [2023-11-26 11:56:40,283 INFO L226 Difference]: Without dead ends: 197 [2023-11-26 11:56:40,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:56:40,285 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 68 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:40,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 747 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:56:40,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-26 11:56:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2023-11-26 11:56:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 143 states have (on average 1.5034965034965035) internal successors, (215), 180 states have internal predecessors, (215), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 242 transitions. [2023-11-26 11:56:40,317 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 242 transitions. Word has length 22 [2023-11-26 11:56:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:40,318 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 242 transitions. [2023-11-26 11:56:40,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-26 11:56:40,318 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 242 transitions. [2023-11-26 11:56:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 11:56:40,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:40,319 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:40,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:40,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:56:40,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:40,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash 670940266, now seen corresponding path program 1 times [2023-11-26 11:56:40,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:40,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216582001] [2023-11-26 11:56:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:40,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:56:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:56:40,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:40,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216582001] [2023-11-26 11:56:40,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216582001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:40,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:40,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:40,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648791665] [2023-11-26 11:56:40,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:40,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:40,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:40,748 INFO L87 Difference]: Start difference. First operand 197 states and 242 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2023-11-26 11:56:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:40,973 INFO L93 Difference]: Finished difference Result 377 states and 468 transitions. [2023-11-26 11:56:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:40,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 27 [2023-11-26 11:56:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:40,976 INFO L225 Difference]: With dead ends: 377 [2023-11-26 11:56:40,976 INFO L226 Difference]: Without dead ends: 200 [2023-11-26 11:56:40,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:40,978 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:40,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 429 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:56:40,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-26 11:56:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2023-11-26 11:56:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 146 states have (on average 1.4931506849315068) internal successors, (218), 183 states have internal predecessors, (218), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 245 transitions. [2023-11-26 11:56:40,990 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 245 transitions. Word has length 27 [2023-11-26 11:56:40,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:40,991 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 245 transitions. [2023-11-26 11:56:40,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2023-11-26 11:56:40,991 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 245 transitions. [2023-11-26 11:56:40,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 11:56:40,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:40,992 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:40,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:56:40,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:40,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:40,993 INFO L85 PathProgramCache]: Analyzing trace with hash -795938107, now seen corresponding path program 1 times [2023-11-26 11:56:40,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:40,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082946396] [2023-11-26 11:56:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:40,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:41,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:56:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 11:56:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:41,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082946396] [2023-11-26 11:56:41,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082946396] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68617135] [2023-11-26 11:56:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:41,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:41,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:41,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:41,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:56:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:41,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:56:41,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:56:41,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:56:41,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68617135] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:41,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:56:41,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-11-26 11:56:41,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266353214] [2023-11-26 11:56:41,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:41,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:56:41,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:41,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:56:41,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:56:41,739 INFO L87 Difference]: Start difference. First operand 200 states and 245 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:56:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:42,336 INFO L93 Difference]: Finished difference Result 403 states and 499 transitions. [2023-11-26 11:56:42,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:56:42,337 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-26 11:56:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:42,339 INFO L225 Difference]: With dead ends: 403 [2023-11-26 11:56:42,339 INFO L226 Difference]: Without dead ends: 217 [2023-11-26 11:56:42,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:56:42,341 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 7 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:42,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1256 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:56:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-26 11:56:42,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2023-11-26 11:56:42,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 164 states have (on average 1.4329268292682926) internal successors, (235), 200 states have internal predecessors, (235), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 262 transitions. [2023-11-26 11:56:42,354 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 262 transitions. Word has length 30 [2023-11-26 11:56:42,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:42,354 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 262 transitions. [2023-11-26 11:56:42,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:56:42,354 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 262 transitions. [2023-11-26 11:56:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 11:56:42,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:42,356 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:42,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:42,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:42,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:42,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2122851661, now seen corresponding path program 1 times [2023-11-26 11:56:42,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:42,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814006045] [2023-11-26 11:56:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:42,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:42,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:56:42,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:42,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814006045] [2023-11-26 11:56:42,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814006045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:42,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:42,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:42,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994348832] [2023-11-26 11:56:42,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:42,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:42,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:42,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:42,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:42,747 INFO L87 Difference]: Start difference. First operand 217 states and 262 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-26 11:56:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:43,050 INFO L93 Difference]: Finished difference Result 222 states and 267 transitions. [2023-11-26 11:56:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:43,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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 48 [2023-11-26 11:56:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:43,053 INFO L225 Difference]: With dead ends: 222 [2023-11-26 11:56:43,053 INFO L226 Difference]: Without dead ends: 220 [2023-11-26 11:56:43,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:43,054 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:43,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 429 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:56:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-26 11:56:43,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2023-11-26 11:56:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 167 states have (on average 1.4251497005988023) internal successors, (238), 203 states have internal predecessors, (238), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 265 transitions. [2023-11-26 11:56:43,066 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 265 transitions. Word has length 48 [2023-11-26 11:56:43,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:43,067 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 265 transitions. [2023-11-26 11:56:43,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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) [2023-11-26 11:56:43,067 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 265 transitions. [2023-11-26 11:56:43,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:56:43,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:43,069 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:43,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:56:43,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:43,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1672155130, now seen corresponding path program 1 times [2023-11-26 11:56:43,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:43,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674701696] [2023-11-26 11:56:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:43,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 11:56:43,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:43,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674701696] [2023-11-26 11:56:43,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674701696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:43,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:43,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:43,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654498976] [2023-11-26 11:56:43,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:43,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:43,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:43,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:43,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:43,329 INFO L87 Difference]: Start difference. First operand 220 states and 265 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-26 11:56:43,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:43,586 INFO L93 Difference]: Finished difference Result 234 states and 281 transitions. [2023-11-26 11:56:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:43,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 49 [2023-11-26 11:56:43,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:43,589 INFO L225 Difference]: With dead ends: 234 [2023-11-26 11:56:43,589 INFO L226 Difference]: Without dead ends: 232 [2023-11-26 11:56:43,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:43,590 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 3 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:43,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 424 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:56:43,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-26 11:56:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2023-11-26 11:56:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 177 states have (on average 1.4180790960451977) internal successors, (251), 213 states have internal predecessors, (251), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 278 transitions. [2023-11-26 11:56:43,604 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 278 transitions. Word has length 49 [2023-11-26 11:56:43,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:43,604 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 278 transitions. [2023-11-26 11:56:43,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-26 11:56:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 278 transitions. [2023-11-26 11:56:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:56:43,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:43,606 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:43,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:56:43,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:43,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:43,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1672153401, now seen corresponding path program 1 times [2023-11-26 11:56:43,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:43,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180701018] [2023-11-26 11:56:43,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:43,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:43,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 11:56:43,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:43,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180701018] [2023-11-26 11:56:43,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180701018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:43,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:43,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:43,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013378796] [2023-11-26 11:56:43,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:43,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:43,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:43,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:43,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:43,805 INFO L87 Difference]: Start difference. First operand 230 states and 278 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-26 11:56:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:44,086 INFO L93 Difference]: Finished difference Result 230 states and 278 transitions. [2023-11-26 11:56:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 49 [2023-11-26 11:56:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:44,089 INFO L225 Difference]: With dead ends: 230 [2023-11-26 11:56:44,089 INFO L226 Difference]: Without dead ends: 229 [2023-11-26 11:56:44,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:44,090 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:44,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 427 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:56:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-26 11:56:44,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2023-11-26 11:56:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 173 states have (on average 1.416184971098266) internal successors, (245), 208 states have internal predecessors, (245), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 272 transitions. [2023-11-26 11:56:44,107 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 272 transitions. Word has length 49 [2023-11-26 11:56:44,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:44,108 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 272 transitions. [2023-11-26 11:56:44,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-26 11:56:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 272 transitions. [2023-11-26 11:56:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 11:56:44,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:44,110 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:44,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:56:44,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:44,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:44,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1519061707, now seen corresponding path program 1 times [2023-11-26 11:56:44,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:44,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552040871] [2023-11-26 11:56:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:44,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:44,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:56:44,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:44,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552040871] [2023-11-26 11:56:44,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552040871] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:44,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531014644] [2023-11-26 11:56:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:44,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:44,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:44,361 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:44,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:56:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:44,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:56:44,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 11:56:44,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:44,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531014644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:44,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:56:44,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-11-26 11:56:44,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133691956] [2023-11-26 11:56:44,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:44,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:56:44,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:44,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:56:44,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:56:44,748 INFO L87 Difference]: Start difference. First operand 225 states and 272 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2023-11-26 11:56:45,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:45,424 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2023-11-26 11:56:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:56:45,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 51 [2023-11-26 11:56:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:45,427 INFO L225 Difference]: With dead ends: 271 [2023-11-26 11:56:45,427 INFO L226 Difference]: Without dead ends: 262 [2023-11-26 11:56:45,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:56:45,429 