./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/neural-networks/cartpole_92_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/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_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/neural-networks/cartpole_92_safe.c-amalgamation.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/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_b129fe1a-aff4-4d93-a98e-545f336a0042/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 4e5a617c0a379f925027f5036faf7a534daf9af0397b0a1cbe8b3ad005abc899 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:44:50,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:44:50,663 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:44:50,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:44:50,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:44:50,734 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:44:50,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:44:50,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:44:50,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:44:50,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:44:50,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:44:50,740 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:44:50,740 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:44:50,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:44:50,742 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:44:50,743 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:44:50,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:44:50,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:44:50,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:44:50,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:44:50,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:44:50,747 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:44:50,747 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:44:50,748 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:44:50,749 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:44:50,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:44:50,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:44:50,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:44:50,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:50,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:44:50,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:44:50,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:44:50,768 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:44:50,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:44:50,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:44:50,769 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:44:50,769 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:44:50,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:44:50,770 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:44:50,770 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_b129fe1a-aff4-4d93-a98e-545f336a0042/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e5a617c0a379f925027f5036faf7a534daf9af0397b0a1cbe8b3ad005abc899 [2023-11-19 07:44:51,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:44:51,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:44:51,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:44:51,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:44:51,206 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:44:51,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/neural-networks/cartpole_92_safe.c-amalgamation.i [2023-11-19 07:44:54,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:44:55,101 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:44:55,101 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/sv-benchmarks/c/neural-networks/cartpole_92_safe.c-amalgamation.i [2023-11-19 07:44:55,135 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/data/f9c6cc651/c97769c928c1479da5f36aec9e9746dd/FLAG5803cd8d1 [2023-11-19 07:44:55,162 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/data/f9c6cc651/c97769c928c1479da5f36aec9e9746dd [2023-11-19 07:44:55,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:44:55,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:44:55,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:55,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:44:55,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:44:55,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:55" (1/1) ... [2023-11-19 07:44:55,186 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f144870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:55, skipping insertion in model container [2023-11-19 07:44:55,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:44:55" (1/1) ... [2023-11-19 07:44:55,303 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:44:55,600 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:44:56,689 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_b129fe1a-aff4-4d93-a98e-545f336a0042/sv-benchmarks/c/neural-networks/cartpole_92_safe.c-amalgamation.i[63697,63710] [2023-11-19 07:44:56,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:57,210 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:44:57,247 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:44:57,284 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_b129fe1a-aff4-4d93-a98e-545f336a0042/sv-benchmarks/c/neural-networks/cartpole_92_safe.c-amalgamation.i[63697,63710] [2023-11-19 07:44:57,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:44:57,845 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:44:57,854 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:44:57,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57 WrapperNode [2023-11-19 07:44:57,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:44:57,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:57,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:44:57,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:44:57,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ... [2023-11-19 07:44:57,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ... [2023-11-19 07:44:58,239 INFO L138 Inliner]: procedures = 621, calls = 4747, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5015 [2023-11-19 07:44:58,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:44:58,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:44:58,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:44:58,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:44:58,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ... [2023-11-19 07:44:58,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ... [2023-11-19 07:44:58,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ... [2023-11-19 07:44:58,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ... [2023-11-19 07:44:58,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ... [2023-11-19 07:44:58,577 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ... [2023-11-19 07:44:58,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ... [2023-11-19 07:44:58,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ... [2023-11-19 07:44:58,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:44:58,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:44:58,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:44:58,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:44:58,683 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (1/1) ... [2023-11-19 07:44:58,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:44:58,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:44:58,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:44:58,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:44:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 07:44:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:44:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 07:44:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 07:44:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:44:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:44:58,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:44:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:44:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:44:59,012 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:44:59,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:15,050 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:15,064 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:15,065 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-19 07:45:15,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:15 BoogieIcfgContainer [2023-11-19 07:45:15,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:15,078 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:15,079 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:15,083 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:15,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:44:55" (1/3) ... [2023-11-19 07:45:15,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5016aabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:15, skipping insertion in model container [2023-11-19 07:45:15,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:44:57" (2/3) ... [2023-11-19 07:45:15,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5016aabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:15, skipping insertion in model container [2023-11-19 07:45:15,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:15" (3/3) ... [2023-11-19 07:45:15,090 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_92_safe.c-amalgamation.i [2023-11-19 07:45:15,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:15,117 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:45:15,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:15,204 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;@38198de6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>] [2023-11-19 07:45:15,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:45:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:45:15,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:15,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:15,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:15,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:15,236 INFO L85 PathProgramCache]: Analyzing trace with hash -722203584, now seen corresponding path program 1 times [2023-11-19 07:45:15,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:15,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703760092] [2023-11-19 07:45:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:16,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:16,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703760092] [2023-11-19 07:45:16,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703760092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:16,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:16,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:45:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998278211] [2023-11-19 07:45:16,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:16,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:45:16,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:16,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:45:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:16,605 INFO L87 Difference]: Start difference. First operand has 68 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:16,637 INFO L93 Difference]: Finished difference Result 132 states and 198 transitions. [2023-11-19 07:45:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:45:16,639 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-19 07:45:16,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:16,648 INFO L225 Difference]: With dead ends: 132 [2023-11-19 07:45:16,648 INFO L226 Difference]: Without dead ends: 64 [2023-11-19 07:45:16,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:16,655 