./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/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_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/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_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/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 30672bd579b7f25ffa685cb80d8a419cb542781c19afe0226ba5d9d3cf26984c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:02:33,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:02:33,437 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:02:33,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:02:33,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:02:33,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:02:33,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:02:33,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:02:33,473 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:02:33,473 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:02:33,474 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:02:33,474 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:02:33,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:02:33,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:02:33,477 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:02:33,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:02:33,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:02:33,479 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:02:33,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:02:33,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:02:33,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:02:33,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:02:33,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:02:33,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:02:33,484 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:02:33,484 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:02:33,485 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:02:33,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:02:33,486 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:02:33,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:02:33,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:02:33,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:02:33,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:02:33,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:33,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:02:33,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:02:33,490 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:02:33,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:02:33,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:02:33,492 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:02:33,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:02:33,493 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:02:33,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:02:33,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:02:33,494 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_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30672bd579b7f25ffa685cb80d8a419cb542781c19afe0226ba5d9d3cf26984c [2023-11-26 12:02:33,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:02:33,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:02:33,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:02:33,857 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:02:33,858 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:02:33,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound100.c [2023-11-26 12:02:37,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:02:37,270 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:02:37,270 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound100.c [2023-11-26 12:02:37,279 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/data/e937150e6/7f06fb4ca40f4953ac51e83da1720858/FLAG52e17214f [2023-11-26 12:02:37,293 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/data/e937150e6/7f06fb4ca40f4953ac51e83da1720858 [2023-11-26 12:02:37,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:02:37,298 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:02:37,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:37,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:02:37,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:02:37,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf1cafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37, skipping insertion in model container [2023-11-26 12:02:37,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,334 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:02:37,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:37,557 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:02:37,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:37,632 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:02:37,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37 WrapperNode [2023-11-26 12:02:37,633 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:37,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:37,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:02:37,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:02:37,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,695 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 160 [2023-11-26 12:02:37,696 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:37,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:02:37,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:02:37,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:02:37,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,741 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 12:02:37,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:02:37,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:02:37,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:02:37,769 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:02:37,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (1/1) ... [2023-11-26 12:02:37,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:37,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:37,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:02:37,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:02:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:02:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:02:37,843 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:02:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:02:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:02:37,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:02:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 12:02:37,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 12:02:37,906 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:02:37,908 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:02:38,575 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:02:38,606 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:02:38,606 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 12:02:38,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:38 BoogieIcfgContainer [2023-11-26 12:02:38,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:02:38,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:02:38,611 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:02:38,614 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:02:38,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:02:37" (1/3) ... [2023-11-26 12:02:38,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2fd260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:38, skipping insertion in model container [2023-11-26 12:02:38,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:37" (2/3) ... [2023-11-26 12:02:38,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2fd260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:38, skipping insertion in model container [2023-11-26 12:02:38,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:38" (3/3) ... [2023-11-26 12:02:38,618 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound100.c [2023-11-26 12:02:38,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:02:38,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2023-11-26 12:02:38,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:02:38,704 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;@6ad5b8f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:02:38,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2023-11-26 12:02:38,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 84 states have (on average 1.9047619047619047) internal successors, (160), 153 states have internal predecessors, (160), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 12:02:38,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 12:02:38,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:38,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:38,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:38,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:38,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1933443539, now seen corresponding path program 1 times [2023-11-26 12:02:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:38,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182309332] [2023-11-26 12:02:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:38,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:38,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:38,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182309332] [2023-11-26 12:02:38,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-26 12:02:38,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740565169] [2023-11-26 12:02:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:38,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:38,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:38,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:38,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:02:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:38,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 12:02:38,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:02:38,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:38,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740565169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:38,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:38,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709802416] [2023-11-26 12:02:38,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:38,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 12:02:38,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:39,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 12:02:39,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 12:02:39,020 INFO L87 Difference]: Start difference. First operand has 165 states, 84 states have (on average 1.9047619047619047) internal successors, (160), 153 states have internal predecessors, (160), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 12:02:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:39,074 INFO L93 Difference]: Finished difference Result 327 states and 367 transitions. [2023-11-26 12:02:39,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 12:02:39,077 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2023-11-26 12:02:39,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:39,087 INFO L225 Difference]: With dead ends: 327 [2023-11-26 12:02:39,088 INFO L226 Difference]: Without dead ends: 161 [2023-11-26 12:02:39,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 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 12:02:39,096 INFO L413 NwaCegarLoop]: 173 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, 173 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 12:02:39,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:39,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-26 12:02:39,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-26 12:02:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 83 states have (on average 1.8433734939759037) internal successors, (153), 150 states have internal predecessors, (153), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 12:02:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2023-11-26 12:02:39,154 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 13 [2023-11-26 12:02:39,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:39,154 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2023-11-26 12:02:39,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 12:02:39,155 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2023-11-26 12:02:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 12:02:39,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:39,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:39,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:39,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:39,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:39,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1970343789, now seen corresponding path program 1 times [2023-11-26 12:02:39,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:39,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526243004] [2023-11-26 12:02:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:39,401 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:39,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280306046] [2023-11-26 12:02:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:39,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:39,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:39,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:39,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:02:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:39,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 12:02:39,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 12:02:39,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:39,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:39,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526243004] [2023-11-26 12:02:39,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:39,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280306046] [2023-11-26 12:02:39,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280306046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:39,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:39,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:02:39,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70938618] [2023-11-26 12:02:39,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:39,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:02:39,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:39,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:02:39,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:02:39,626 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand has 7 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 12:02:39,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:39,951 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2023-11-26 12:02:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:02:39,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 13 [2023-11-26 12:02:39,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:39,954 INFO L225 Difference]: With dead ends: 161 [2023-11-26 12:02:39,955 INFO L226 Difference]: Without dead ends: 159 [2023-11-26 12:02:39,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:02:39,957 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 431 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:39,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 248 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:02:39,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-26 12:02:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-26 12:02:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 83 states have (on average 1.819277108433735) internal successors, (151), 148 states have internal predecessors, (151), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 12:02:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2023-11-26 12:02:39,983 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 13 [2023-11-26 12:02:39,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:39,984 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2023-11-26 12:02:39,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 12:02:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2023-11-26 12:02:39,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 