./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/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_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/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 32bit --witnessprinter.graph.data.programhash f78eb3bd6243e56025d38ea44716c81630a57505e69e1c5e81a8ab68f6ac9a28 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:49:41,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:49:42,104 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:49:42,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:49:42,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:49:42,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:49:42,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:49:42,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:49:42,166 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:49:42,172 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:49:42,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:49:42,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:49:42,175 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:49:42,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:49:42,177 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:49:42,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:49:42,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:49:42,179 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:49:42,180 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:49:42,180 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:49:42,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:49:42,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:49:42,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:49:42,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:49:42,183 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:49:42,183 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:49:42,184 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:49:42,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:49:42,185 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:49:42,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:49:42,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:49:42,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:49:42,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:49:42,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:42,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:49:42,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:49:42,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:49:42,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:49:42,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:49:42,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:49:42,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:49:42,191 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:49:42,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:49:42,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:49:42,193 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_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f78eb3bd6243e56025d38ea44716c81630a57505e69e1c5e81a8ab68f6ac9a28 [2023-11-26 11:49:42,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:49:42,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:49:42,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:49:42,599 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:49:42,599 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:49:42,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c [2023-11-26 11:49:46,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:49:46,404 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:49:46,404 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound100.c [2023-11-26 11:49:46,414 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/data/c3e206500/01ffeb36848c46109bc8a866e4c004df/FLAGf7426556d [2023-11-26 11:49:46,442 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/data/c3e206500/01ffeb36848c46109bc8a866e4c004df [2023-11-26 11:49:46,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:49:46,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:49:46,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:46,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:49:46,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:49:46,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4116c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46, skipping insertion in model container [2023-11-26 11:49:46,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,485 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:49:46,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:46,690 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:49:46,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:49:46,730 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:49:46,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46 WrapperNode [2023-11-26 11:49:46,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:49:46,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:46,733 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:49:46,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:49:46,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,782 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-26 11:49:46,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:49:46,784 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:49:46,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:49:46,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:49:46,795 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,797 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,810 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 11:49:46,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,821 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:49:46,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:49:46,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:49:46,827 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:49:46,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (1/1) ... [2023-11-26 11:49:46,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:49:46,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:46,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:49:46,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:49:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:49:46,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:49:46,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:49:46,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:49:46,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:49:46,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:49:47,022 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:49:47,026 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:49:47,341 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:49:47,371 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:49:47,372 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:49:47,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:47 BoogieIcfgContainer [2023-11-26 11:49:47,373 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:49:47,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:49:47,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:49:47,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:49:47,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:49:46" (1/3) ... [2023-11-26 11:49:47,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5d16dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:47, skipping insertion in model container [2023-11-26 11:49:47,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:49:46" (2/3) ... [2023-11-26 11:49:47,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c5d16dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:49:47, skipping insertion in model container [2023-11-26 11:49:47,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:49:47" (3/3) ... [2023-11-26 11:49:47,392 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound100.c [2023-11-26 11:49:47,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:49:47,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-26 11:49:47,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:49:47,467 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;@66d52762, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:49:47,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-26 11:49:47,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.75) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:49:47,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:49:47,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:47,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:49:47,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:49:47,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:47,485 INFO L85 PathProgramCache]: Analyzing trace with hash 88477, now seen corresponding path program 1 times [2023-11-26 11:49:47,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:47,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462843040] [2023-11-26 11:49:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:47,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:47,638 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 11:49:47,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:47,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462843040] [2023-11-26 11:49:47,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462843040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:47,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:47,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:47,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025136411] [2023-11-26 