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 50 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:45,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 837 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:56:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-26 11:56:45,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 227. [2023-11-26 11:56:45,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 175 states have (on average 1.4114285714285715) internal successors, (247), 210 states have internal predecessors, (247), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 274 transitions. [2023-11-26 11:56:45,443 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 274 transitions. Word has length 51 [2023-11-26 11:56:45,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:45,443 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 274 transitions. [2023-11-26 11:56:45,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2023-11-26 11:56:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 274 transitions. [2023-11-26 11:56:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:56:45,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:45,445 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:45,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 11:56:45,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:56:45,654 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:45,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:45,654 INFO L85 PathProgramCache]: Analyzing trace with hash -682680913, now seen corresponding path program 1 times [2023-11-26 11:56:45,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:45,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158700314] [2023-11-26 11:56:45,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:45,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:45,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 11:56:45,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:45,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158700314] [2023-11-26 11:56:45,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158700314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994691899] [2023-11-26 11:56:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:45,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:45,987 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:46,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:56:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:46,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:56:46,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 11:56:46,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 11:56:46,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994691899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:46,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:56:46,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 11:56:46,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237466513] [2023-11-26 11:56:46,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:46,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:56:46,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:46,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:56:46,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:56:46,459 INFO L87 Difference]: Start difference. First operand 227 states and 274 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2023-11-26 11:56:46,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:46,925 INFO L93 Difference]: Finished difference Result 427 states and 523 transitions. [2023-11-26 11:56:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:56:46,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 57 [2023-11-26 11:56:46,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:46,928 INFO L225 Difference]: With dead ends: 427 [2023-11-26 11:56:46,928 INFO L226 Difference]: Without dead ends: 245 [2023-11-26 11:56:46,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:56:46,930 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 4 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:46,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 639 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:56:46,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-26 11:56:46,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-11-26 11:56:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 193 states have (on average 1.3730569948186528) internal successors, (265), 228 states have internal predecessors, (265), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:46,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 292 transitions. [2023-11-26 11:56:46,946 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 292 transitions. Word has length 57 [2023-11-26 11:56:46,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:46,947 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 292 transitions. [2023-11-26 11:56:46,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2023-11-26 11:56:46,947 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 292 transitions. [2023-11-26 11:56:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:56:46,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:46,949 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:46,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-26 11:56:47,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:56:47,157 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:47,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:47,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1295133698, now seen corresponding path program 1 times [2023-11-26 11:56:47,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:47,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088985628] [2023-11-26 11:56:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:47,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:47,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:56:47,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:47,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088985628] [2023-11-26 11:56:47,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088985628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:47,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:47,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:47,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615783268] [2023-11-26 11:56:47,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:47,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:47,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:47,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:47,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:47,366 INFO L87 Difference]: Start difference. First operand 245 states and 292 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:56:47,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:47,594 INFO L93 Difference]: Finished difference Result 257 states and 307 transitions. [2023-11-26 11:56:47,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:47,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-11-26 11:56:47,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:47,599 INFO L225 Difference]: With dead ends: 257 [2023-11-26 11:56:47,599 INFO L226 Difference]: Without dead ends: 255 [2023-11-26 11:56:47,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:47,600 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 6 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:47,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 432 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:56:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-26 11:56:47,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2023-11-26 11:56:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 197 states have (on average 1.3705583756345177) internal successors, (270), 232 states have internal predecessors, (270), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 297 transitions. [2023-11-26 11:56:47,614 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 297 transitions. Word has length 61 [2023-11-26 11:56:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:47,615 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 297 transitions. [2023-11-26 11:56:47,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:56:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 297 transitions. [2023-11-26 11:56:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:56:47,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:47,617 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:47,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:56:47,617 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:47,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:47,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1765834412, now seen corresponding path program 1 times [2023-11-26 11:56:47,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:47,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857118212] [2023-11-26 11:56:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:47,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:56:47,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:47,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857118212] [2023-11-26 11:56:47,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857118212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:47,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:47,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:56:47,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302404035] [2023-11-26 11:56:47,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:47,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:56:47,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:47,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:56:47,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:56:47,903 INFO L87 Difference]: Start difference. First operand 249 states and 297 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:56:48,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:48,385 INFO L93 Difference]: Finished difference Result 391 states and 476 transitions. [2023-11-26 11:56:48,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:56:48,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-11-26 11:56:48,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:48,388 INFO L225 