./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/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_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7de1912562331bdeed36a798c63b43e65b83b24670be96e9199704df5bd448b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:45,638 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:45,715 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:55:45,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:45,720 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:45,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:45,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:45,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:45,761 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:45,762 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:45,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:45,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:45,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:45,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:45,765 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:45,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:45,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:55:45,767 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:55:45,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:45,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:55:45,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:45,773 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:55:45,774 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:45,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:55:45,779 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:55:45,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:55:45,780 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:45,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:45,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:45,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:45,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:45,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:45,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:45,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:45,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:55:45,799 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:55:45,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:55:45,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:45,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:45,800 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:55:45,800 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:45,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:45,800 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_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7de1912562331bdeed36a798c63b43e65b83b24670be96e9199704df5bd448b [2023-11-26 11:55:46,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:46,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:46,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:46,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:46,136 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:46,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c [2023-11-26 11:55:49,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:49,588 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:49,589 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c [2023-11-26 11:55:49,601 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/data/7a9fea292/702a2305c789431ab8fc889b24c66f57/FLAGe1e2f5b5c [2023-11-26 11:55:49,619 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/data/7a9fea292/702a2305c789431ab8fc889b24c66f57 [2023-11-26 11:55:49,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:49,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:49,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:49,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:49,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:49,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:49" (1/1) ... [2023-11-26 11:55:49,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65de3dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:49, skipping insertion in model container [2023-11-26 11:55:49,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:49" (1/1) ... [2023-11-26 11:55:49,706 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:49,882 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c[1999,2012] [2023-11-26 11:55:49,889 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c[2368,2381] [2023-11-26 11:55:49,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:49,947 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:55:49,964 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c[1999,2012] [2023-11-26 11:55:49,966 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c[2368,2381] [2023-11-26 11:55:50,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:50,020 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:55:50,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50 WrapperNode [2023-11-26 11:55:50,020 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:50,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:50,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:55:50,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:55:50,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,071 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2023-11-26 11:55:50,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:50,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:55:50,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:55:50,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:55:50,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,089 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,104 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:55:50,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:55:50,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:55:50,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:55:50,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:55:50,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (1/1) ... [2023-11-26 11:55:50,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:50,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:50,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:55:50,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:55:50,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:55:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-26 11:55:50,261 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-26 11:55:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:55:50,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:55:50,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:55:50,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:55:50,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:55:50,386 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:55:50,390 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:55:50,880 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:55:50,924 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:55:50,924 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:55:50,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:50 BoogieIcfgContainer [2023-11-26 11:55:50,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:55:50,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:55:50,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:55:50,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:55:50,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:55:49" (1/3) ... [2023-11-26 11:55:50,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5396f884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:50, skipping insertion in model container [2023-11-26 11:55:50,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:50" (2/3) ... [2023-11-26 11:55:50,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5396f884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:50, skipping insertion in model container [2023-11-26 11:55:50,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:50" (3/3) ... [2023-11-26 11:55:50,941 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_2a.c.cil.c [2023-11-26 11:55:50,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:55:50,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:55:51,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:51,050 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;@3777d04c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:51,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:55:51,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 62 states have (on average 1.6451612903225807) internal successors, (102), 65 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 11:55:51,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:55:51,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:51,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:55:51,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:51,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:51,079 INFO L85 PathProgramCache]: Analyzing trace with hash 257583372, now seen corresponding path program 1 times [2023-11-26 11:55:51,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:51,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477227286] [2023-11-26 11:55:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:51,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:55:51,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:55:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:55:51,225 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:55:51,227 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:55:51,229 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-11-26 11:55:51,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-11-26 11:55:51,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:55:51,237 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 11:55:51,242 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:55:51,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:55:51 BoogieIcfgContainer [2023-11-26 11:55:51,259 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:55:51,260 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:55:51,260 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:55:51,261 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:55:51,261 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:50" (3/4) ... [2023-11-26 11:55:51,264 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:55:51,265 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:55:51,266 INFO L158 Benchmark]: Toolchain (without parser) took 1642.80ms. Allocated memory is still 176.2MB. Free memory was 144.9MB in the beginning and 89.3MB in the end (delta: 55.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2023-11-26 11:55:51,267 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 125.8MB. Free memory was 98.9MB in the beginning and 98.8MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:55:51,268 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.47ms. Allocated memory is still 176.2MB. Free memory was 144.3MB in the beginning and 130.2MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 11:55:51,269 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.82ms. Allocated memory is still 176.2MB. Free memory was 130.2MB in the beginning and 128.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:55:51,270 INFO L158 Benchmark]: Boogie Preprocessor took 79.99ms. Allocated memory is still 176.2MB. Free memory was 128.1MB in the beginning and 125.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:55:51,270 INFO L158 Benchmark]: RCFGBuilder took 773.40ms. Allocated memory is still 176.2MB. Free memory was 125.5MB in the beginning and 103.9MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 11:55:51,271 INFO L158 Benchmark]: TraceAbstraction took 330.50ms. Allocated memory is still 176.2MB. Free memory was 103.4MB in the beginning and 89.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 11:55:51,272 INFO L158 Benchmark]: Witness Printer took 5.09ms. Allocated memory is still 176.2MB. Free memory was 89.8MB in the beginning and 89.3MB in the end (delta: 552.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:55:51,275 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 125.8MB. Free memory was 98.9MB in the beginning and 98.8MB in the end (delta: 132.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.47ms. Allocated memory is still 176.2MB. Free memory was 144.3MB in the beginning and 130.2MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.82ms. Allocated memory is still 176.2MB. Free memory was 130.2MB in the beginning and 128.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.99ms. Allocated memory is still 176.2MB. Free memory was 128.1MB in the beginning and 125.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 773.40ms. Allocated memory is still 176.2MB. Free memory was 125.5MB in the beginning and 103.9MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 330.50ms. Allocated memory is still 176.2MB. Free memory was 103.4MB in the beginning and 89.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.09ms. Allocated memory is still 176.2MB. Free memory was 89.8MB in the beginning and 89.3MB in the end (delta: 552.