./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench/ps6-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/ps6-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ --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 07abfb6a25bc8999c03b9e73c88de3af15c2169770f93c7bfb47efae6a8a30d3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:30:26,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:30:26,510 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:30:26,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:30:26,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:30:26,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:30:26,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:30:26,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:30:26,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:30:26,565 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:30:26,565 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:30:26,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:30:26,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:30:26,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:30:26,569 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:30:26,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:30:26,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:30:26,571 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:30:26,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:30:26,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:30:26,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:30:26,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:30:26,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:30:26,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:30:26,575 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:30:26,575 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:30:26,575 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:30:26,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:30:26,576 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:30:26,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:30:26,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:30:26,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:30:26,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:30:26,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:30:26,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:30:26,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:30:26,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:30:26,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:30:26,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:30:26,580 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:30:26,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:30:26,581 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:30:26,581 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:30:26,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:30:26,582 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_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07abfb6a25bc8999c03b9e73c88de3af15c2169770f93c7bfb47efae6a8a30d3 [2023-11-23 22:30:26,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:30:26,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:30:26,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:30:26,991 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:30:26,992 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:30:26,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/nla-digbench/ps6-ll.c [2023-11-23 22:30:30,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:30:30,304 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:30:30,305 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/sv-benchmarks/c/nla-digbench/ps6-ll.c [2023-11-23 22:30:30,314 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/data/c32b979b5/24575ff6781946799be7963c66cd1e2a/FLAGe2cecf6f3 [2023-11-23 22:30:30,330 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/data/c32b979b5/24575ff6781946799be7963c66cd1e2a [2023-11-23 22:30:30,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:30:30,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:30:30,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:30:30,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:30:30,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:30:30,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e13c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30, skipping insertion in model container [2023-11-23 22:30:30,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,376 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:30:30,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:30:30,576 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:30:30,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:30:30,617 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:30:30,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30 WrapperNode [2023-11-23 22:30:30,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:30:30,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:30:30,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:30:30,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:30:30,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,692 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 146 [2023-11-23 22:30:30,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:30:30,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:30:30,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:30:30,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:30:30,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,720 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,733 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:30:30,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,740 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:30:30,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:30:30,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:30:30,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:30:30,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (1/1) ... [2023-11-23 22:30:30,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:30:30,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:30,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:30:30,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:30:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:30:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:30:30,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:30:30,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:30:30,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 22:30:30,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 22:30:30,929 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:30:30,932 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:30:31,718 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:30:31,766 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:30:31,767 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:30:31,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:30:31 BoogieIcfgContainer [2023-11-23 22:30:31,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:30:31,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:30:31,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:30:31,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:30:31,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:30:30" (1/3) ... [2023-11-23 22:30:31,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b3cc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:30:31, skipping insertion in model container [2023-11-23 22:30:31,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:30" (2/3) ... [2023-11-23 22:30:31,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b3cc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:30:31, skipping insertion in model container [2023-11-23 22:30:31,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:30:31" (3/3) ... [2023-11-23 22:30:31,782 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll.c [2023-11-23 22:30:31,804 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:30:31,805 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 102 error locations. [2023-11-23 22:30:31,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:30:31,905 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;@3a79cf68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:30:31,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2023-11-23 22:30:31,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 218 states, 111 states have (on average 1.9639639639639639) internal successors, (218), 213 states have internal predecessors, (218), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:30:31,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 22:30:31,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:31,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 22:30:31,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:31,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash 267055809, now seen corresponding path program 1 times [2023-11-23 22:30:31,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:31,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635621634] [2023-11-23 22:30:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:31,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:32,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:32,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635621634] [2023-11-23 