11:49:47,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:47,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:49:47,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:49:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:49:47,681 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.75) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 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 11:49:47,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:47,714 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2023-11-26 11:49:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:49:47,717 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 11:49:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:47,724 INFO L225 Difference]: With dead ends: 53 [2023-11-26 11:49:47,725 INFO L226 Difference]: Without dead ends: 23 [2023-11-26 11:49:47,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:49:47,734 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:47,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:49:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-26 11:49:47,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-26 11:49:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 20 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 11:49:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-26 11:49:47,777 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 3 [2023-11-26 11:49:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:47,778 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-26 11:49:47,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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 11:49:47,779 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-26 11:49:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:49:47,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:47,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:49:47,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:49:47,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:49:47,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash 87676, now seen corresponding path program 1 times [2023-11-26 11:49:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:47,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005453541] [2023-11-26 11:49:47,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:47,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:47,882 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 11:49:47,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:47,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005453541] [2023-11-26 11:49:47,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005453541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:47,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:47,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:47,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328330152] [2023-11-26 11:49:47,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:47,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:49:47,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:47,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:49:47,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:49:47,889 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 11:49:47,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:47,954 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2023-11-26 11:49:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:49:47,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 11:49:47,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:47,956 INFO L225 Difference]: With dead ends: 32 [2023-11-26 11:49:47,956 INFO L226 Difference]: Without dead ends: 27 [2023-11-26 11:49:47,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 11:49:47,959 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:47,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 55 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:49:47,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-26 11:49:47,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-26 11:49:47,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 24 states have internal predecessors, (26), 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 11:49:47,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2023-11-26 11:49:47,970 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 3 [2023-11-26 11:49:47,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:47,970 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2023-11-26 11:49:47,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 11:49:47,971 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2023-11-26 11:49:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:49:47,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:47,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:47,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:49:47,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:49:47,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:47,974 INFO L85 PathProgramCache]: Analyzing trace with hash -632484253, now seen corresponding path program 1 times [2023-11-26 11:49:47,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:47,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291744837] [2023-11-26 11:49:47,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:47,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:47,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:47,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837343644] [2023-11-26 11:49:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:47,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:47,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:47,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:48,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:49:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:49:48,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:48,181 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 11:49:48,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:48,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:48,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291744837] [2023-11-26 11:49:48,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:48,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837343644] [2023-11-26 11:49:48,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837343644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:48,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:48,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:49:48,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635142404] [2023-11-26 11:49:48,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:48,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:48,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:48,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:48,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:48,189 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:48,258 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2023-11-26 11:49:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:48,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-26 11:49:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:48,263 INFO L225 Difference]: With dead ends: 39 [2023-11-26 11:49:48,264 INFO L226 Difference]: Without dead ends: 33 [2023-11-26 11:49:48,264 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 11:49:48,267 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:48,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:49:48,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-26 11:49:48,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-26 11:49:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 29 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:49:48,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2023-11-26 11:49:48,291 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2023-11-26 11:49:48,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:48,292 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2023-11-26 11:49:48,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2023-11-26 11:49:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 11:49:48,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:48,296 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:48,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:49:48,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:48,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:49:48,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:48,504 INFO L85 PathProgramCache]: Analyzing trace with hash -808983809, now seen corresponding path program 1 times [2023-11-26 11:49:48,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:48,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713816827] [2023-11-26 11:49:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:48,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:48,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:48,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432398990] [2023-11-26 11:49:48,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:48,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:48,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:48,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:48,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:49:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:48,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:49:48,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:48,793 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 