Difference]: With dead ends: 391 [2023-11-26 11:56:48,389 INFO L226 Difference]: Without dead ends: 280 [2023-11-26 11:56:48,389 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 [2023-11-26 11:56:48,390 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 52 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:48,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 636 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:56:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-26 11:56:48,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 251. [2023-11-26 11:56:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 199 states have (on average 1.3668341708542713) internal successors, (272), 234 states have internal predecessors, (272), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 299 transitions. [2023-11-26 11:56:48,409 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 299 transitions. Word has length 62 [2023-11-26 11:56:48,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:48,410 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 299 transitions. [2023-11-26 11:56:48,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:56:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 299 transitions. [2023-11-26 11:56:48,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 11:56:48,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:48,412 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:48,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:56:48,413 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:48,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:48,413 INFO L85 PathProgramCache]: Analyzing trace with hash 800860631, now seen corresponding path program 1 times [2023-11-26 11:56:48,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:48,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104327692] [2023-11-26 11:56:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:48,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:48,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:56:48,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:48,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104327692] [2023-11-26 11:56:48,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104327692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:48,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277363680] [2023-11-26 11:56:48,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:48,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:48,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:48,668 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:48,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:56:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:49,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:56:49,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:56:49,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:49,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277363680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:49,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:56:49,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-26 11:56:49,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026089082] [2023-11-26 11:56:49,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:49,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:56:49,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:49,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:56:49,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:56:49,107 INFO L87 Difference]: Start difference. First operand 251 states and 299 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:56:49,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:49,286 INFO L93 Difference]: Finished difference Result 257 states and 307 transitions. [2023-11-26 11:56:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:56:49,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2023-11-26 11:56:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:49,289 INFO L225 Difference]: With dead ends: 257 [2023-11-26 11:56:49,289 INFO L226 Difference]: Without dead ends: 256 [2023-11-26 11:56:49,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:56:49,290 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 15 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:49,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 432 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:56:49,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-26 11:56:49,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 250. [2023-11-26 11:56:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 199 states have (on average 1.3618090452261307) internal successors, (271), 233 states have internal predecessors, (271), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 298 transitions. [2023-11-26 11:56:49,305 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 298 transitions. Word has length 65 [2023-11-26 11:56:49,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:49,305 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 298 transitions. [2023-11-26 11:56:49,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:56:49,306 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 298 transitions. [2023-11-26 11:56:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 11:56:49,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:49,307 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:49,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:49,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:56:49,512 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:49,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:49,513 INFO L85 PathProgramCache]: Analyzing trace with hash -943124171, now seen corresponding path program 1 times [2023-11-26 11:56:49,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:49,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259681978] [2023-11-26 11:56:49,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:49,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:49,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:56:49,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:49,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259681978] [2023-11-26 11:56:49,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259681978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:49,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399301665] [2023-11-26 11:56:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:49,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:49,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:49,760 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:49,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:56:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:50,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:56:50,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:56:50,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:56:50,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399301665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:50,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:56:50,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-26 11:56:50,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114774723] [2023-11-26 11:56:50,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:50,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:56:50,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:50,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:56:50,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:56:50,205 INFO L87 Difference]: Start difference. First operand 250 states and 298 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:56:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:50,411 INFO L93 Difference]: Finished difference Result 287 states and 348 transitions. [2023-11-26 11:56:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:56:50,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2023-11-26 11:56:50,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:50,415 INFO L225 Difference]: With dead ends: 287 [2023-11-26 11:56:50,415 INFO L226 Difference]: Without dead ends: 286 [2023-11-26 11:56:50,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:56:50,416 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 36 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:50,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 456 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:56:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-26 11:56:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 262. [2023-11-26 11:56:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 211 states have (on average 1.3554502369668247) internal successors, (286), 245 states have internal predecessors, (286), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:50,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 313 transitions. [2023-11-26 11:56:50,435 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 313 transitions. Word has length 66 [2023-11-26 11:56:50,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:50,435 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 313 transitions. [2023-11-26 11:56:50,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:56:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 313 transitions. [2023-11-26 11:56:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 11:56:50,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:50,437 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:50,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-26 11:56:50,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:56:50,645 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:50,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:50,645 INFO L85 PathProgramCache]: Analyzing trace with hash -970472002, now seen corresponding path program 1 times [2023-11-26 11:56:50,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:50,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139757614] [2023-11-26 11:56:50,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:50,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:56:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139757614] [2023-11-26 