./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-45.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 294b7dcc801896cc0c4607275b340e3835112c15aaaacb8b365f279b8e190761 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:49,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:49,498 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:06:49,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:49,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:49,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:49,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:49,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:49,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:49,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:49,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:49,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:49,561 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:49,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:49,564 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:49,564 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:49,565 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:49,565 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:49,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:49,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:49,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:49,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:49,568 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:49,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:49,568 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:49,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:49,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:49,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:49,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:49,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:49,573 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:49,573 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:49,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:49,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:49,574 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:49,574 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:49,574 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:49,574 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:49,575 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:49,575 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_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 294b7dcc801896cc0c4607275b340e3835112c15aaaacb8b365f279b8e190761 [2023-11-12 02:06:49,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:49,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:49,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:49,898 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:49,898 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:49,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-45.i [2023-11-12 02:06:53,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:53,232 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:53,232 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-45.i [2023-11-12 02:06:53,242 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/data/f4f42c377/9f7f03860ff5402aad41f81f8ac62ce1/FLAG8c6dd0f6e [2023-11-12 02:06:53,257 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/data/f4f42c377/9f7f03860ff5402aad41f81f8ac62ce1 [2023-11-12 02:06:53,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:53,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:53,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:53,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:53,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:53,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3f2396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53, skipping insertion in model container [2023-11-12 02:06:53,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,301 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:53,502 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-45.i[916,929] [2023-11-12 02:06:53,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:53,615 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:53,628 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-45.i[916,929] [2023-11-12 02:06:53,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:53,705 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:53,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53 WrapperNode [2023-11-12 02:06:53,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:53,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:53,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:53,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:53,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,788 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 142 [2023-11-12 02:06:53,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:53,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:53,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:53,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:53,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:53,853 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:53,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:53,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:53,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (1/1) ... [2023-11-12 02:06:53,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:53,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:53,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:53,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:06:53,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:06:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:53,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:54,030 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:54,032 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:06:54,473 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:06:54,484 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:06:54,484 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:06:54,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:54 BoogieIcfgContainer [2023-11-12 02:06:54,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:06:54,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:06:54,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:06:54,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:06:54,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:53" (1/3) ... [2023-11-12 02:06:54,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47131460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:54, skipping insertion in model container [2023-11-12 02:06:54,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:53" (2/3) ... [2023-11-12 02:06:54,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47131460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:54, skipping insertion in model container [2023-11-12 02:06:54,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:54" (3/3) ... [2023-11-12 02:06:54,500 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-45.i [2023-11-12 02:06:54,521 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:06:54,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:06:54,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:06:54,599 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;@40e142b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:06:54,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:06:54,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 36 states have internal predecessors, (45), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-12 02:06:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-12 02:06:54,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:54,631 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:54,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:54,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1441036521, now seen corresponding path program 1 times [2023-11-12 02:06:54,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:54,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927123755] [2023-11-12 02:06:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:54,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:54,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:54,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927123755] [2023-11-12 02:06:54,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:06:54,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652787193] [2023-11-12 02:06:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:54,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:54,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:54,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:54,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:06:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:55,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:06:55,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2023-11-12 02:06:55,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:55,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652787193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:55,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:06:55,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803219833] [2023-11-12 02:06:55,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:55,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:06:55,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:06:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:06:55,398 INFO L87 Difference]: Start difference. First operand has 67 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 36 states have internal predecessors, (45), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-12 02:06:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:55,462 INFO L93 Difference]: Finished difference Result 127 states and 229 transitions. [2023-11-12 02:06:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:06:55,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) Word has length 172 [2023-11-12 02:06:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:55,475 INFO L225 Difference]: With dead ends: 127 [2023-11-12 02:06:55,475 INFO L226 Difference]: Without dead ends: 63 [2023-11-12 02:06:55,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:06:55,485 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:55,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-12 02:06:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-12 02:06:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-12 02:06:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 95 transitions. [2023-11-12 02:06:55,546 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 95 transitions. Word has length 172 [2023-11-12 02:06:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:55,547 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 95 transitions. [2023-11-12 02:06:55,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-11-12 02:06:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 95 transitions. [2023-11-12 02:06:55,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-12 02:06:55,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:55,552 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:55,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:55,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:06:55,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:55,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:55,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1143112326, now seen corresponding path program 1 times [2023-11-12 02:06:55,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:55,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890016299] [2023-11-12 02:06:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:55,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:55,889 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:06:55,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530566936] [2023-11-12 02:06:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:55,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:55,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:55,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:55,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:06:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:06:56,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 899 proven. 69 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2023-11-12 02:06:56,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:06:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 93 proven. 72 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2023-11-12 02:06:57,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:57,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890016299] [2023-11-12 02:06:57,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:06:57,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530566936] [2023-11-12 02:06:57,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530566936] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:06:57,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:06:57,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-12 02:06:57,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908491451] [2023-11-12 02:06:57,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:06:57,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 02:06:57,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:57,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 02:06:57,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:06:57,173 INFO L87 Difference]: Start difference. First operand 63 states and 95 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (42), 3 states have call predecessors, (42), 7 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2023-11-12 02:06:58,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:58,784 INFO L93 Difference]: Finished difference Result 284 states and 405 transitions. [2023-11-12 02:06:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-12 02:06:58,787 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (42), 3 states have call predecessors, (42), 7 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 173 [2023-11-12 02:06:58,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:58,792 INFO L225 Difference]: With dead ends: 284 [2023-11-12 02:06:58,792 INFO L226 Difference]: Without dead ends: 224 [2023-11-12 02:06:58,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 334 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=578, Invalid=1584, Unknown=0, NotChecked=0, Total=2162 [2023-11-12 02:06:58,796 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 224 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:58,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 450 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 02:06:58,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-12 02:06:58,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 72. [2023-11-12 02:06:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-12 02:06:58,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 102 transitions. [2023-11-12 02:06:58,834 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 102 transitions. Word has length 173 [2023-11-12 02:06:58,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:58,839 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 102 transitions. [2023-11-12 02:06:58,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 3 states have call successors, (42), 3 states have call predecessors, (42), 7 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2023-11-12 02:06:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 102 transitions. [2023-11-12 02:06:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-12 02:06:58,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:58,843 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:58,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 02:06:59,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:59,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:59,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:59,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1144959368, now seen corresponding path program 1 times [2023-11-12 02:06:59,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:59,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059168943] [2023-11-12 02:06:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:59,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:59,105 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:06:59,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700200206] [2023-11-12 02:06:59,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:59,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:59,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:59,107 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:59,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9089678c-d5ea-4c14-8f10-ea919b9589b4/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:06:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:59,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-12 02:06:59,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 135 proven. 84 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2023-11-12 02:07:22,430 INFO L327 TraceCheckSpWp]: Computing backward predicates...