11:49:48,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:48,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:48,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713816827] [2023-11-26 11:49:48,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432398990] [2023-11-26 11:49:48,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432398990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:48,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:48,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:49:48,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463486794] [2023-11-26 11:49:48,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:48,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:48,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:48,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:48,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:48,807 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:49:48,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:48,926 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2023-11-26 11:49:48,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:49:48,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-26 11:49:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:48,930 INFO L225 Difference]: With dead ends: 33 [2023-11-26 11:49:48,930 INFO L226 Difference]: Without dead ends: 32 [2023-11-26 11:49:48,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:49:48,936 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:48,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 48 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:49:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-26 11:49:48,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-11-26 11:49:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.25) internal successors, (30), 28 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:49:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-11-26 11:49:48,944 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 17 [2023-11-26 11:49:48,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:48,946 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-11-26 11:49:48,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:49:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-11-26 11:49:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-26 11:49:48,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:48,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:48,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 11:49:49,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:49,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:49:49,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:49,153 INFO L85 PathProgramCache]: Analyzing trace with hash 691305738, now seen corresponding path program 1 times [2023-11-26 11:49:49,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:49,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120697017] [2023-11-26 11:49:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:49,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:49,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:49,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937800903] [2023-11-26 11:49:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:49,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:49,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:49,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:49,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:49:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:49,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:49:49,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:49,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:49,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:49,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120697017] [2023-11-26 11:49:49,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:49,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937800903] [2023-11-26 11:49:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937800903] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:49,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:49,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-26 11:49:49,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200553813] [2023-11-26 11:49:49,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:49,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:49:49,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:49:49,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:49:49,503 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:49:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:49,732 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2023-11-26 11:49:49,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:49:49,740 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-26 11:49:49,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:49,747 INFO L225 Difference]: With dead ends: 83 [2023-11-26 11:49:49,748 INFO L226 Difference]: Without dead ends: 79 [2023-11-26 11:49:49,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:49:49,757 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 52 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:49,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 127 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:49:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-26 11:49:49,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2023-11-26 11:49:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 58 states have internal predecessors, (69), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:49:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2023-11-26 11:49:49,771 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 18 [2023-11-26 11:49:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:49,795 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2023-11-26 11:49:49,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:49:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2023-11-26 11:49:49,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-26 11:49:49,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:49,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:49,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:49,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:49,998 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:49:49,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:49,999 INFO L85 PathProgramCache]: Analyzing trace with hash 321102182, now seen corresponding path program 1 times [2023-11-26 11:49:49,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:49,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206009350] [2023-11-26 11:49:50,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:50,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:50,018 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:50,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520638853] [2023-11-26 11:49:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:50,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:50,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:50,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:50,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:49:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:50,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:49:50,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:50,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:50,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:50,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206009350] [2023-11-26 11:49:50,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:50,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520638853] [2023-11-26 11:49:50,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520638853] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:50,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:50,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-26 11:49:50,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118602608] [2023-11-26 11:49:50,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:50,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:49:50,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:50,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:49:50,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:49:50,279 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:49:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:50,386 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2023-11-26 11:49:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:49:50,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-11-26 11:49:50,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:50,388 INFO L225 Difference]: With dead ends: 78 [2023-11-26 11:49:50,388 INFO L226 Difference]: Without dead ends: 68 [2023-11-26 11:49:50,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:49:50,390 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 20 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:50,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 72 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:49:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-26 11:49:50,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-26 11:49:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 59 states have internal predecessors, (60), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:49:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2023-11-26 11:49:50,406 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 21 [2023-11-26 11:49:50,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:50,407 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2023-11-26 11:49:50,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:49:50,408 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2023-11-26 11:49:50,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:49:50,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:50,410 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-11-26 11:49:50,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:50,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:50,618 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:49:50,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1259495391, now seen corresponding path program 2 times [2023-11-26 11:49:50,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:50,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768689679] [2023-11-26 11:49:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:50,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:50,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:50,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385235377] [2023-11-26 11:49:50,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:49:50,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:50,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:50,639 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:50,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:49:50,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:49:50,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:49:50,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:49:50,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:50,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:49:51,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:51,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768689679] [2023-11-26 11:49:51,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:51,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385235377] [2023-11-26 11:49:51,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385235377] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:51,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:51,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2023-11-26 11:49:51,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362198496] [2023-11-26 11:49:51,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:51,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 11:49:51,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:51,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 11:49:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:49:51,253 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 22 states have internal predecessors, (95), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:49:51,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:51,775 INFO L93 Difference]: Finished difference Result 170 states and 175 transitions. [2023-11-26 11:49:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-26 11:49:51,776 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 22 states have internal predecessors, (95), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 60 [2023-11-26 11:49:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:51,780 INFO L225 Difference]: With dead ends: 170 [2023-11-26 11:49:51,780 INFO L226 Difference]: Without dead ends: 166 [2023-11-26 11:49:51,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2023-11-26 11:49:51,783 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 126 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:51,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 157 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:49:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-26 11:49:51,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2023-11-26 11:49:51,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 126 states have (on average 1.0952380952380953) internal successors, (138), 128 states have internal predecessors, (138), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:49:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 158 transitions. [2023-11-26 11:49:51,849 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 158 transitions. Word has length 60 [2023-11-26 11:49:51,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:51,852 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 158 transitions. [2023-11-26 11:49:51,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.523809523809524) internal successors, (95), 22 states have internal predecessors, (95), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:49:51,853 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 158 transitions. [2023-11-26 11:49:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-26 11:49:51,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:51,856 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-11-26 11:49:51,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:52,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:52,057 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:49:52,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash -792849681, now seen corresponding path program 2 times [2023-11-26 11:49:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:52,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116846827] [2023-11-26 11:49:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:52,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:52,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834569782] [2023-11-26 11:49:52,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:49:52,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:52,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:52,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:52,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:49:52,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:49:52,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:49:52,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:49:52,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:49:52,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:49:52,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:52,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116846827] [2023-11-26 11:49:52,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:52,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834569782] [2023-11-26 11:49:52,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834569782] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:52,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:52,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-26 11:49:52,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960845412] [2023-11-26 11:49:52,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:52,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:49:52,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:52,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:49:52,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:49:52,537 INFO L87 Difference]: Start difference. First operand 149 states and 158 transitions. Second operand has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 12 states have internal predecessors, (89), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:49:52,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:52,814 INFO L93 Difference]: Finished difference Result 164 states and 173 transitions. [2023-11-26 11:49:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:49:52,814 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 12 states have internal predecessors, (89), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 63 [2023-11-26 11:49:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:52,817 INFO L225 Difference]: With dead ends: 164 [2023-11-26 11:49:52,817 INFO L226 Difference]: Without dead ends: 152 [2023-11-26 11:49:52,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:49:52,820 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 51 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:52,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 221 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:49:52,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-26 11:49:52,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2023-11-26 11:49:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 129 states have (on average 1.0232558139534884) internal successors, (132), 131 states have internal predecessors, (132), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:49:52,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2023-11-26 11:49:52,856 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 63 [2023-11-26 11:49:52,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:52,857 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2023-11-26 11:49:52,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 12 states have internal predecessors, (89), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-26 11:49:52,858 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2023-11-26 11:49:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-26 11:49:52,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:52,867 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1] [2023-11-26 11:49:52,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:53,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:53,073 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:49:53,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:53,074 INFO L85 PathProgramCache]: Analyzing trace with hash 450588687, now seen corresponding path program 3 times [2023-11-26 