12:02:39,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:39,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:39,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:40,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:40,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:40,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash 951115354, now seen corresponding path program 1 times [2023-11-26 12:02:40,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:40,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398702750] [2023-11-26 12:02:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:40,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:40,204 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:40,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942496460] [2023-11-26 12:02:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:40,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:40,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:40,207 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:40,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:02:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:40,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:02:40,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 12:02:40,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:40,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:40,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398702750] [2023-11-26 12:02:40,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:40,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942496460] [2023-11-26 12:02:40,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942496460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:40,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:40,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:02:40,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124954961] [2023-11-26 12:02:40,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:40,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:02:40,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:40,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:02:40,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:02:40,399 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:02:40,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:40,726 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2023-11-26 12:02:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:02:40,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-26 12:02:40,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:40,731 INFO L225 Difference]: With dead ends: 159 [2023-11-26 12:02:40,731 INFO L226 Difference]: Without dead ends: 158 [2023-11-26 12:02:40,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:02:40,734 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 143 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:40,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 262 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:02:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-26 12:02:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-11-26 12:02:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 83 states have (on average 1.8072289156626506) internal successors, (150), 147 states have internal predecessors, (150), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 12:02:40,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2023-11-26 12:02:40,757 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 14 [2023-11-26 12:02:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:40,757 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2023-11-26 12:02:40,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 12:02:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2023-11-26 12:02:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-26 12:02:40,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:40,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:40,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:40,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:40,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:40,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:40,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1564000962, now seen corresponding path program 1 times [2023-11-26 12:02:40,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:40,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416808446] [2023-11-26 12:02:40,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:40,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:40,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:40,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193673502] [2023-11-26 12:02:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:40,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:40,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:40,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:41,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:02:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:41,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:02:41,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:02:41,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:41,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:41,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416808446] [2023-11-26 12:02:41,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:41,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193673502] [2023-11-26 12:02:41,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193673502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:41,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:41,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:41,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190137579] [2023-11-26 12:02:41,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:41,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:41,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:41,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:41,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:41,145 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:02:41,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:41,189 INFO L93 Difference]: Finished difference Result 199 states and 210 transitions. [2023-11-26 12:02:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:02:41,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2023-11-26 12:02:41,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:41,192 INFO L225 Difference]: With dead ends: 199 [2023-11-26 12:02:41,192 INFO L226 Difference]: Without dead ends: 198 [2023-11-26 12:02:41,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 12:02:41,198 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 42 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:41,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 466 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:41,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-26 12:02:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2023-11-26 12:02:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 97 states have (on average 1.7835051546391754) internal successors, (173), 161 states have internal predecessors, (173), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 12:02:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 193 transitions. [2023-11-26 12:02:41,238 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 193 transitions. Word has length 28 [2023-11-26 12:02:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:41,238 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 193 transitions. [2023-11-26 12:02:41,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:02:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 193 transitions. [2023-11-26 12:02:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 12:02:41,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:41,241 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:41,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:41,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:41,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:41,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:41,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1239389620, now seen corresponding path program 1 times [2023-11-26 12:02:41,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:41,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693891066] [2023-11-26 12:02:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:41,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:41,461 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:41,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355042471] [2023-11-26 12:02:41,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:41,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:41,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:41,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:41,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 12:02:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:41,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:02:41,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:02:41,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:41,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:41,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693891066] [2023-11-26 12:02:41,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:41,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355042471] [2023-11-26 12:02:41,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355042471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:41,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:41,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:41,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443130782] [2023-11-26 12:02:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:41,605 INFO L87 Difference]: Start difference. First operand 174 states and 193 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:02:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:41,641 INFO L93 Difference]: Finished difference Result 204 states and 221 transitions. [2023-11-26 12:02:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:02:41,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-11-26 12:02:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:41,645 INFO L225 Difference]: With dead ends: 204 [2023-11-26 12:02:41,645 INFO L226 Difference]: Without dead ends: 174 [2023-11-26 12:02:41,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 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 12:02:41,647 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 3 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:41,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 469 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-26 12:02:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-11-26 12:02:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 97 states have (on average 1.7628865979381443) internal successors, (171), 161 states have internal predecessors, (171), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 12:02:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 191 transitions. [2023-11-26 12:02:41,660 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 191 transitions. Word has length 29 [2023-11-26 12:02:41,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:41,660 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 191 transitions. [2023-11-26 12:02:41,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:02:41,661 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 191 transitions. [2023-11-26 12:02:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 12:02:41,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:41,662 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:41,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:41,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:41,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:41,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:41,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1177615479, now seen corresponding path program 1 times [2023-11-26 12:02:41,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:41,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751636692] [2023-11-26 12:02:41,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:41,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:41,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:41,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926240701] [2023-11-26 12:02:41,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:41,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:41,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:41,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:41,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 12:02:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:41,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:02:41,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:42,032 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:42,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:42,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:42,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751636692] [2023-11-26 12:02:42,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926240701] [2023-11-26 12:02:42,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926240701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:42,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:42,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-26 12:02:42,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657022778] [2023-11-26 12:02:42,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:42,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:02:42,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:42,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:02:42,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:02:42,140 INFO L87 Difference]: Start difference. First operand 174 states and 191 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:42,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:42,524 INFO L93 Difference]: Finished difference Result 283 states and 300 transitions. [2023-11-26 12:02:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:02:42,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-11-26 12:02:42,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:42,526 INFO L225 Difference]: With dead ends: 283 [2023-11-26 12:02:42,527 INFO L226 Difference]: Without dead ends: 253 [2023-11-26 12:02:42,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:02:42,528 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 328 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:42,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 445 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:02:42,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-26 12:02:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 212. [2023-11-26 12:02:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 133 states have (on average 1.8270676691729324) internal successors, (243), 196 states have internal predecessors, (243), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 12:02:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 269 transitions. [2023-11-26 12:02:42,545 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 269 transitions. Word has length 32 [2023-11-26 12:02:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:42,546 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 269 transitions. [2023-11-26 12:02:42,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 269 transitions. [2023-11-26 12:02:42,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-26 12:02:42,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:42,550 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:42,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 12:02:42,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 12:02:42,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:42,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2146343301, now seen corresponding path program 1 times [2023-11-26 12:02:42,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:42,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706732356] [2023-11-26 12:02:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:42,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:42,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364864389] [2023-11-26 