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.39843f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 72 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-26 11:55:51,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/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_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d7de1912562331bdeed36a798c63b43e65b83b24670be96e9199704df5bd448b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:54,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:54,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 11:55:54,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:54,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:54,206 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:54,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:54,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:54,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:54,214 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:54,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:54,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:54,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:54,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:54,218 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:54,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:54,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:55:54,220 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:55:54,221 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:55:54,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:54,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:55:54,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:54,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:55:54,223 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:55:54,224 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:55:54,224 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:55:54,224 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:55:54,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:55:54,225 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:54,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:54,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:54,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:54,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:54,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:54,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:54,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:54,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:55:54,230 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:55:54,230 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:55:54,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:54,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:54,231 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:55:54,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:54,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:54,232 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:55:54,233 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_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7de1912562331bdeed36a798c63b43e65b83b24670be96e9199704df5bd448b [2023-11-26 11:55:54,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:54,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:54,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:54,664 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:54,671 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:54,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c [2023-11-26 11:55:57,883 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:58,150 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:58,151 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c [2023-11-26 11:55:58,162 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/data/e022deb49/df3eb30ca2984627bd87862f025c6483/FLAG15d1be790 [2023-11-26 11:55:58,177 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/data/e022deb49/df3eb30ca2984627bd87862f025c6483 [2023-11-26 11:55:58,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:58,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:58,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:58,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:58,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:58,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c56e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58, skipping insertion in model container [2023-11-26 11:55:58,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,227 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:58,407 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c[1999,2012] [2023-11-26 11:55:58,414 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c[2368,2381] [2023-11-26 11:55:58,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:58,495 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:55:58,519 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c[1999,2012] [2023-11-26 11:55:58,526 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/sv-benchmarks/c/combinations/square_3+soft_float_2a.c.cil.c[2368,2381] [2023-11-26 11:55:58,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:58,610 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:55:58,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58 WrapperNode [2023-11-26 11:55:58,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:58,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:58,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:55:58,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:55:58,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,688 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2023-11-26 11:55:58,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:58,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:55:58,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:55:58,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:55:58,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,713 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,734 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:55:58,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:55:58,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:55:58,791 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:55:58,791 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:55:58,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (1/1) ... [2023-11-26 11:55:58,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:58,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:58,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:55:58,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:55:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:55:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:55:58,891 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-11-26 11:55:58,892 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-11-26 11:55:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:55:58,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:55:58,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:55:58,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:55:59,025 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:55:59,028 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:56:03,670 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:56:03,697 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:56:03,697 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:56:03,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:03 BoogieIcfgContainer [2023-11-26 11:56:03,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:56:03,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:56:03,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:56:03,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:56:03,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:55:58" (1/3) ... [2023-11-26 11:56:03,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a5b57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:03, skipping insertion in model container [2023-11-26 11:56:03,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:58" (2/3) ... [2023-11-26 11:56:03,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a5b57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:56:03, skipping insertion in model container [2023-11-26 11:56:03,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:56:03" (3/3) ... [2023-11-26 11:56:03,707 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_2a.c.cil.c [2023-11-26 11:56:03,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:56:03,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:56:03,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:56:03,784 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;@2f14b8f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:56:03,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:56:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 48 states have internal predecessors, (73), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 11:56:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:56:03,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:03,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:56:03,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:56:03,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:03,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1797094946, now seen corresponding path program 1 times [2023-11-26 11:56:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:56:03,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389210093] [2023-11-26 11:56:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:03,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:56:03,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:56:03,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:56:03,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 11:56:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:56:04,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:56:04,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:04,543 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 11:56:04,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:56:04,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:56:04,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389210093] [2023-11-26 11:56:04,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389210093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:56:04,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:56:04,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:56:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912775342] [2023-11-26 11:56:04,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:56:04,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:56:04,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:56:04,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:56:04,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:56:04,585 INFO L87 Difference]: Start difference. First operand has 55 states, 45 states have (on average 1.6222222222222222) internal successors, (73), 48 states have internal predecessors, (73), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 11:56:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:04,640 INFO L93 Difference]: Finished difference Result 106 states and 164 transitions. [2023-11-26 11:56:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:56:04,643 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 11:56:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:04,651 INFO L225 Difference]: With dead ends: 106 [2023-11-26 11:56:04,652 INFO L226 Difference]: Without dead ends: 49 [2023-11-26 11:56:04,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:56:04,659 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:04,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:56:04,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-26 11:56:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-26 11:56:04,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 42 states have internal predecessors, (59), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:56:04,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 68 transitions. [2023-11-26 11:56:04,702 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 68 transitions. Word has length 6 [2023-11-26 11:56:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:04,703 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 68 transitions. [2023-11-26 11:56:04,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 11:56:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 68 transitions. [2023-11-26 11:56:04,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:56:04,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:04,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:56:04,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:04,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:56:04,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:56:04,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:04,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1797035364, now seen corresponding path program 1 times [2023-11-26 11:56:04,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:56:04,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075908400] [2023-11-26 11:56:04,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:56:04,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:56:04,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:56:04,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:56:04,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86c8dc35-6610-4024-8ae4-5f6bb7adb5bb/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 11:56:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:56:30,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.