11:56:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139757614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:50,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:50,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:56:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490858540] [2023-11-26 11:56:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:50,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:56:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:56:50,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:56:50,887 INFO L87 Difference]: Start difference. First operand 262 states and 313 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:56:51,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:51,284 INFO L93 Difference]: Finished difference Result 397 states and 482 transitions. [2023-11-26 11:56:51,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:56:51,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2023-11-26 11:56:51,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:51,288 INFO L225 Difference]: With dead ends: 397 [2023-11-26 11:56:51,288 INFO L226 Difference]: Without dead ends: 286 [2023-11-26 11:56:51,289 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 [2023-11-26 11:56:51,290 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 31 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:51,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 641 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:56:51,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-26 11:56:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 264. [2023-11-26 11:56:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 213 states have (on average 1.352112676056338) internal successors, (288), 247 states have internal predecessors, (288), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 315 transitions. [2023-11-26 11:56:51,305 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 315 transitions. Word has length 66 [2023-11-26 11:56:51,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:51,305 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 315 transitions. [2023-11-26 11:56:51,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:56:51,306 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 315 transitions. [2023-11-26 11:56:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:56:51,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:51,307 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:51,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:56:51,307 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:51,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1996756482, now seen corresponding path program 1 times [2023-11-26 11:56:51,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:51,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945469646] [2023-11-26 11:56:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:51,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:51,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:51,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:56:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:56:51,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:51,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945469646] [2023-11-26 11:56:51,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945469646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:51,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:51,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:56:51,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348210476] [2023-11-26 11:56:51,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:51,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:56:51,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:51,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:56:51,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:56:51,751 INFO L87 Difference]: Start difference. First operand 264 states and 315 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:51,929 INFO L93 Difference]: Finished difference Result 365 states and 433 transitions. [2023-11-26 11:56:51,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:56:51,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2023-11-26 11:56:51,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:51,932 INFO L225 Difference]: With dead ends: 365 [2023-11-26 11:56:51,932 INFO L226 Difference]: Without dead ends: 267 [2023-11-26 11:56:51,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:56:51,933 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 211 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:51,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 422 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:56:51,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-26 11:56:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2023-11-26 11:56:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 215 states have (on average 1.3488372093023255) internal successors, (290), 249 states have internal predecessors, (290), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:51,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 317 transitions. [2023-11-26 11:56:51,950 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 317 transitions. Word has length 68 [2023-11-26 11:56:51,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:51,951 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 317 transitions. [2023-11-26 11:56:51,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:51,951 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 317 transitions. [2023-11-26 11:56:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 11:56:51,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:51,953 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:51,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:56:51,954 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:51,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1294644784, now seen corresponding path program 1 times [2023-11-26 11:56:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:51,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463371092] [2023-11-26 11:56:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:51,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:52,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:56:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:56:52,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:52,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463371092] [2023-11-26 11:56:52,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463371092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:52,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:52,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:52,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107560060] [2023-11-26 11:56:52,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:52,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:56:52,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:56:52,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:52,211 INFO L87 Difference]: Start difference. First operand 266 states and 317 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:52,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:52,592 INFO L93 Difference]: Finished difference Result 275 states and 329 transitions. [2023-11-26 11:56:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:56:52,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2023-11-26 11:56:52,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:52,595 INFO L225 Difference]: With dead ends: 275 [2023-11-26 11:56:52,595 INFO L226 Difference]: Without dead ends: 273 [2023-11-26 11:56:52,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:56:52,596 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 4 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:52,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 420 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:56:52,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-26 11:56:52,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 270. [2023-11-26 11:56:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 219 states have (on average 1.3515981735159817) internal successors, (296), 253 states have internal predecessors, (296), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 323 transitions. [2023-11-26 11:56:52,613 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 323 transitions. Word has length 69 [2023-11-26 11:56:52,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:52,613 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 323 transitions. [2023-11-26 11:56:52,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 323 transitions. [2023-11-26 11:56:52,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 11:56:52,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:52,615 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:52,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:56:52,616 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:52,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:52,616 INFO L85 PathProgramCache]: Analyzing trace with hash 705878745, now seen corresponding path program 1 times [2023-11-26 11:56:52,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:52,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877293634] [2023-11-26 11:56:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:52,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-26 11:56:52,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877293634] [2023-11-26 11:56:52,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877293634] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:52,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517859855] [2023-11-26 11:56:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:52,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:52,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:52,881 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:52,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:56:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:53,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:56:53,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-26 11:56:53,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-26 11:56:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517859855] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:53,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:56:53,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-26 