11:49:53,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:53,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53483168] [2023-11-26 11:49:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:53,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:53,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:53,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364364229] [2023-11-26 11:49:53,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:49:53,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:53,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:53,107 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:53,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:49:53,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:49:53,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:49:53,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:49:53,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2023-11-26 11:49:53,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:49:53,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53483168] [2023-11-26 11:49:53,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364364229] [2023-11-26 11:49:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364364229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:53,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:53,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:49:53,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388840387] [2023-11-26 11:49:53,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:53,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:49:53,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:53,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:49:53,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:49:53,235 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:49:53,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:53,275 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2023-11-26 11:49:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:49:53,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 144 [2023-11-26 11:49:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:53,278 INFO L225 Difference]: With dead ends: 152 [2023-11-26 11:49:53,278 INFO L226 Difference]: Without dead ends: 151 [2023-11-26 11:49:53,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:49:53,279 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:53,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 39 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:49:53,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-26 11:49:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-26 11:49:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 11:49:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2023-11-26 11:49:53,297 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 144 [2023-11-26 11:49:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:53,297 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2023-11-26 11:49:53,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:49:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2023-11-26 11:49:53,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-26 11:49:53,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:53,300 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1] [2023-11-26 11:49:53,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:53,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-26 11:49:53,507 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:49:53,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1714820161, now seen corresponding path program 3 times [2023-11-26 11:49:53,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:53,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541339531] [2023-11-26 11:49:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:53,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:53,541 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:53,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386831225] [2023-11-26 11:49:53,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:49:53,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:53,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:53,545 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:53,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:49:53,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-26 11:49:53,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:49:53,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 11:49:53,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-26 11:49:54,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-26 11:49:54,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:54,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541339531] [2023-11-26 11:49:54,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:54,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386831225] [2023-11-26 11:49:54,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386831225] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:54,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:54,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-26 11:49:54,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558267212] [2023-11-26 11:49:54,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:54,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-26 11:49:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-26 11:49:54,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-11-26 11:49:54,999 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand has 24 states, 23 states have (on average 8.565217391304348) internal successors, (197), 24 states have internal predecessors, (197), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:49:56,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:56,150 INFO L93 Difference]: Finished difference Result 297 states and 331 transitions. [2023-11-26 11:49:56,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-26 11:49:56,151 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 8.565217391304348) internal successors, (197), 24 states have internal predecessors, (197), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 147 [2023-11-26 11:49:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:56,154 INFO L225 Difference]: With dead ends: 297 [2023-11-26 11:49:56,154 INFO L226 Difference]: Without dead ends: 271 [2023-11-26 11:49:56,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 11:49:56,156 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 174 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:56,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 877 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:49:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-26 11:49:56,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2023-11-26 11:49:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 11:49:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 283 transitions. [2023-11-26 11:49:56,188 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 283 transitions. Word has length 147 [2023-11-26 11:49:56,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:56,188 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 283 transitions. [2023-11-26 11:49:56,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 8.565217391304348) internal successors, (197), 24 states have internal predecessors, (197), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:49:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 283 transitions. [2023-11-26 11:49:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2023-11-26 11:49:56,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:56,195 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1] [2023-11-26 11:49:56,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:56,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:49:56,403 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:49:56,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:56,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1853902821, now seen corresponding path program 4 times [2023-11-26 11:49:56,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:56,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914787717] [2023-11-26 11:49:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:56,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:56,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:49:56,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748030970] [2023-11-26 11:49:56,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 11:49:56,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:56,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:56,459 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:56,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:49:56,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 11:49:56,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:49:56,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-26 11:49:56,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 0 proven. 2442 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-26 11:49:57,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 0 proven. 