22:30:32,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635621634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:32,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:32,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:32,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644304399] [2023-11-23 22:30:32,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:32,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:30:32,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:32,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:30:32,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:30:32,177 INFO L87 Difference]: Start difference. First operand has 218 states, 111 states have (on average 1.9639639639639639) internal successors, (218), 213 states have internal predecessors, (218), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:30:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:32,228 INFO L93 Difference]: Finished difference Result 409 states and 448 transitions. [2023-11-23 22:30:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:30:32,231 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 22:30:32,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:32,241 INFO L225 Difference]: With dead ends: 409 [2023-11-23 22:30:32,241 INFO L226 Difference]: Without dead ends: 190 [2023-11-23 22:30:32,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:30:32,250 INFO L413 NwaCegarLoop]: 193 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, 193 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 [2023-11-23 22:30:32,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:30:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-23 22:30:32,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-11-23 22:30:32,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 110 states have (on average 1.7) internal successors, (187), 186 states have internal predecessors, (187), 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) [2023-11-23 22:30:32,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2023-11-23 22:30:32,320 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 5 [2023-11-23 22:30:32,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:32,321 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2023-11-23 22:30:32,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:30:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2023-11-23 22:30:32,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 22:30:32,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:32,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 22:30:32,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:30:32,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:32,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash 267115332, now seen corresponding path program 1 times [2023-11-23 22:30:32,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:32,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333440004] [2023-11-23 22:30:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:32,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:32,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:32,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333440004] [2023-11-23 22:30:32,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333440004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:32,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:32,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:32,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499752217] [2023-11-23 22:30:32,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:32,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:32,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:32,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:32,395 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:30:32,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:32,961 INFO L93 Difference]: Finished difference Result 355 states and 358 transitions. [2023-11-23 22:30:32,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:32,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 22:30:32,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:32,965 INFO L225 Difference]: With dead ends: 355 [2023-11-23 22:30:32,965 INFO L226 Difference]: Without dead ends: 291 [2023-11-23 22:30:32,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:32,968 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 102 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:32,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 124 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 22:30:32,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-23 22:30:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 281. [2023-11-23 22:30:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 200 states have (on average 1.435) internal successors, (287), 276 states have internal predecessors, (287), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:30:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 293 transitions. [2023-11-23 22:30:32,992 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 293 transitions. Word has length 5 [2023-11-23 22:30:32,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:32,992 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 293 transitions. [2023-11-23 22:30:32,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:30:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 293 transitions. [2023-11-23 22:30:32,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-23 22:30:32,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:32,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:32,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:30:32,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:32,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash 670383082, now seen corresponding path program 1 times [2023-11-23 22:30:32,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:32,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261293483] [2023-11-23 22:30:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:33,017 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:33,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287755735] [2023-11-23 22:30:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:33,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:33,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:33,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:33,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:30:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:33,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 22:30:33,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:33,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:33,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:33,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261293483] [2023-11-23 22:30:33,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:33,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287755735] [2023-11-23 22:30:33,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287755735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:33,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:33,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:33,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547198033] [2023-11-23 22:30:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:33,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:33,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:33,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:33,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:33,190 INFO L87 Difference]: Start difference. First operand 281 states and 293 transitions. Second operand has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:30:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:33,277 INFO L93 Difference]: Finished difference Result 305 states and 311 transitions. [2023-11-23 22:30:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:33,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-23 22:30:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:33,280 INFO L225 Difference]: With dead ends: 305 [2023-11-23 22:30:33,280 INFO L226 Difference]: Without dead ends: 303 [2023-11-23 22:30:33,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:33,282 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 76 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:33,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 342 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:30:33,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-23 22:30:33,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 281. [2023-11-23 22:30:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 200 states have (on average 1.425) internal successors, (285), 276 states have internal predecessors, (285), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:30:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 291 transitions. [2023-11-23 22:30:33,302 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 291 transitions. Word has length 43 [2023-11-23 22:30:33,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:33,303 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 291 transitions. [2023-11-23 22:30:33,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:30:33,303 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 291 transitions. [2023-11-23 22:30:33,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 