11:56:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053180369] [2023-11-26 11:56:53,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:53,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:56:53,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:53,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:56:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:56:53,575 INFO L87 Difference]: Start difference. First operand 270 states and 323 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 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) [2023-11-26 11:56:54,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:54,304 INFO L93 Difference]: Finished difference Result 521 states and 636 transitions. [2023-11-26 11:56:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:56:54,305 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 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 68 [2023-11-26 11:56:54,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:54,307 INFO L225 Difference]: With dead ends: 521 [2023-11-26 11:56:54,307 INFO L226 Difference]: Without dead ends: 305 [2023-11-26 11:56:54,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:56:54,309 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 6 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:54,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1037 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:56:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-26 11:56:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-11-26 11:56:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 255 states have (on average 1.2980392156862746) internal successors, (331), 288 states have internal predecessors, (331), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 358 transitions. [2023-11-26 11:56:54,327 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 358 transitions. Word has length 68 [2023-11-26 11:56:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:54,328 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 358 transitions. [2023-11-26 11:56:54,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 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) [2023-11-26 11:56:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 358 transitions. [2023-11-26 11:56:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 11:56:54,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:54,330 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:54,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:54,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:54,538 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:54,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1344894725, now seen corresponding path program 1 times [2023-11-26 11:56:54,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:54,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941100298] [2023-11-26 11:56:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:54,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:54,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:56:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:56:54,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:54,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941100298] [2023-11-26 11:56:54,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941100298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:54,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:54,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:56:54,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779276408] [2023-11-26 11:56:54,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:54,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:56:54,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:54,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:56:54,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:56:54,796 INFO L87 Difference]: Start difference. First operand 305 states and 358 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:55,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:55,142 INFO L93 Difference]: Finished difference Result 394 states and 459 transitions. [2023-11-26 11:56:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:56:55,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 71 [2023-11-26 11:56:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:55,148 INFO L225 Difference]: With dead ends: 394 [2023-11-26 11:56:55,148 INFO L226 Difference]: Without dead ends: 305 [2023-11-26 11:56:55,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:56:55,149 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:55,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 596 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:56:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-26 11:56:55,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-11-26 11:56:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 255 states have (on average 1.2941176470588236) internal successors, (330), 288 states have internal predecessors, (330), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 357 transitions. [2023-11-26 11:56:55,167 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 357 transitions. Word has length 71 [2023-11-26 11:56:55,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:55,168 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 357 transitions. [2023-11-26 11:56:55,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:55,168 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 357 transitions. [2023-11-26 11:56:55,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-26 11:56:55,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:55,170 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:55,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 11:56:55,170 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:55,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:55,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1354781705, now seen corresponding path program 1 times [2023-11-26 11:56:55,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:55,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337254434] [2023-11-26 11:56:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:55,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:55,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:56:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:56:55,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:55,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337254434] [2023-11-26 11:56:55,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337254434] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:55,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826776235] [2023-11-26 11:56:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:55,453 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:55,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:56:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:55,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:56:55,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:56:55,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:55,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826776235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:55,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:56:55,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-26 11:56:55,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424589496] [2023-11-26 11:56:55,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:55,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:56:55,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:55,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:56:55,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:56:55,985 INFO L87 Difference]: Start difference. First operand 305 states and 357 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:56,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:56,252 INFO L93 Difference]: Finished difference Result 309 states and 362 transitions. [2023-11-26 11:56:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:56:56,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2023-11-26 11:56:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:56,255 INFO L225 Difference]: With dead ends: 309 [2023-11-26 11:56:56,255 INFO L226 Difference]: Without dead ends: 308 [2023-11-26 11:56:56,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:56:56,256 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 8 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:56,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 620 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:56:56,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-26 11:56:56,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 304. [2023-11-26 11:56:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 255 states have (on average 1.2901960784313726) internal successors, (329), 287 states have internal predecessors, (329), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 356 transitions. [2023-11-26 11:56:56,273 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 356 transitions. Word has length 73 [2023-11-26 11:56:56,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:56,274 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 356 transitions. [2023-11-26 11:56:56,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 356 transitions. [2023-11-26 11:56:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-26 11:56:56,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:56,275 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:56,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:56,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:56,482 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting bb_perror_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:56,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:56,482 INFO L85 PathProgramCache]: Analyzing trace with hash -951439959, now seen corresponding path program 1 times [2023-11-26 11:56:56,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:56,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932081352] [2023-11-26 11:56:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:56,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:56,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:56:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:56:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932081352] [2023-11-26 