12:02:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:42,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:42,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:42,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:42,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 12:02:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:42,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:02:42,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:02:42,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:42,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:42,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706732356] [2023-11-26 12:02:42,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:42,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364864389] [2023-11-26 12:02:42,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364864389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:42,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:42,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:02:42,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699765821] [2023-11-26 12:02:42,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:42,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:02:42,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:42,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:02:42,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:42,866 INFO L87 Difference]: Start difference. First operand 212 states and 269 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:02:42,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:42,928 INFO L93 Difference]: Finished difference Result 212 states and 269 transitions. [2023-11-26 12:02:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:02:42,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2023-11-26 12:02:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:42,934 INFO L225 Difference]: With dead ends: 212 [2023-11-26 12:02:42,935 INFO L226 Difference]: Without dead ends: 210 [2023-11-26 12:02:42,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:02:42,936 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 166 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:42,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 459 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-26 12:02:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2023-11-26 12:02:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 133 states have (on average 1.8045112781954886) internal successors, (240), 194 states have internal predecessors, (240), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 12:02:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 266 transitions. [2023-11-26 12:02:42,951 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 266 transitions. Word has length 33 [2023-11-26 12:02:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:42,952 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 266 transitions. [2023-11-26 12:02:42,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:02:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 266 transitions. [2023-11-26 12:02:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 12:02:42,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:42,953 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:42,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:43,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 12:02:43,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:43,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2112132818, now seen corresponding path program 1 times [2023-11-26 12:02:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29538375] [2023-11-26 12:02:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:43,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:43,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126619781] [2023-11-26 12:02:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:43,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:43,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:43,182 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:43,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 12:02:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:43,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:02:43,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:02:43,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:43,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29538375] [2023-11-26 12:02:43,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:43,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126619781] [2023-11-26 12:02:43,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126619781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:43,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:43,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:02:43,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284052906] [2023-11-26 12:02:43,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:43,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:02:43,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:43,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:02:43,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:43,280 INFO L87 Difference]: Start difference. First operand 210 states and 266 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:02:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:43,398 INFO L93 Difference]: Finished difference Result 248 states and 306 transitions. [2023-11-26 12:02:43,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:02:43,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2023-11-26 12:02:43,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:43,401 INFO L225 Difference]: With dead ends: 248 [2023-11-26 12:02:43,401 INFO L226 Difference]: Without dead ends: 247 [2023-11-26 12:02:43,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:02:43,403 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 53 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:43,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 636 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:02:43,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-26 12:02:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 227. [2023-11-26 12:02:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 148 states have (on average 1.7635135135135136) internal successors, (261), 210 states have internal predecessors, (261), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-26 12:02:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 289 transitions. [2023-11-26 12:02:43,421 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 289 transitions. Word has length 34 [2023-11-26 12:02:43,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:43,423 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 289 transitions. [2023-11-26 12:02:43,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:02:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 289 transitions. [2023-11-26 12:02:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 12:02:43,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:43,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:43,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:43,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:43,633 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:43,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:43,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1759895408, now seen corresponding path program 1 times [2023-11-26 12:02:43,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:43,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99255531] [2023-11-26 12:02:43,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:43,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:43,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:43,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471890656] [2023-11-26 12:02:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:43,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:43,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:43,646 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:43,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 12:02:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:43,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:02:43,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:43,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:43,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:43,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99255531] [2023-11-26 12:02:43,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:43,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471890656] [2023-11-26 12:02:43,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471890656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:02:43,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:02:43,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 12:02:43,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373037096] [2023-11-26 12:02:43,990 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:43,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:02:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:43,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:02:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:02:43,994 INFO L87 Difference]: Start difference. First operand 227 states and 289 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:44,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:44,525 INFO L93 Difference]: Finished difference Result 268 states and 290 transitions. [2023-11-26 12:02:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:02:44,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2023-11-26 12:02:44,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:44,528 INFO L225 Difference]: With dead ends: 268 [2023-11-26 12:02:44,528 INFO L226 Difference]: Without dead ends: 266 [2023-11-26 12:02:44,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:02:44,529 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 322 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:44,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 414 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 12:02:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-26 12:02:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2023-11-26 12:02:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 148 states have (on average 1.75) internal successors, (259), 210 states have internal predecessors, (259), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-26 12:02:44,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 287 transitions. [2023-11-26 12:02:44,545 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 287 transitions. Word has length 36 [2023-11-26 12:02:44,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:44,545 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 287 transitions. [2023-11-26 12:02:44,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:44,545 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 287 transitions. [2023-11-26 12:02:44,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-26 12:02:44,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:44,546 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:44,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:44,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:44,755 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:44,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:44,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1277817118, now seen corresponding path program 1 times [2023-11-26 12:02:44,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:44,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796050710] [2023-11-26 12:02:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:44,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:44,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:44,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695888973] [2023-11-26 12:02:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:44,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:44,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:44,767 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:44,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 12:02:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:44,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:02:44,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:44,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:45,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796050710] [2023-11-26 12:02:45,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695888973] [2023-11-26 12:02:45,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695888973] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:02:45,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:02:45,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 12:02:45,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704124996] [2023-11-26 12:02:45,006 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:45,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:02:45,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:45,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:02:45,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:02:45,008 INFO L87 Difference]: Start difference. First operand 227 states and 287 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:45,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:45,460 INFO L93 Difference]: Finished difference Result 349 states and 378 transitions. [2023-11-26 12:02:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:02:45,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2023-11-26 12:02:45,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:45,463 INFO L225 Difference]: With dead ends: 349 [2023-11-26 12:02:45,463 INFO L226 Difference]: Without dead ends: 347 [2023-11-26 12:02:45,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:02:45,464 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 401 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:45,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 456 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:02:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-26 12:02:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 273. [2023-11-26 12:02:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 190 states have (on average 1.7789473684210526) internal successors, (338), 252 states have internal predecessors, (338), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 12:02:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 374 transitions. [2023-11-26 12:02:45,482 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 374 transitions. Word has length 37 [2023-11-26 12:02:45,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:45,482 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 374 transitions. [2023-11-26 12:02:45,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 374 transitions. [2023-11-26 12:02:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-26 12:02:45,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:45,483 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:45,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:45,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 12:02:45,689 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:45,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:45,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1277816128, now seen corresponding path program 1 times [2023-11-26 12:02:45,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:45,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357592399] [2023-11-26 12:02:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:45,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:45,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:45,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879061456] [2023-11-26 12:02:45,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:45,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:45,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:45,710 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:45,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 12:02:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:45,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:02:45,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:02:45,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:45,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:45,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357592399] [2023-11-26 