2442 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-11-26 11:49:59,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914787717] [2023-11-26 11:49:59,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:49:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748030970] [2023-11-26 11:49:59,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748030970] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:59,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:49:59,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-26 11:49:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005660454] [2023-11-26 11:49:59,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:59,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-26 11:49:59,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-26 11:49:59,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-11-26 11:49:59,283 INFO L87 Difference]: Start difference. First operand 271 states and 283 transitions. Second operand has 48 states, 47 states have (on average 8.787234042553191) internal successors, (413), 48 states have internal predecessors, (413), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-26 11:50:03,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:03,851 INFO L93 Difference]: Finished difference Result 561 states and 643 transitions. [2023-11-26 11:50:03,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-26 11:50:03,853 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 8.787234042553191) internal successors, (413), 48 states have internal predecessors, (413), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 315 [2023-11-26 11:50:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:03,857 INFO L225 Difference]: With dead ends: 561 [2023-11-26 11:50:03,857 INFO L226 Difference]: Without dead ends: 511 [2023-11-26 11:50:03,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-11-26 11:50:03,862 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 656 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 2851 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 3455 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:03,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 3455 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2851 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 11:50:03,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-11-26 11:50:03,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2023-11-26 11:50:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 453 states have (on average 1.0044150110375276) internal successors, (455), 454 states have internal predecessors, (455), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-26 11:50:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 547 transitions. [2023-11-26 11:50:03,907 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 547 transitions. Word has length 315 [2023-11-26 11:50:03,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:03,908 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 547 transitions. [2023-11-26 11:50:03,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 8.787234042553191) internal successors, (413), 48 states have internal predecessors, (413), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-26 11:50:03,909 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 547 transitions. [2023-11-26 11:50:03,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2023-11-26 11:50:03,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:03,945 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1] [2023-11-26 11:50:03,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-26 11:50:04,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:04,153 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:50:04,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:04,154 INFO L85 PathProgramCache]: Analyzing trace with hash -515134675, now seen corresponding path program 5 times [2023-11-26 11:50:04,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:04,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872997401] [2023-11-26 11:50:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:04,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:04,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:04,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570454583] [2023-11-26 11:50:04,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 11:50:04,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:04,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:04,217 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:04,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:50:04,737 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-11-26 11:50:04,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:04,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 95 conjunts are in the unsatisfiable core [2023-11-26 11:50:04,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 14766 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-11-26 11:50:06,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 14766 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-11-26 11:50:12,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:12,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872997401] [2023-11-26 11:50:12,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:50:12,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570454583] [2023-11-26 11:50:12,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570454583] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:12,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:50:12,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-11-26 11:50:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679811945] [2023-11-26 11:50:12,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:12,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-26 11:50:12,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:12,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-26 11:50:12,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-11-26 11:50:12,973 INFO L87 Difference]: Start difference. First operand 511 states and 547 transitions. Second operand has 96 states, 95 states have (on average 8.894736842105264) internal successors, (845), 96 states have internal predecessors, (845), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-26 11:50:35,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:35,815 INFO L93 Difference]: Finished difference Result 1089 states and 1267 transitions. [2023-11-26 11:50:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-26 11:50:35,817 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 8.894736842105264) internal successors, (845), 96 states have internal predecessors, (845), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Word has length 651 [2023-11-26 11:50:35,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:35,825 INFO L225 Difference]: With dead ends: 1089 [2023-11-26 11:50:35,826 INFO L226 Difference]: Without dead ends: 991 [2023-11-26 11:50:35,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1206 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-11-26 11:50:35,834 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2477 mSDsluCounter, 13688 mSDsCounter, 0 mSdLazyCounter, 11475 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 14023 SdHoareTripleChecker+Invalid, 11572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 11475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:35,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2479 Valid, 14023 Invalid, 11572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 11475 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-26 11:50:35,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-11-26 11:50:35,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2023-11-26 11:50:35,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 885 states have (on average 1.0022598870056496) internal successors, (887), 886 states have internal predecessors, (887), 94 states have call successors, (94), 10 states have call predecessors, (94), 10 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2023-11-26 11:50:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1075 transitions. [2023-11-26 11:50:35,899 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1075 transitions. Word has length 651 [2023-11-26 11:50:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:35,901 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1075 transitions. [2023-11-26 11:50:35,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 8.894736842105264) internal successors, (845), 96 states have internal predecessors, (845), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-26 11:50:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1075 transitions. [2023-11-26 11:50:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1324 [2023-11-26 11:50:35,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:35,983 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 95, 94, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1] [2023-11-26 11:50:35,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:36,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:36,184 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:50:36,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:36,185 INFO L85 PathProgramCache]: Analyzing trace with hash -600968771, now seen corresponding path program 6 times [2023-11-26 11:50:36,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:36,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392667639] [2023-11-26 11:50:36,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:36,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:36,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:50:36,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788233066] [2023-11-26 11:50:36,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-26 11:50:36,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:36,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:36,272 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:36,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c359f8d0-f668-4c3d-82a1-8560a4ed5ec5/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process