11:56:56,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932081352] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:56,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310603138] [2023-11-26 11:56:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:56,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:56,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:56,837 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:56,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:56:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:57,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:56:57,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:56:57,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:56:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:56:57,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310603138] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:56:57,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:56:57,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-26 11:56:57,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827276093] [2023-11-26 11:56:57,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:56:57,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:56:57,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:57,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:56:57,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:56:57,432 INFO L87 Difference]: Start difference. First operand 304 states and 356 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:57,706 INFO L93 Difference]: Finished difference Result 329 states and 393 transitions. [2023-11-26 11:56:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:56:57,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2023-11-26 11:56:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:57,709 INFO L225 Difference]: With dead ends: 329 [2023-11-26 11:56:57,709 INFO L226 Difference]: Without dead ends: 328 [2023-11-26 11:56:57,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:56:57,710 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 19 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:57,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 627 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:56:57,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-26 11:56:57,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 316. [2023-11-26 11:56:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 267 states have (on average 1.299625468164794) internal successors, (347), 299 states have internal predecessors, (347), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 374 transitions. [2023-11-26 11:56:57,728 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 374 transitions. Word has length 74 [2023-11-26 11:56:57,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:57,729 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 374 transitions. [2023-11-26 11:56:57,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:56:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 374 transitions. [2023-11-26 11:56:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-26 11:56:57,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:57,731 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:57,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-26 11:56:57,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:57,939 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:57,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash 83531275, now seen corresponding path program 1 times [2023-11-26 11:56:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:57,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013612548] [2023-11-26 11:56:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:57,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:58,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:56:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:58,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 11:56:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-26 11:56:58,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:58,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013612548] [2023-11-26 11:56:58,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013612548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:58,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:58,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:56:58,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338231180] [2023-11-26 11:56:58,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:58,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:56:58,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:56:58,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:56:58,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:56:58,439 INFO L87 Difference]: Start difference. First operand 316 states and 374 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:56:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:59,036 INFO L93 Difference]: Finished difference Result 317 states and 375 transitions. [2023-11-26 11:56:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:56:59,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2023-11-26 11:56:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:59,039 INFO L225 Difference]: With dead ends: 317 [2023-11-26 11:56:59,039 INFO L226 Difference]: Without dead ends: 315 [2023-11-26 11:56:59,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:56:59,040 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 56 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:59,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 419 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:56:59,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-26 11:56:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 314. [2023-11-26 11:56:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 267 states have (on average 1.2921348314606742) internal successors, (345), 297 states have internal predecessors, (345), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:56:59,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 372 transitions. [2023-11-26 11:56:59,069 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 372 transitions. Word has length 76 [2023-11-26 11:56:59,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:59,069 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 372 transitions. [2023-11-26 11:56:59,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:56:59,070 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 372 transitions. [2023-11-26 11:56:59,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 11:56:59,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:59,072 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:59,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-26 11:56:59,072 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting bb_perror_msg_and_dieErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:56:59,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:59,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1705497602, now seen corresponding path program 1 times [2023-11-26 11:56:59,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:56:59,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804496391] [2023-11-26 11:56:59,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:59,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:56:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:59,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:56:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:59,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:56:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:59,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-26 11:56:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 11:56:59,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:56:59,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804496391] [2023-11-26 11:56:59,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804496391] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:56:59,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9051931] [2023-11-26 11:56:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:59,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:56:59,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:56:59,705 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:56:59,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:57:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:00,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:57:00,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:57:00,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:57:00,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9051931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:57:00,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:57:00,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2023-11-26 11:57:00,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172663055] [2023-11-26 11:57:00,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:57:00,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:00,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:00,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:00,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:57:00,306 INFO L87 Difference]: Start difference. First operand 314 states and 372 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:57:00,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:00,787 INFO L93 Difference]: Finished difference Result 506 states and 615 transitions. [2023-11-26 11:57:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:00,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2023-11-26 11:57:00,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:00,790 INFO L225 Difference]: With dead ends: 506 [2023-11-26 11:57:00,790 INFO L226 Difference]: Without dead ends: 312 [2023-11-26 11:57:00,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:57:00,792 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 69 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:00,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 898 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:57:00,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-26 