22:30:33,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:33,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:33,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:33,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:33,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:33,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash -692960810, now seen corresponding path program 1 times [2023-11-23 22:30:33,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:33,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930961055] [2023-11-23 22:30:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:33,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:33,550 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:33,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414744696] [2023-11-23 22:30:33,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:33,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:33,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:33,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:33,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:30:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:33,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 22:30:33,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:33,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:33,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:33,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930961055] [2023-11-23 22:30:33,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414744696] [2023-11-23 22:30:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414744696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:33,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:33,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:33,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144193346] [2023-11-23 22:30:33,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:33,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:33,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:33,774 INFO L87 Difference]: Start difference. First operand 281 states and 291 transitions. Second operand has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:30:33,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:33,872 INFO L93 Difference]: Finished difference Result 307 states and 309 transitions. [2023-11-23 22:30:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:33,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-11-23 22:30:33,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:33,875 INFO L225 Difference]: With dead ends: 307 [2023-11-23 22:30:33,876 INFO L226 Difference]: Without dead ends: 302 [2023-11-23 22:30:33,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:33,877 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 71 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:33,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 346 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:30:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-23 22:30:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 280. [2023-11-23 22:30:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 199 states have (on average 1.407035175879397) internal successors, (280), 275 states have internal predecessors, (280), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:30:33,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 286 transitions. [2023-11-23 22:30:33,896 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 286 transitions. Word has length 44 [2023-11-23 22:30:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:33,897 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 286 transitions. [2023-11-23 22:30:33,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:30:33,897 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 286 transitions. [2023-11-23 22:30:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-23 22:30:33,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:33,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:33,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 22:30:34,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:34,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:34,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:34,113 INFO L85 PathProgramCache]: Analyzing trace with hash -6948500, now seen corresponding path program 1 times [2023-11-23 22:30:34,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:34,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179599100] [2023-11-23 22:30:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:34,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:34,130 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:34,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601127838] [2023-11-23 22:30:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:34,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:34,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:34,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:34,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:30:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:34,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:30:34,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:34,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:34,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:34,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179599100] [2023-11-23 22:30:34,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:34,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601127838] [2023-11-23 22:30:34,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601127838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:34,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:34,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:34,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70961387] [2023-11-23 22:30:34,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:34,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:34,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:34,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:34,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:34,394 INFO L87 Difference]: Start difference. First operand 280 states and 286 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:30:34,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:34,688 INFO L93 Difference]: Finished difference Result 302 states and 304 transitions. [2023-11-23 22:30:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:34,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-23 22:30:34,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:34,691 INFO L225 Difference]: With dead ends: 302 [2023-11-23 22:30:34,692 INFO L226 Difference]: Without dead ends: 259 [2023-11-23 22:30:34,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:34,693 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 153 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:34,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 271 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:30:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-23 22:30:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 239. [2023-11-23 22:30:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 158 states have (on average 1.5) internal successors, (237), 234 states have internal predecessors, (237), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:30:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 243 transitions. [2023-11-23 22:30:34,712 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 243 transitions. Word has length 45 [2023-11-23 22:30:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:34,715 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 243 transitions. [2023-11-23 22:30:34,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:30:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 243 transitions. [2023-11-23 22:30:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 22:30:34,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:34,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:34,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:34,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:34,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:34,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:34,925 INFO L85 PathProgramCache]: Analyzing trace with hash -59967443, now seen corresponding path program 1 times [2023-11-23 22:30:34,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:34,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784460525] [2023-11-23 22:30:34,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:34,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:34,944 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:34,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789132954] [2023-11-23 22:30:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:34,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:34,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:34,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:34,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:30:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:35,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 22:30:35,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:35,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:35,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:35,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784460525] [2023-11-23 22:30:35,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:35,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789132954] [2023-11-23 22:30:35,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789132954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:35,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:35,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:35,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030890558] [2023-11-23 22:30:35,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:35,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:35,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:35,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:35,093 INFO L87 Difference]: Start difference. First operand 239 states and 243 transitions. Second operand has 3 states, 2 states have (on average 25.5) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:35,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:35,108 INFO L93 Difference]: Finished difference Result 239 states and 243 transitions. [2023-11-23 22:30:35,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:35,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 25.5) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2023-11-23 22:30:35,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:35,110 INFO L225 Difference]: With dead ends: 239 [2023-11-23 22:30:35,110 INFO L226 Difference]: Without dead ends: 238 [2023-11-23 22:30:35,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:35,111 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 135 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:35,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 190 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:30:35,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-23 22:30:35,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-11-23 22:30:35,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 158 states have (on average 1.4873417721518987) internal successors, (235), 233 states have internal predecessors, (235), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:30:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 241 transitions. [2023-11-23 22:30:35,122 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 241 transitions. Word has length 53 [2023-11-23 22:30:35,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:35,123 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 241 transitions. [2023-11-23 22:30:35,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 25.5) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:35,123 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 241 transitions. [2023-11-23 22:30:35,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 22:30:35,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:35,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:35,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 22:30:35,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:35,345 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:35,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:35,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1858990591, now seen corresponding path program 1 times [2023-11-23 22:30:35,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:35,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043914193] [2023-11-23 22:30:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:35,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:35,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:35,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064140618] [2023-11-23 22:30:35,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:35,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:35,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:35,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:35,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:30:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:35,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 22:30:35,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:35,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:35,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043914193] [2023-11-23 22:30:35,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064140618] [2023-11-23 22:30:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064140618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:35,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:35,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:35,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627149581] [2023-11-23 22:30:35,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:35,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:35,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:35,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:35,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:35,502 INFO L87 Difference]: Start difference. First operand 238 states and 241 transitions. Second operand has 3 states, 2 states have (on average 26.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:35,533 INFO L93 Difference]: Finished difference Result 239 states and 241 transitions. [2023-11-23 22:30:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:35,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2023-11-23 22:30:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:35,535 INFO L225 Difference]: With dead ends: 239 [2023-11-23 22:30:35,536 INFO L226 Difference]: Without dead ends: 238 [2023-11-23 22:30:35,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:35,537 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:35,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:30:35,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-23 22:30:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-11-23 22:30:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 158 states have (on average 1.481012658227848) internal successors, (234), 233 states have internal predecessors, (234), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:30:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 240 transitions. [2023-11-23 22:30:35,548 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 240 transitions. Word has length 54 [2023-11-23 22:30:35,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:35,548 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 240 transitions. [2023-11-23 22:30:35,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 240 transitions. [2023-11-23 22:30:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 22:30:35,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:35,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:35,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:35,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-23 22:30:35,764 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:35,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:35,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1842139525, now seen corresponding path program 1 times [2023-11-23 22:30:35,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:35,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188814965] [2023-11-23 22:30:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:35,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:35,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:35,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414979936] [2023-11-23 22:30:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:35,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:35,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:35,791 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:35,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:30:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:35,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:30:35,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:35,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:35,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:35,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188814965] [2023-11-23 22:30:35,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:35,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414979936] [2023-11-23 22:30:35,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414979936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:35,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:35,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:35,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440623356] [2023-11-23 22:30:35,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:35,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:35,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:35,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:35,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:35,934 INFO L87 Difference]: Start difference. First operand 238 states and 240 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:36,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:36,445 INFO L93 Difference]: Finished difference Result 420 states and 424 transitions. [2023-11-23 22:30:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:36,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-11-23 22:30:36,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:36,448 INFO L225 Difference]: With dead ends: 420 [2023-11-23 22:30:36,449 INFO L226 Difference]: Without dead ends: 355 [2023-11-23 22:30:36,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:36,450 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 115 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:36,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 137 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 22:30:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-23 22:30:36,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 342. [2023-11-23 22:30:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 260 states have (on average 1.3423076923076922) internal successors, (349), 335 states have internal predecessors, (349), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:30:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 359 transitions. [2023-11-23 22:30:36,467 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 359 transitions. Word has length 58 [2023-11-23 22:30:36,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:36,467 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 359 transitions. [2023-11-23 22:30:36,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 359 transitions. [2023-11-23 22:30:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 22:30:36,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:36,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:36,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 22:30:36,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:36,690 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:36,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash -89100487, now seen corresponding path program 1 times [2023-11-23 22:30:36,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:36,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997545345] [2023-11-23 22:30:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:36,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:36,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:36,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27057221] [2023-11-23 22:30:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:36,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:36,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:36,706 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:36,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 22:30:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:36,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:30:36,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:36,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:36,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:36,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997545345] [2023-11-23 22:30:36,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:36,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27057221] [2023-11-23 22:30:36,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27057221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:36,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:36,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:36,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268836617] [2023-11-23 22:30:36,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:36,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:36,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:36,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:36,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:36,861 INFO L87 Difference]: Start difference. First operand 342 states and 359 transitions. Second operand has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:36,979 INFO L93 Difference]: Finished difference Result 344 states and 359 transitions. [2023-11-23 22:30:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:36,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2023-11-23 22:30:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:36,983 INFO L225 Difference]: With dead ends: 344 [2023-11-23 22:30:36,983 INFO L226 Difference]: Without dead ends: 343 [2023-11-23 22:30:36,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:36,986 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 57 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:36,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 302 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:30:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-23 22:30:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 342. [2023-11-23 22:30:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 260 states have (on average 1.3384615384615384) internal successors, (348), 335 states have internal predecessors, (348), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:30:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 358 transitions. [2023-11-23 22:30:37,003 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 358 transitions. Word has length 65 [2023-11-23 22:30:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:37,003 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 358 transitions. [2023-11-23 22:30:37,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 358 transitions. [2023-11-23 22:30:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 22:30:37,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:37,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:37,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:37,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:37,227 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:37,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1532852365, now seen corresponding path program 1 times [2023-11-23 22:30:37,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:37,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785388096] [2023-11-23 22:30:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:37,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:37,239 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:37,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493943150] [2023-11-23 22:30:37,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:37,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:37,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:37,241 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:37,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 22:30:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:37,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:30:37,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:37,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:37,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785388096] [2023-11-23 22:30:37,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:37,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493943150] [2023-11-23 22:30:37,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493943150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:37,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:37,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:37,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727497013] [2023-11-23 22:30:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:37,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:37,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:37,415 INFO L87 Difference]: Start difference. First operand 342 states and 358 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:39,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-23 22:30:39,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:39,847 INFO L93 Difference]: Finished difference Result 343 states and 358 transitions. [2023-11-23 22:30:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:39,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2023-11-23 22:30:39,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:39,850 INFO L225 Difference]: With dead ends: 343 [2023-11-23 22:30:39,850 INFO L226 Difference]: Without dead ends: 342 [2023-11-23 22:30:39,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:39,851 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 47 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:39,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 325 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 240 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 22:30:39,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-23 22:30:39,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2023-11-23 22:30:39,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 260 states have (on average 1.3346153846153845) internal successors, (347), 335 states have internal predecessors, (347), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:30:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 357 transitions. [2023-11-23 22:30:39,865 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 357 transitions. Word has length 66 [2023-11-23 22:30:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:39,866 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 357 transitions. [2023-11-23 22:30:39,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 357 transitions. [2023-11-23 22:30:39,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-23 22:30:39,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:39,868 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:39,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:40,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 22:30:40,081 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:40,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:40,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1125027765, now seen corresponding path program 1 times [2023-11-23 22:30:40,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:40,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859269967] [2023-11-23 22:30:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:40,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:40,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:40,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552271197] [2023-11-23 22:30:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:40,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:40,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:40,100 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:40,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 22:30:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:40,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 22:30:40,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:40,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:30:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:40,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:40,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859269967] [2023-11-23 22:30:40,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:40,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552271197] [2023-11-23 22:30:40,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552271197] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:30:40,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:30:40,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-23 22:30:40,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111324238] [2023-11-23 22:30:40,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:30:40,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:30:40,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:40,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:30:40,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:30:40,863 INFO L87 Difference]: Start difference. First operand 342 states and 357 transitions. Second operand has 8 states, 7 states have (on average 29.0) internal successors, (203), 8 states have internal predecessors, (203), 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) [2023-11-23 22:30:41,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:41,966 INFO L93 Difference]: Finished difference Result 368 states and 375 transitions. [2023-11-23 22:30:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:30:41,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 29.0) internal successors, (203), 8 states have internal predecessors, (203), 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 106 [2023-11-23 22:30:41,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:41,969 INFO L225 Difference]: With dead ends: 368 [2023-11-23 22:30:41,969 INFO L226 Difference]: Without dead ends: 359 [2023-11-23 22:30:41,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:30:41,970 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 461 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:41,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 124 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 22:30:41,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-23 22:30:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 346. [2023-11-23 22:30:41,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 267 states have (on average 1.303370786516854) internal successors, (348), 339 states have internal predecessors, (348), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:30:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 358 transitions. [2023-11-23 22:30:41,985 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 358 transitions. Word has length 106 [2023-11-23 22:30:41,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:41,986 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 358 transitions. [2023-11-23 22:30:41,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 29.0) internal successors, (203), 8 states have internal predecessors, (203), 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) [2023-11-23 22:30:41,986 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 358 transitions. [2023-11-23 22:30:41,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 22:30:41,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:41,988 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:42,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:42,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:42,204 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:42,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:42,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1180072329, now seen corresponding path program 1 times [2023-11-23 22:30:42,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:42,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197275372] [2023-11-23 22:30:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:42,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:42,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:42,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038292348] [2023-11-23 22:30:42,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:42,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:42,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:42,239 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:42,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 22:30:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:42,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 22:30:42,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:42,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:30:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 22:30:43,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:43,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197275372] [2023-11-23 22:30:43,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:43,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038292348] [2023-11-23 22:30:43,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038292348] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 22:30:43,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:30:43,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-23 22:30:43,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149043601] [2023-11-23 22:30:43,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:43,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:43,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:43,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:43,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:30:43,252 INFO L87 Difference]: Start difference. First operand 346 states and 358 transitions. Second operand has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:43,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:43,963 INFO L93 Difference]: Finished difference Result 346 states and 358 transitions. [2023-11-23 22:30:43,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:30:43,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2023-11-23 22:30:43,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:43,966 INFO L225 Difference]: With dead ends: 346 [2023-11-23 22:30:43,966 INFO L226 Difference]: Without dead ends: 344 [2023-11-23 22:30:43,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:30:43,967 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 164 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:43,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 33 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 22:30:43,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-11-23 22:30:43,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2023-11-23 22:30:43,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 267 states have (on average 1.2883895131086143) internal successors, (344), 337 states have internal predecessors, (344), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:30:43,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 354 transitions. [2023-11-23 22:30:43,987 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 354 transitions. Word has length 108 [2023-11-23 22:30:43,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:43,987 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 354 transitions. [2023-11-23 22:30:43,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.666666666666668) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 354 transitions. [2023-11-23 22:30:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 22:30:43,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:43,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:44,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:44,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 22:30:44,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:44,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:44,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1861549398, now seen corresponding path program 1 times [2023-11-23 22:30:44,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:44,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296078707] [2023-11-23 22:30:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:44,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:44,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:44,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459352724] [2023-11-23 22:30:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:44,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:44,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:44,236 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:44,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 22:30:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:44,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:30:44,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 22:30:44,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:30:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 22:30:44,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:44,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296078707] [2023-11-23 22:30:44,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:44,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459352724] [2023-11-23 22:30:44,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459352724] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:30:44,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:30:44,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-23 22:30:44,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190384021] [2023-11-23 22:30:44,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:30:44,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:30:44,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:44,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:30:44,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:30:44,681 INFO L87 Difference]: Start difference. First operand 344 states and 354 transitions. Second operand has 6 states, 5 states have (on average 43.0) internal successors, (215), 6 states have internal predecessors, (215), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:30:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:44,765 INFO L93 Difference]: Finished difference Result 686 states and 696 transitions. [2023-11-23 22:30:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:30:44,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 43.0) internal successors, (215), 6 states have internal predecessors, (215), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 117 [2023-11-23 22:30:44,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:44,770 INFO L225 Difference]: With dead ends: 686 [2023-11-23 22:30:44,770 INFO L226 Difference]: Without dead ends: 685 [2023-11-23 22:30:44,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:30:44,772 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 332 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:44,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 800 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:30:44,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-11-23 22:30:44,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 453. [2023-11-23 22:30:44,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 374 states have (on average 1.393048128342246) internal successors, (521), 444 states have internal predecessors, (521), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 22:30:44,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 535 transitions. [2023-11-23 22:30:44,801 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 535 transitions. Word has length 117 [2023-11-23 22:30:44,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:44,802 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 535 transitions. [2023-11-23 22:30:44,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 43.0) internal successors, (215), 6 states have internal predecessors, (215), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:30:44,802 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 535 transitions. [2023-11-23 22:30:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 22:30:44,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:44,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:44,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:45,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 22:30:45,024 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:45,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash -953282982, now seen corresponding path program 1 times [2023-11-23 22:30:45,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:45,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826168943] [2023-11-23 22:30:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:45,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:45,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:45,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317201805] [2023-11-23 22:30:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:45,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:45,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:45,043 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:45,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 22:30:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:45,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 22:30:45,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 22:30:45,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:30:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 22:30:45,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826168943] [2023-11-23 22:30:45,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:45,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317201805] [2023-11-23 22:30:45,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317201805] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:30:45,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:30:45,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-23 22:30:45,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951161282] [2023-11-23 22:30:45,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:30:45,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:30:45,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:45,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:30:45,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:30:45,650 INFO L87 Difference]: Start difference. First operand 453 states and 535 transitions. Second operand has 8 states, 7 states have (on average 31.857142857142858) internal successors, (223), 8 states have internal predecessors, (223), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:30:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:46,498 INFO L93 Difference]: Finished difference Result 553 states and 614 transitions. [2023-11-23 22:30:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:30:46,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 31.857142857142858) internal successors, (223), 8 states have internal predecessors, (223), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 121 [2023-11-23 22:30:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:46,502 INFO L225 Difference]: With dead ends: 553 [2023-11-23 22:30:46,502 INFO L226 Difference]: Without dead ends: 488 [2023-11-23 22:30:46,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:30:46,503 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 587 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:46,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 135 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 22:30:46,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-23 22:30:46,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 467. [2023-11-23 22:30:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 407 states have (on average 1.2137592137592137) internal successors, (494), 459 states have internal predecessors, (494), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 22:30:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 506 transitions. [2023-11-23 22:30:46,529 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 506 transitions. Word has length 121 [2023-11-23 22:30:46,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:46,530 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 506 transitions. [2023-11-23 22:30:46,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 31.857142857142858) internal successors, (223), 8 states have internal predecessors, (223), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:30:46,531 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 506 transitions. [2023-11-23 22:30:46,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-23 22:30:46,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:46,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 22:30:46,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:46,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 22:30:46,752 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2023-11-23 22:30:46,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash 716378210, now seen corresponding path program 1 times [2023-11-23 22:30:46,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:46,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277099422] [2023-11-23 22:30:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:46,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:46,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:46,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814109305] [2023-11-23 22:30:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:46,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:46,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:46,770 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:46,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40489455-2554-4d5d-898f-43700e2fea31/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 22:30:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:46,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 22:30:46,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:30:47,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:31:12,182 WARN L293 SmtUtils]: Spent 9.20s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)