12:02:45,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:45,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879061456] [2023-11-26 12:02:45,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879061456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:45,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:45,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:02:45,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756601913] [2023-11-26 12:02:45,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:45,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:02:45,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:45,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:02:45,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:02:45,863 INFO L87 Difference]: Start difference. First operand 273 states and 374 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:02:45,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:45,926 INFO L93 Difference]: Finished difference Result 429 states and 543 transitions. [2023-11-26 12:02:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:02:45,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2023-11-26 12:02:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:45,929 INFO L225 Difference]: With dead ends: 429 [2023-11-26 12:02:45,929 INFO L226 Difference]: Without dead ends: 273 [2023-11-26 12:02:45,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:02:45,931 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 5 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:45,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 753 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-26 12:02:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-11-26 12:02:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 190 states have (on average 1.7736842105263158) internal successors, (337), 252 states have internal predecessors, (337), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 12:02:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 373 transitions. [2023-11-26 12:02:45,947 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 373 transitions. Word has length 37 [2023-11-26 12:02:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:45,947 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 373 transitions. [2023-11-26 12:02:45,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 12:02:45,947 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 373 transitions. [2023-11-26 12:02:45,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 12:02:45,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:45,948 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:45,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:46,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:46,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:46,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash -957624910, now seen corresponding path program 1 times [2023-11-26 12:02:46,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:46,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477120381] [2023-11-26 12:02:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:46,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:46,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:46,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412408637] [2023-11-26 12:02:46,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:46,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:46,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:46,166 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:46,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 12:02:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:46,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:02:46,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:46,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:46,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:46,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477120381] [2023-11-26 12:02:46,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:46,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412408637] [2023-11-26 12:02:46,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412408637] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:02:46,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:02:46,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 12:02:46,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640077526] [2023-11-26 12:02:46,526 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:46,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:02:46,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:46,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:02:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:02:46,528 INFO L87 Difference]: Start difference. First operand 273 states and 373 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:02:47,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:47,525 INFO L93 Difference]: Finished difference Result 420 states and 449 transitions. [2023-11-26 12:02:47,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:02:47,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2023-11-26 12:02:47,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:47,530 INFO L225 Difference]: With dead ends: 420 [2023-11-26 12:02:47,530 INFO L226 Difference]: Without dead ends: 419 [2023-11-26 12:02:47,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:02:47,531 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 617 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:47,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 626 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 12:02:47,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-26 12:02:47,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 273. [2023-11-26 12:02:47,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 190 states have (on average 1.768421052631579) internal successors, (336), 252 states have internal predecessors, (336), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 12:02:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 372 transitions. [2023-11-26 12:02:47,549 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 372 transitions. Word has length 38 [2023-11-26 12:02:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:47,549 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 372 transitions. [2023-11-26 12:02:47,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 12:02:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 372 transitions. [2023-11-26 12:02:47,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-26 12:02:47,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:47,551 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:47,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:47,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 12:02:47,756 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:47,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash 378398948, now seen corresponding path program 1 times [2023-11-26 12:02:47,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:47,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590431709] [2023-11-26 12:02:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:47,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:47,767 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:47,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272299571] [2023-11-26 12:02:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:47,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:47,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:47,768 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:47,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 12:02:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:47,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 12:02:47,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:47,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:48,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:48,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590431709] [2023-11-26 12:02:48,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:48,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272299571] [2023-11-26 12:02:48,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272299571] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:02:48,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:02:48,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 12:02:48,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413040975] [2023-11-26 12:02:48,150 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:48,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:02:48,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:48,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:02:48,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:02:48,152 INFO L87 Difference]: Start difference. First operand 273 states and 372 transitions. Second operand has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:50,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:50,644 INFO L93 Difference]: Finished difference Result 347 states and 374 transitions. [2023-11-26 12:02:50,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:02:50,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2023-11-26 12:02:50,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:50,647 INFO L225 Difference]: With dead ends: 347 [2023-11-26 12:02:50,647 INFO L226 Difference]: Without dead ends: 345 [2023-11-26 12:02:50,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:02:50,648 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 533 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:50,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 315 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 12:02:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-26 12:02:50,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 273. [2023-11-26 12:02:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 190 states have (on average 1.7578947368421052) internal successors, (334), 252 states have internal predecessors, (334), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 12:02:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 370 transitions. [2023-11-26 12:02:50,673 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 370 transitions. Word has length 39 [2023-11-26 12:02:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:50,673 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 370 transitions. [2023-11-26 12:02:50,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 12:02:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 370 transitions. [2023-11-26 12:02:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-26 12:02:50,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:50,675 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:50,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:50,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 12:02:50,881 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:50,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:50,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1317127471, now seen corresponding path program 1 times [2023-11-26 12:02:50,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:50,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162024589] [2023-11-26 12:02:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:50,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:50,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:50,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630549894] [2023-11-26 12:02:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:50,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:50,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:50,900 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:50,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 12:02:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:50,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:02:50,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:51,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:51,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:51,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162024589] [2023-11-26 12:02:51,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:51,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630549894] [2023-11-26 12:02:51,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630549894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:51,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:51,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-11-26 12:02:51,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178031268] [2023-11-26 12:02:51,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:51,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:02:51,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:02:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:02:51,302 INFO L87 Difference]: Start difference. First operand 273 states and 370 transitions. Second operand has 10 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 12:02:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:54,111 INFO L93 Difference]: Finished difference Result 339 states and 402 transitions. [2023-11-26 12:02:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:02:54,112 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 45 [2023-11-26 12:02:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:54,114 INFO L225 Difference]: With dead ends: 339 [2023-11-26 12:02:54,115 INFO L226 Difference]: Without dead ends: 338 [2023-11-26 12:02:54,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:02:54,116 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 482 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:54,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 363 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-26 12:02:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-26 12:02:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 280. [2023-11-26 12:02:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 196 states have (on average 1.75) internal successors, (343), 258 states have internal predecessors, (343), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 12:02:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 381 transitions. [2023-11-26 12:02:54,134 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 381 transitions. Word has length 45 [2023-11-26 12:02:54,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:54,134 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 381 transitions. [2023-11-26 12:02:54,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 12:02:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 381 transitions. [2023-11-26 12:02:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-26 12:02:54,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:54,136 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:54,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:54,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 12:02:54,343 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:54,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:54,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2118721450, now seen corresponding path program 1 times [2023-11-26 12:02:54,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:54,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057244327] [2023-11-26 12:02:54,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:54,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:54,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:54,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634484047] [2023-11-26 12:02:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:54,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:54,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:54,376 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:54,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 12:02:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:54,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:02:54,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:54,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:54,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057244327] [2023-11-26 12:02:54,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:54,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634484047] [2023-11-26 12:02:54,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634484047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:54,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:54,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-11-26 12:02:54,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243517131] [2023-11-26 12:02:54,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:54,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:02:54,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:54,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:02:54,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:02:54,924 INFO L87 Difference]: Start difference. First operand 280 states and 381 transitions. Second operand has 10 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 12:02:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:57,168 INFO L93 Difference]: Finished difference Result 340 states and 401 transitions. [2023-11-26 12:02:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:02:57,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 46 [2023-11-26 12:02:57,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:57,171 INFO L225 Difference]: With dead ends: 340 [2023-11-26 12:02:57,171 INFO L226 Difference]: Without dead ends: 339 [2023-11-26 12:02:57,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-26 12:02:57,172 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 656 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:57,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 453 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-26 12:02:57,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-26 12:02:57,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 281. [2023-11-26 12:02:57,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 197 states have (on average 1.736040609137056) internal successors, (342), 259 states have internal predecessors, (342), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 12:02:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 380 transitions. [2023-11-26 12:02:57,191 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 380 transitions. Word has length 46 [2023-11-26 12:02:57,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:57,191 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 380 transitions. [2023-11-26 12:02:57,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-26 12:02:57,192 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 380 transitions. [2023-11-26 12:02:57,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-26 12:02:57,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:57,193 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:57,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:57,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 12:02:57,398 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:57,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:57,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1255855603, now seen corresponding path program 1 times [2023-11-26 12:02:57,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:57,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445491200] [2023-11-26 12:02:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:57,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:57,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:57,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924783160] [2023-11-26 12:02:57,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:57,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:57,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:57,413 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:57,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 12:02:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:57,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:02:57,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:57,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:02:57,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445491200] [2023-11-26 12:02:57,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924783160] [2023-11-26 12:02:57,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924783160] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:57,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:57,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 12:02:57,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636668054] [2023-11-26 12:02:57,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:57,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:02:57,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:57,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:02:57,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:02:57,764 INFO L87 Difference]: Start difference. First operand 281 states and 380 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 12:02:59,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:59,389 INFO L93 Difference]: Finished difference Result 324 states and 384 transitions. [2023-11-26 12:02:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:02:59,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 47 [2023-11-26 12:02:59,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:59,417 INFO L225 Difference]: With dead ends: 324 [2023-11-26 12:02:59,417 INFO L226 Difference]: Without dead ends: 323 [2023-11-26 12:02:59,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:02:59,419 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 431 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:59,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 492 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 12:02:59,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-26 12:02:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 282. [2023-11-26 12:02:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.7222222222222223) internal successors, (341), 260 states have internal predecessors, (341), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 12:02:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 379 transitions. [2023-11-26 12:02:59,449 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 379 transitions. Word has length 47 [2023-11-26 12:02:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:59,450 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 379 transitions. [2023-11-26 12:02:59,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-26 12:02:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 379 transitions. [2023-11-26 12:02:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 12:02:59,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:59,453 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:59,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 12:02:59,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 12:02:59,659 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:02:59,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash 276818124, now seen corresponding path program 1 times [2023-11-26 12:02:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:59,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655413244] [2023-11-26 12:02:59,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:59,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:59,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:02:59,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951106109] [2023-11-26 12:02:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:59,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:02:59,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:59,673 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:02:59,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 12:02:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:59,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:02:59,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:02:59,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:59,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655413244] [2023-11-26 12:02:59,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:02:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951106109] [2023-11-26 12:02:59,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951106109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:59,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:59,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:02:59,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940438730] [2023-11-26 12:02:59,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:59,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:59,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:59,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:59,834 INFO L87 Difference]: Start difference. First operand 282 states and 379 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 12:03:00,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:00,019 INFO L93 Difference]: Finished difference Result 318 states and 380 transitions. [2023-11-26 12:03:00,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:03:00,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2023-11-26 12:03:00,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:00,025 INFO L225 Difference]: With dead ends: 318 [2023-11-26 12:03:00,025 INFO L226 Difference]: Without dead ends: 317 [2023-11-26 12:03:00,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:00,028 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 207 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:00,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 226 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:03:00,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-26 12:03:00,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 282. [2023-11-26 12:03:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.7121212121212122) internal successors, (339), 260 states have internal predecessors, (339), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 12:03:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 377 transitions. [2023-11-26 12:03:00,050 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 377 transitions. Word has length 48 [2023-11-26 12:03:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:00,050 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 377 transitions. [2023-11-26 12:03:00,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 12:03:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 377 transitions. [2023-11-26 12:03:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 12:03:00,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:00,051 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:00,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:00,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 12:03:00,257 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:00,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:00,258 INFO L85 PathProgramCache]: Analyzing trace with hash -8572651, now seen corresponding path program 1 times [2023-11-26 12:03:00,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:00,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18825088] [2023-11-26 12:03:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:00,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:00,277 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:00,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013265724] [2023-11-26 12:03:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:00,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:00,304 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:00,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 12:03:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:00,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:03:00,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:03:00,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:00,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:00,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18825088] [2023-11-26 12:03:00,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:00,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013265724] [2023-11-26 12:03:00,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013265724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:00,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:03:00,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 12:03:00,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983300679] [2023-11-26 12:03:00,699 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:00,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:03:00,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:00,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:03:00,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:03:00,701 INFO L87 Difference]: Start difference. First operand 282 states and 377 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 12:03:01,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:01,056 INFO L93 Difference]: Finished difference Result 317 states and 378 transitions. [2023-11-26 12:03:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:03:01,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2023-11-26 12:03:01,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:01,059 INFO L225 Difference]: With dead ends: 317 [2023-11-26 12:03:01,059 INFO L226 Difference]: Without dead ends: 316 [2023-11-26 12:03:01,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:03:01,060 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 207 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:01,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 406 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 12:03:01,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-26 12:03:01,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 282. [2023-11-26 12:03:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.702020202020202) internal successors, (337), 260 states have internal predecessors, (337), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 12:03:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 375 transitions. [2023-11-26 12:03:01,079 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 375 transitions. Word has length 49 [2023-11-26 12:03:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:01,080 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 375 transitions. [2023-11-26 12:03:01,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-26 12:03:01,080 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 375 transitions. [2023-11-26 12:03:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 12:03:01,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:01,081 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:01,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:01,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 12:03:01,291 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:01,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash -265752082, now seen corresponding path program 1 times [2023-11-26 12:03:01,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:01,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545192569] [2023-11-26 12:03:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:01,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:01,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:01,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431902527] [2023-11-26 12:03:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:01,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:01,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:01,310 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:01,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 12:03:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:01,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:03:01,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 12:03:01,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:01,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:01,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545192569] [2023-11-26 12:03:01,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:01,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431902527] [2023-11-26 12:03:01,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431902527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:01,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:03:01,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-26 12:03:01,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761346766] [2023-11-26 12:03:01,843 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:01,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:03:01,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:01,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:03:01,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:03:01,846 INFO L87 Difference]: Start difference. First operand 282 states and 375 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 12:03:04,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:04,017 INFO L93 Difference]: Finished difference Result 324 states and 384 transitions. [2023-11-26 12:03:04,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:03:04,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2023-11-26 12:03:04,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:04,020 INFO L225 Difference]: With dead ends: 324 [2023-11-26 12:03:04,020 INFO L226 Difference]: Without dead ends: 323 [2023-11-26 12:03:04,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:03:04,022 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 362 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:04,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 428 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-26 12:03:04,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-26 12:03:04,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 282. [2023-11-26 12:03:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.6919191919191918) internal successors, (335), 260 states have internal predecessors, (335), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 12:03:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 373 transitions. [2023-11-26 12:03:04,042 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 373 transitions. Word has length 50 [2023-11-26 12:03:04,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:04,042 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 373 transitions. [2023-11-26 12:03:04,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 12:03:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 373 transitions. [2023-11-26 12:03:04,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 12:03:04,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:04,043 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:04,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:04,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:04,250 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:04,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:04,250 INFO L85 PathProgramCache]: Analyzing trace with hash -682195484, now seen corresponding path program 1 times [2023-11-26 12:03:04,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:04,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055977421] [2023-11-26 12:03:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:04,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:04,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:04,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190561806] [2023-11-26 12:03:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:04,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:04,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:04,262 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:04,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 12:03:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:04,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:03:04,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:04,532 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 12:03:04,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:04,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:04,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055977421] [2023-11-26 12:03:04,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:04,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190561806] [2023-11-26 12:03:04,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190561806] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:04,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:03:04,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 12:03:04,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951793076] [2023-11-26 12:03:04,654 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:04,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:03:04,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:04,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:03:04,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:03:04,656 INFO L87 Difference]: Start difference. First operand 282 states and 373 transitions. Second operand has 7 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 12:03:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:06,010 INFO L93 Difference]: Finished difference Result 321 states and 382 transitions. [2023-11-26 12:03:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:03:06,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 56 [2023-11-26 12:03:06,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:06,013 INFO L225 Difference]: With dead ends: 321 [2023-11-26 12:03:06,014 INFO L226 Difference]: Without dead ends: 319 [2023-11-26 12:03:06,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:03:06,015 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 279 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:06,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 357 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 12:03:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-26 12:03:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 282. [2023-11-26 12:03:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.6717171717171717) internal successors, (331), 260 states have internal predecessors, (331), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 12:03:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 369 transitions. [2023-11-26 12:03:06,034 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 369 transitions. Word has length 56 [2023-11-26 12:03:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:06,034 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 369 transitions. [2023-11-26 12:03:06,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 12:03:06,035 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 369 transitions. [2023-11-26 12:03:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 12:03:06,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:06,035 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:06,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:06,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:06,242 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:06,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash 326776580, now seen corresponding path program 1 times [2023-11-26 12:03:06,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:06,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438904167] [2023-11-26 12:03:06,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:06,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:06,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:06,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488055928] [2023-11-26 12:03:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:06,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:06,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:06,253 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:06,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 12:03:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:06,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:03:06,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:06,501 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 12:03:06,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:06,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:06,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438904167] [2023-11-26 12:03:06,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:06,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488055928] [2023-11-26 12:03:06,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488055928] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:06,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:03:06,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-26 12:03:06,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293246597] [2023-11-26 12:03:06,755 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:06,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:03:06,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:06,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:03:06,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:03:06,756 INFO L87 Difference]: Start difference. First operand 282 states and 369 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 12:03:07,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:07,938 INFO L93 Difference]: Finished difference Result 321 states and 378 transitions. [2023-11-26 12:03:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:03:07,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 57 [2023-11-26 12:03:07,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:07,940 INFO L225 Difference]: With dead ends: 321 [2023-11-26 12:03:07,940 INFO L226 Difference]: Without dead ends: 319 [2023-11-26 12:03:07,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:03:07,941 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 338 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:07,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 351 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 12:03:07,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-26 12:03:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 282. [2023-11-26 12:03:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 198 states have (on average 1.6515151515151516) internal successors, (327), 260 states have internal predecessors, (327), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 12:03:07,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 365 transitions. [2023-11-26 12:03:07,960 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 365 transitions. Word has length 57 [2023-11-26 12:03:07,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:07,961 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 365 transitions. [2023-11-26 12:03:07,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 12:03:07,961 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 365 transitions. [2023-11-26 12:03:07,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 12:03:07,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:07,962 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:07,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:08,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:08,168 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:08,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:08,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1540139494, now seen corresponding path program 1 times [2023-11-26 12:03:08,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:08,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664023825] [2023-11-26 12:03:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:08,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:08,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:08,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280241967] [2023-11-26 12:03:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:08,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:08,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:08,185 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:08,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 12:03:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:08,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:03:08,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 12:03:08,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 12:03:08,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:08,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664023825] [2023-11-26 12:03:08,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:08,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280241967] [2023-11-26 12:03:08,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280241967] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:03:08,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:03:08,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 12:03:08,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974114925] [2023-11-26 12:03:08,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:08,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:03:08,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:08,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:03:08,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:03:08,532 INFO L87 Difference]: Start difference. First operand 282 states and 365 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-26 12:03:10,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:10,758 INFO L93 Difference]: Finished difference Result 359 states and 413 transitions. [2023-11-26 12:03:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:03:10,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 58 [2023-11-26 12:03:10,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:10,762 INFO L225 Difference]: With dead ends: 359 [2023-11-26 12:03:10,762 INFO L226 Difference]: Without dead ends: 357 [2023-11-26 12:03:10,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:03:10,763 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 592 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:10,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 491 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-26 12:03:10,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-26 12:03:10,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 288. [2023-11-26 12:03:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 204 states have (on average 1.6323529411764706) internal successors, (333), 265 states have internal predecessors, (333), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 12:03:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 373 transitions. [2023-11-26 12:03:10,784 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 373 transitions. Word has length 58 [2023-11-26 12:03:10,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:10,784 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 373 transitions. [2023-11-26 12:03:10,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-26 12:03:10,784 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 373 transitions. [2023-11-26 12:03:10,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 12:03:10,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:10,785 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:10,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:10,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-26 12:03:10,991 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:10,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:10,991 INFO L85 PathProgramCache]: Analyzing trace with hash 499684166, now seen corresponding path program 1 times [2023-11-26 12:03:10,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:10,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615758726] [2023-11-26 12:03:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:10,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:10,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:10,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247125377] [2023-11-26 12:03:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:10,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:10,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:11,000 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:11,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-26 12:03:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:11,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:03:11,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:11,187 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 12:03:11,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:11,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:11,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615758726] [2023-11-26 12:03:11,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:11,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247125377] [2023-11-26 12:03:11,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247125377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:11,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:11,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:11,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575041043] [2023-11-26 12:03:11,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:11,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:03:11,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:11,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:03:11,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:11,191 INFO L87 Difference]: Start difference. First operand 288 states and 373 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 12:03:11,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:11,791 INFO L93 Difference]: Finished difference Result 331 states and 390 transitions. [2023-11-26 12:03:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:03:11,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2023-11-26 12:03:11,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:11,794 INFO L225 Difference]: With dead ends: 331 [2023-11-26 12:03:11,795 INFO L226 Difference]: Without dead ends: 329 [2023-11-26 12:03:11,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:11,796 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 276 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:11,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 167 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 12:03:11,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-26 12:03:11,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 288. [2023-11-26 12:03:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 204 states have (on average 1.6127450980392157) internal successors, (329), 265 states have internal predecessors, (329), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 12:03:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 369 transitions. [2023-11-26 12:03:11,819 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 369 transitions. Word has length 59 [2023-11-26 12:03:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:11,820 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 369 transitions. [2023-11-26 12:03:11,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 12:03:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 369 transitions. [2023-11-26 12:03:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 12:03:11,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:11,821 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:11,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:12,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:12,027 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:12,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:12,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1689659928, now seen corresponding path program 1 times [2023-11-26 12:03:12,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:12,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736935063] [2023-11-26 12:03:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:12,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:12,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:12,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087561473] [2023-11-26 12:03:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:12,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:12,034 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:12,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-26 12:03:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:12,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:03:12,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 12:03:12,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:12,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736935063] [2023-11-26 12:03:12,392 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087561473] [2023-11-26 12:03:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087561473] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:12,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:03:12,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-26 12:03:12,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830427889] [2023-11-26 12:03:12,393 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:12,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:03:12,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:12,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:03:12,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:03:12,394 INFO L87 Difference]: Start difference. First operand 288 states and 369 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 12:03:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:13,522 INFO L93 Difference]: Finished difference Result 321 states and 378 transitions. [2023-11-26 12:03:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:03:13,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2023-11-26 12:03:13,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:13,527 INFO L225 Difference]: With dead ends: 321 [2023-11-26 12:03:13,527 INFO L226 Difference]: Without dead ends: 316 [2023-11-26 12:03:13,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:03:13,528 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 194 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:13,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 299 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 12:03:13,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-26 12:03:13,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 291. [2023-11-26 12:03:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.5748792270531402) internal successors, (326), 268 states have internal predecessors, (326), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 12:03:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2023-11-26 12:03:13,576 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 60 [2023-11-26 12:03:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:13,577 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2023-11-26 12:03:13,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 12:03:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2023-11-26 12:03:13,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 12:03:13,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:13,579 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:13,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:13,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:13,785 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:13,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:13,785 INFO L85 PathProgramCache]: Analyzing trace with hash -839850104, now seen corresponding path program 1 times [2023-11-26 12:03:13,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:13,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638581475] [2023-11-26 12:03:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:13,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:13,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:13,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513741159] [2023-11-26 12:03:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:13,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:13,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:13,793 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:13,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-26 12:03:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:13,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 12:03:13,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 12:03:14,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:15,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:15,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638581475] [2023-11-26 12:03:15,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:15,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513741159] [2023-11-26 12:03:15,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513741159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:15,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:03:15,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-26 12:03:15,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321326586] [2023-11-26 12:03:15,286 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:15,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:03:15,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:15,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:03:15,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:03:15,287 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 12:03:18,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:18,569 INFO L93 Difference]: Finished difference Result 316 states and 370 transitions. [2023-11-26 12:03:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:03:18,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 61 [2023-11-26 12:03:18,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:18,573 INFO L225 Difference]: With dead ends: 316 [2023-11-26 12:03:18,573 INFO L226 Difference]: Without dead ends: 315 [2023-11-26 12:03:18,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-26 12:03:18,574 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 396 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:18,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 529 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-26 12:03:18,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-26 12:03:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 291. [2023-11-26 12:03:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.565217391304348) internal successors, (324), 268 states have internal predecessors, (324), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 12:03:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 364 transitions. [2023-11-26 12:03:18,615 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 364 transitions. Word has length 61 [2023-11-26 12:03:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:18,615 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 364 transitions. [2023-11-26 12:03:18,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 12:03:18,617 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 364 transitions. [2023-11-26 12:03:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 12:03:18,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:18,618 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:18,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:18,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:18,823 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:18,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:18,824 INFO L85 PathProgramCache]: Analyzing trace with hash 29219433, now seen corresponding path program 1 times [2023-11-26 12:03:18,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:18,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520360227] [2023-11-26 12:03:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:18,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:18,835 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:18,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290206429] [2023-11-26 12:03:18,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:18,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:18,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:18,838 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:18,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-26 12:03:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:18,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:03:18,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 12:03:19,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:19,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:19,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520360227] [2023-11-26 12:03:19,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:19,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290206429] [2023-11-26 12:03:19,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290206429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:19,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:19,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:19,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486869984] [2023-11-26 12:03:19,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:19,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:03:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:19,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:03:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:19,064 INFO L87 Difference]: Start difference. First operand 291 states and 364 transitions. Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:03:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:19,219 INFO L93 Difference]: Finished difference Result 323 states and 376 transitions. [2023-11-26 12:03:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:03:19,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2023-11-26 12:03:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:19,222 INFO L225 Difference]: With dead ends: 323 [2023-11-26 12:03:19,222 INFO L226 Difference]: Without dead ends: 322 [2023-11-26 12:03:19,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:19,236 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 116 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:19,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 234 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:03:19,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-26 12:03:19,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 291. [2023-11-26 12:03:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.5555555555555556) internal successors, (322), 268 states have internal predecessors, (322), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 12:03:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 362 transitions. [2023-11-26 12:03:19,258 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 362 transitions. Word has length 69 [2023-11-26 12:03:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:19,258 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 362 transitions. [2023-11-26 12:03:19,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:03:19,259 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 362 transitions. [2023-11-26 12:03:19,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-26 12:03:19,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:19,260 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:19,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:19,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:19,467 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:19,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:19,467 INFO L85 PathProgramCache]: Analyzing trace with hash 905802544, now seen corresponding path program 1 times [2023-11-26 12:03:19,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:19,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362002274] [2023-11-26 12:03:19,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:19,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:19,479 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:19,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211687014] [2023-11-26 12:03:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:19,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:19,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:19,481 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:19,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-26 12:03:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:19,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:03:19,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-26 12:03:19,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:19,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:19,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362002274] [2023-11-26 12:03:19,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:19,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211687014] [2023-11-26 12:03:19,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211687014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:19,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:19,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:03:19,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058897690] [2023-11-26 12:03:19,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:19,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:03:19,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:19,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:03:19,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:03:19,704 INFO L87 Difference]: Start difference. First operand 291 states and 362 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 12:03:19,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:19,959 INFO L93 Difference]: Finished difference Result 322 states and 374 transitions. [2023-11-26 