11:57:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-11-26 11:57:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 265 states have (on average 1.290566037735849) internal successors, (342), 295 states have internal predecessors, (342), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:57:00,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 369 transitions. [2023-11-26 11:57:00,815 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 369 transitions. Word has length 77 [2023-11-26 11:57:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:00,816 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 369 transitions. [2023-11-26 11:57:00,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:57:00,816 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 369 transitions. [2023-11-26 11:57:00,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-26 11:57:00,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:00,817 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:00,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:01,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 11:57:01,031 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:57:01,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:01,032 INFO L85 PathProgramCache]: Analyzing trace with hash 700964038, now seen corresponding path program 1 times [2023-11-26 11:57:01,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:01,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383197006] [2023-11-26 11:57:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:01,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:57:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 11:57:01,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:01,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383197006] [2023-11-26 11:57:01,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383197006] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:01,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766942953] [2023-11-26 11:57:01,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:01,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:01,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:01,325 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:01,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:57:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:01,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:01,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 11:57:01,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 11:57:01,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766942953] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:01,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:57:01,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-26 11:57:01,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798753646] [2023-11-26 11:57:01,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:01,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:57:01,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:01,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:57:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:01,983 INFO L87 Difference]: Start difference. First operand 312 states and 369 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-26 11:57:02,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:02,418 INFO L93 Difference]: Finished difference Result 322 states and 381 transitions. [2023-11-26 11:57:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:02,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 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 87 [2023-11-26 11:57:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:02,421 INFO L225 Difference]: With dead ends: 322 [2023-11-26 11:57:02,421 INFO L226 Difference]: Without dead ends: 321 [2023-11-26 11:57:02,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:57:02,422 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:02,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 830 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:57:02,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-26 11:57:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2023-11-26 11:57:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 274 states have (on average 1.281021897810219) internal successors, (351), 304 states have internal predecessors, (351), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:57:02,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 378 transitions. [2023-11-26 11:57:02,442 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 378 transitions. Word has length 87 [2023-11-26 11:57:02,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:02,442 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 378 transitions. [2023-11-26 11:57:02,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-26 11:57:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 378 transitions. [2023-11-26 11:57:02,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-26 11:57:02,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:02,444 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:02,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:02,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 11:57:02,655 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:57:02,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:02,655 INFO L85 PathProgramCache]: Analyzing trace with hash -67644746, now seen corresponding path program 2 times [2023-11-26 11:57:02,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:02,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742963591] [2023-11-26 11:57:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:02,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:57:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:57:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-26 11:57:03,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:57:03,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742963591] [2023-11-26 11:57:03,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742963591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:57:03,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069491039] [2023-11-26 11:57:03,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:57:03,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:57:03,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:57:03,081 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:57:03,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:57:03,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:57:03,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:57:03,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:57:03,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:57:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-26 11:57:03,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:57:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2023-11-26 11:57:03,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069491039] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:57:03,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:57:03,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-26 11:57:03,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862003773] [2023-11-26 11:57:03,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:57:03,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:57:03,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:57:03,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:57:03,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:57:03,796 INFO L87 Difference]: Start difference. First operand 321 states and 378 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2023-11-26 11:57:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:57:04,030 INFO L93 Difference]: Finished difference Result 321 states and 378 transitions. [2023-11-26 11:57:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:57:04,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 96 [2023-11-26 11:57:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:57:04,033 INFO L225 Difference]: With dead ends: 321 [2023-11-26 11:57:04,033 INFO L226 Difference]: Without dead ends: 304 [2023-11-26 11:57:04,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:57:04,035 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 89 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:57:04,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 548 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:57:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-26 11:57:04,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-11-26 11:57:04,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 258 states have (on average 1.2906976744186047) internal successors, (333), 287 states have internal predecessors, (333), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 11:57:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 360 transitions. [2023-11-26 11:57:04,054 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 360 transitions. Word has length 96 [2023-11-26 11:57:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:57:04,054 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 360 transitions. [2023-11-26 11:57:04,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2023-11-26 11:57:04,055 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 360 transitions. [2023-11-26 11:57:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-26 11:57:04,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:57:04,057 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:57:04,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:57:04,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c715c38-8c68-48ae-ace5-86f310539e24/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 11:57:04,266 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting bb_perror_msg_and_dieErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-26 11:57:04,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:57:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash 79273538, now seen corresponding path program 1 times [2023-11-26 11:57:04,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:57:04,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879592394] [2023-11-26 11:57:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:57:04,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:57:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat