./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-87.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-87.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu --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 983db8b9d7b8c1a6cf88f0ccf9f67454cabc986e490bff9f0d35f6b76f68db9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:45,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:46,062 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:45:46,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:46,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:46,095 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:46,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:46,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:46,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:46,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:46,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:46,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:46,099 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:46,100 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:46,101 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:45:46,101 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:46,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:46,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:46,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:46,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:45:46,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:46,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:45:46,111 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:46,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:45:46,112 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:46,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:46,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:46,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:46,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:46,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:46,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:46,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:45:46,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:46,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:46,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:46,116 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:45:46,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:46,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:46,117 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:46,118 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_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 983db8b9d7b8c1a6cf88f0ccf9f67454cabc986e490bff9f0d35f6b76f68db9d [2023-11-19 07:45:46,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:46,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:46,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:46,426 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:46,427 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:46,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-87.i [2023-11-19 07:45:49,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:49,796 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:49,797 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-87.i [2023-11-19 07:45:49,809 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/data/2779fc646/ae7def1adf754bac87b4756bb8e8c79e/FLAG7ce6757a2 [2023-11-19 07:45:49,824 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/data/2779fc646/ae7def1adf754bac87b4756bb8e8c79e [2023-11-19 07:45:49,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:49,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:49,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:49,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:49,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:49,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:49" (1/1) ... [2023-11-19 07:45:49,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fff17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:49, skipping insertion in model container [2023-11-19 07:45:49,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:49" (1/1) ... [2023-11-19 07:45:49,886 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:50,045 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_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-87.i[916,929] [2023-11-19 07:45:50,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:50,164 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:50,177 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_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-87.i[916,929] [2023-11-19 07:45:50,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:50,282 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:50,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50 WrapperNode [2023-11-19 07:45:50,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:50,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:50,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:50,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:50,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (1/1) ... [2023-11-19 07:45:50,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (1/1) ... [2023-11-19 07:45:50,376 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 216 [2023-11-19 07:45:50,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:50,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:50,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:50,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:50,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (1/1) ... [2023-11-19 07:45:50,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (1/1) ... [2023-11-19 07:45:50,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (1/1) ... [2023-11-19 07:45:50,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (1/1) ... [2023-11-19 07:45:50,412 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (1/1) ... [2023-11-19 07:45:50,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (1/1) ... [2023-11-19 07:45:50,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (1/1) ... [2023-11-19 07:45:50,425 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (1/1) ... [2023-11-19 07:45:50,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:50,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:50,433 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:50,433 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:50,434 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (1/1) ... [2023-11-19 07:45:50,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:50,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:50,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:50,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:45:50,537 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:45:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:50,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:50,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:50,661 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:50,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:51,366 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:51,376 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:51,376 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:45:51,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:51 BoogieIcfgContainer [2023-11-19 07:45:51,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:51,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:51,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:51,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:51,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:49" (1/3) ... [2023-11-19 07:45:51,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90b58a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:51, skipping insertion in model container [2023-11-19 07:45:51,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:50" (2/3) ... [2023-11-19 07:45:51,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90b58a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:51, skipping insertion in model container [2023-11-19 07:45:51,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:51" (3/3) ... [2023-11-19 07:45:51,401 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-87.i [2023-11-19 07:45:51,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:51,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:45:51,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:51,510 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;@540eaca8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:51,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:45:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 56 states have internal predecessors, (75), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-19 07:45:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-19 07:45:51,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:51,545 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:51,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:51,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:51,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1518696061, now seen corresponding path program 1 times [2023-11-19 07:45:51,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:51,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430613827] [2023-11-19 07:45:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:51,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:51,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:51,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430613827] [2023-11-19 07:45:51,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:45:51,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961653858] [2023-11-19 07:45:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:51,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:51,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:51,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:51,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:45:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:52,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:45:52,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-11-19 07:45:52,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:45:52,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961653858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:52,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:52,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:52,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472973011] [2023-11-19 07:45:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:52,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:45:52,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:52,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:45:52,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:52,460 INFO L87 Difference]: Start difference. First operand has 92 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 56 states have internal predecessors, (75), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-19 07:45:52,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:52,538 INFO L93 Difference]: Finished difference Result 177 states and 314 transitions. [2023-11-19 07:45:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:45:52,541 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 213 [2023-11-19 07:45:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:52,554 INFO L225 Difference]: With dead ends: 177 [2023-11-19 07:45:52,555 INFO L226 Difference]: Without dead ends: 88 [2023-11-19 07:45:52,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:52,569 INFO L413 NwaCegarLoop]: 136 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, 136 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 [2023-11-19 07:45:52,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-19 07:45:52,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-11-19 07:45:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-19 07:45:52,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 136 transitions. [2023-11-19 07:45:52,624 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 136 transitions. Word has length 213 [2023-11-19 07:45:52,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:52,625 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 136 transitions. [2023-11-19 07:45:52,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-11-19 07:45:52,626 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 136 transitions. [2023-11-19 07:45:52,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-19 07:45:52,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:52,632 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:52,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:52,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:52,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:52,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash 268510907, now seen corresponding path program 1 times [2023-11-19 07:45:52,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:52,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263542875] [2023-11-19 07:45:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:52,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:52,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:52,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101364253] [2023-11-19 07:45:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:52,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:52,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:52,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:53,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:45:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:53,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:45:53,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1143 proven. 54 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2023-11-19 07:45:53,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 45 proven. 54 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-11-19 07:45:53,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:53,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263542875] [2023-11-19 07:45:53,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:53,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101364253] [2023-11-19 07:45:53,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101364253] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:53,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:53,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:45:53,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861338430] [2023-11-19 07:45:53,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:53,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:45:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:53,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:45:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:53,820 INFO L87 Difference]: Start difference. First operand 88 states and 136 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-11-19 07:45:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:54,155 INFO L93 Difference]: Finished difference Result 181 states and 276 transitions. [2023-11-19 07:45:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:45:54,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 213 [2023-11-19 07:45:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:54,161 INFO L225 Difference]: With dead ends: 181 [2023-11-19 07:45:54,161 INFO L226 Difference]: Without dead ends: 96 [2023-11-19 07:45:54,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 418 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:45:54,164 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 68 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:54,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 221 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:45:54,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-19 07:45:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2023-11-19 07:45:54,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-19 07:45:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 138 transitions. [2023-11-19 07:45:54,189 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 138 transitions. Word has length 213 [2023-11-19 07:45:54,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:54,190 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 138 transitions. [2023-11-19 07:45:54,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (52), 2 states have call predecessors, (52), 4 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2023-11-19 07:45:54,191 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 138 transitions. [2023-11-19 07:45:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-19 07:45:54,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:54,196 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:54,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:54,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:54,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:54,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:54,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1319836995, now seen corresponding path program 1 times [2023-11-19 07:45:54,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:54,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322575478] [2023-11-19 07:45:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:54,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:54,467 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:54,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520109543] [2023-11-19 07:45:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:54,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:54,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:54,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:54,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:45:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:54,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:45:54,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1229 proven. 60 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2023-11-19 07:45:55,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 132 proven. 63 refuted. 0 times theorem prover too weak. 2049 trivial. 0 not checked. [2023-11-19 07:45:55,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:55,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322575478] [2023-11-19 07:45:55,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:45:55,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520109543] [2023-11-19 07:45:55,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520109543] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:55,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:55,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-11-19 07:45:55,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780222856] [2023-11-19 07:45:55,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:55,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:45:55,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:55,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:45:55,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:45:55,578 INFO L87 Difference]: Start difference. First operand 92 states and 138 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 4 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2023-11-19 07:45:56,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:56,734 INFO L93 Difference]: Finished difference Result 304 states and 442 transitions. [2023-11-19 07:45:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 07:45:56,735 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 4 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) Word has length 213 [2023-11-19 07:45:56,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:56,739 INFO L225 Difference]: With dead ends: 304 [2023-11-19 07:45:56,739 INFO L226 Difference]: Without dead ends: 215 [2023-11-19 07:45:56,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 409 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 07:45:56,742 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 276 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:56,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 539 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:45:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-19 07:45:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 184. [2023-11-19 07:45:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 110 states have (on average 1.2272727272727273) internal successors, (135), 111 states have internal predecessors, (135), 66 states have call successors, (66), 7 states have call predecessors, (66), 7 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-19 07:45:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 267 transitions. [2023-11-19 07:45:56,786 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 267 transitions. Word has length 213 [2023-11-19 07:45:56,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:56,788 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 267 transitions. [2023-11-19 07:45:56,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 4 states have call successors, (54), 3 states have call predecessors, (54), 7 states have return successors, (55), 4 states have call predecessors, (55), 4 states have call successors, (55) [2023-11-19 07:45:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 267 transitions. [2023-11-19 07:45:56,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-19 07:45:56,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:56,793 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:56,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:57,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:45:57,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:57,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:57,016 INFO L85 PathProgramCache]: Analyzing trace with hash 980985595, now seen corresponding path program 1 times [2023-11-19 07:45:57,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:57,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708111300] [2023-11-19 07:45:57,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:57,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:57,088 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:45:57,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418910621] [2023-11-19 07:45:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:57,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:57,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:57,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:57,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0e6ae-2cd5-48a8-bb12-9675e223e733/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:45:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:57,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-19 07:45:57,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1706 proven. 300 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-19 07:46:07,941 INFO L327 TraceCheckSpWp]: Computing backward predicates...