12:03:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:03:19,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2023-11-26 12:03:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:19,962 INFO L225 Difference]: With dead ends: 322 [2023-11-26 12:03:19,963 INFO L226 Difference]: Without dead ends: 321 [2023-11-26 12:03:19,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:03:19,964 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 58 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:19,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 561 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 12:03:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-26 12:03:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 291. [2023-11-26 12:03:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.5458937198067633) internal successors, (320), 268 states have internal predecessors, (320), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 12:03:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 360 transitions. [2023-11-26 12:03:19,989 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 360 transitions. Word has length 70 [2023-11-26 12:03:19,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:19,989 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 360 transitions. [2023-11-26 12:03:19,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 12:03:19,990 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 360 transitions. [2023-11-26 12:03:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 12:03:19,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:19,991 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:20,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:20,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:20,194 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:20,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:20,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1984892085, now seen corresponding path program 1 times [2023-11-26 12:03:20,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:20,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138718950] [2023-11-26 12:03:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:20,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:20,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:20,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369523737] [2023-11-26 12:03:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:20,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:20,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:20,205 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:20,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-26 12:03:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:20,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:03:20,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 12:03:20,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:20,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:20,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138718950] [2023-11-26 12:03:20,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:20,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369523737] [2023-11-26 12:03:20,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369523737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:20,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:20,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:20,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735231559] [2023-11-26 12:03:20,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:20,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:03:20,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:20,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:03:20,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:20,347 INFO L87 Difference]: Start difference. First operand 291 states and 360 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:03:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:21,978 INFO L93 Difference]: Finished difference Result 313 states and 364 transitions. [2023-11-26 12:03:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:03:21,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2023-11-26 12:03:21,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:21,981 INFO L225 Difference]: With dead ends: 313 [2023-11-26 12:03:21,981 INFO L226 Difference]: Without dead ends: 311 [2023-11-26 12:03:21,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:21,982 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 67 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:21,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 341 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 12:03:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-26 12:03:22,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 291. [2023-11-26 12:03:22,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.5265700483091786) internal successors, (316), 268 states have internal predecessors, (316), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 12:03:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 356 transitions. [2023-11-26 12:03:22,006 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 356 transitions. Word has length 71 [2023-11-26 12:03:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:22,006 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 356 transitions. [2023-11-26 12:03:22,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:03:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 356 transitions. [2023-11-26 12:03:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-26 12:03:22,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:22,009 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:22,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:22,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:22,215 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:22,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:22,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1402112366, now seen corresponding path program 1 times [2023-11-26 12:03:22,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:22,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317541477] [2023-11-26 12:03:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:22,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:22,223 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:22,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089822378] [2023-11-26 12:03:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:22,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:22,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:22,225 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:22,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-26 12:03:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:22,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:03:22,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 12:03:22,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:22,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:22,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317541477] [2023-11-26 12:03:22,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:22,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089822378] [2023-11-26 12:03:22,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089822378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:22,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:22,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770001176] [2023-11-26 12:03:22,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:22,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:03:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:03:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:22,356 INFO L87 Difference]: Start difference. First operand 291 states and 356 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:03:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:23,727 INFO L93 Difference]: Finished difference Result 311 states and 360 transitions. [2023-11-26 12:03:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:03:23,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-11-26 12:03:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:23,730 INFO L225 Difference]: With dead ends: 311 [2023-11-26 12:03:23,731 INFO L226 Difference]: Without dead ends: 309 [2023-11-26 12:03:23,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:23,732 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 65 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:23,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 344 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 12:03:23,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-26 12:03:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 291. [2023-11-26 12:03:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.5072463768115942) internal successors, (312), 268 states have internal predecessors, (312), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 12:03:23,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 352 transitions. [2023-11-26 12:03:23,754 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 352 transitions. Word has length 72 [2023-11-26 12:03:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:23,754 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 352 transitions. [2023-11-26 12:03:23,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-26 12:03:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 352 transitions. [2023-11-26 12:03:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-26 12:03:23,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:23,756 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:23,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:23,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-26 12:03:23,962 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:23,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:23,963 INFO L85 PathProgramCache]: Analyzing trace with hash 291086520, now seen corresponding path program 1 times [2023-11-26 12:03:23,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:23,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758160200] [2023-11-26 12:03:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:23,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:23,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:23,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097604442] [2023-11-26 12:03:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:23,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:23,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:23,972 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:23,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-26 12:03:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:24,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:03:24,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-26 12:03:24,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-26 12:03:24,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:24,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758160200] [2023-11-26 12:03:24,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:24,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097604442] [2023-11-26 12:03:24,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097604442] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:03:24,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:03:24,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 12:03:24,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951206132] [2023-11-26 12:03:24,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:24,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 12:03:24,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:24,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 12:03:24,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:03:24,841 INFO L87 Difference]: Start difference. First operand 291 states and 352 transitions. Second operand has 11 states, 8 states have (on average 12.125) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-26 12:03:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:29,300 INFO L93 Difference]: Finished difference Result 362 states and 396 transitions. [2023-11-26 12:03:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:03:29,300 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 12.125) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 78 [2023-11-26 12:03:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:29,303 INFO L225 Difference]: With dead ends: 362 [2023-11-26 12:03:29,303 INFO L226 Difference]: Without dead ends: 361 [2023-11-26 12:03:29,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-26 12:03:29,304 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 277 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:29,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 422 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-26 12:03:29,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-26 12:03:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 307. [2023-11-26 12:03:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 222 states have (on average 1.527027027027027) internal successors, (339), 283 states have internal predecessors, (339), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 12:03:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 381 transitions. [2023-11-26 12:03:29,328 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 381 transitions. Word has length 78 [2023-11-26 12:03:29,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:29,328 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 381 transitions. [2023-11-26 12:03:29,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 12.125) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-26 12:03:29,329 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 381 transitions. [2023-11-26 12:03:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 12:03:29,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:29,330 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:29,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:29,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:29,536 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-26 12:03:29,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:29,537 INFO L85 PathProgramCache]: Analyzing trace with hash 433747667, now seen corresponding path program 1 times [2023-11-26 12:03:29,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:29,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314490660] [2023-11-26 12:03:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:29,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:29,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:03:29,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521257924] [2023-11-26 12:03:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:29,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:03:29,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:03:29,549 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:03:29,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dc03a0e-cf44-4dc9-9b35-9e4b1a2b05e6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-26 12:03:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:29,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:03:29,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 12:03:30,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:34,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:34,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314490660] [2023-11-26 12:03:34,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:03:34,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521257924] [2023-11-26 12:03:34,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521257924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:03:34,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:03:34,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-26 12:03:34,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288130134] [2023-11-26 12:03:34,832 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:34,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:03:34,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:34,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:03:34,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=76, Unknown=1, NotChecked=0, Total=110 [2023-11-26 12:03:34,833 INFO L87 Difference]: Start difference. First operand 307 states and 381 transitions. Second operand has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7)