INFO L413 NwaCegarLoop]: 85 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, 85 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 07:45:16,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:16,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-19 07:45:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-19 07:45:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2023-11-19 07:45:16,705 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 35 [2023-11-19 07:45:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:16,706 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2023-11-19 07:45:16,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2023-11-19 07:45:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:45:16,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:16,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:16,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:45:16,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:16,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:16,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1732144578, now seen corresponding path program 1 times [2023-11-19 07:45:16,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:16,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442661171] [2023-11-19 07:45:16,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:16,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:17,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:17,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442661171] [2023-11-19 07:45:17,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442661171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:17,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:17,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:17,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079444673] [2023-11-19 07:45:17,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:17,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:17,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:17,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:17,550 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:17,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:17,580 INFO L93 Difference]: Finished difference Result 119 states and 150 transitions. [2023-11-19 07:45:17,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:17,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-19 07:45:17,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:17,583 INFO L225 Difference]: With dead ends: 119 [2023-11-19 07:45:17,583 INFO L226 Difference]: Without dead ends: 64 [2023-11-19 07:45:17,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:17,587 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:17,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:17,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-19 07:45:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-19 07:45:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 63 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2023-11-19 07:45:17,607 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 35 [2023-11-19 07:45:17,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:17,607 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2023-11-19 07:45:17,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2023-11-19 07:45:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:45:17,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:17,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:17,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:45:17,611 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:17,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:17,619 INFO L85 PathProgramCache]: Analyzing trace with hash -191083456, now seen corresponding path program 1 times [2023-11-19 07:45:17,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:17,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129786696] [2023-11-19 07:45:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:17,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:19,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:19,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129786696] [2023-11-19 07:45:19,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129786696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:19,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:19,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:45:19,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963928620] [2023-11-19 07:45:19,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:19,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:19,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:19,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:19,065 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:19,104 INFO L93 Difference]: Finished difference Result 114 states and 143 transitions. [2023-11-19 07:45:19,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:19,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-19 07:45:19,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:19,107 INFO L225 Difference]: With dead ends: 114 [2023-11-19 07:45:19,107 INFO L226 Difference]: Without dead ends: 66 [2023-11-19 07:45:19,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:19,113 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 1 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:19,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 152 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-19 07:45:19,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-11-19 07:45:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2023-11-19 07:45:19,128 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 35 [2023-11-19 07:45:19,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:19,132 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2023-11-19 07:45:19,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2023-11-19 07:45:19,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:45:19,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:19,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:19,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:45:19,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:19,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash 136670462, now seen corresponding path program 1 times [2023-11-19 07:45:19,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:19,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657754815] [2023-11-19 07:45:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:19,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657754815] [2023-11-19 07:45:20,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657754815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512490835] [2023-11-19 07:45:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:20,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:20,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:20,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:20,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:45:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:22,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 5415 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:45:22,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:22,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:45:22,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:22,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512490835] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:22,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:22,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-19 07:45:22,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121268862] [2023-11-19 07:45:22,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:22,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:22,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:22,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:22,107 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:22,127 INFO L93 Difference]: Finished difference Result 98 states and 122 transitions. [2023-11-19 07:45:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:22,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-11-19 07:45:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:22,129 INFO L225 Difference]: With dead ends: 98 [2023-11-19 07:45:22,129 INFO L226 Difference]: Without dead ends: 66 [2023-11-19 07:45:22,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:22,131 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:22,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 147 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:22,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-19 07:45:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-19 07:45:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 65 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2023-11-19 07:45:22,138 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 37 [2023-11-19 07:45:22,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:22,138 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2023-11-19 07:45:22,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2023-11-19 07:45:22,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 07:45:22,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:22,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:22,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:22,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:22,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:22,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash -998960327, now seen corresponding path program 1 times [2023-11-19 07:45:22,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:22,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978771461] [2023-11-19 07:45:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:22,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978771461] [2023-11-19 07:45:23,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978771461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862418802] [2023-11-19 07:45:23,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:23,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:23,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:23,567 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:23,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:45:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:25,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 5433 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:45:25,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:45:25,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:45:25,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862418802] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:25,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:25,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-19 07:45:25,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219160082] [2023-11-19 07:45:25,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:25,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:25,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:25,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:25,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:25,105 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:25,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:25,128 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2023-11-19 07:45:25,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:25,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-11-19 07:45:25,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:25,132 INFO L225 Difference]: With dead ends: 83 [2023-11-19 07:45:25,133 INFO L226 Difference]: Without dead ends: 67 [2023-11-19 07:45:25,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:25,135 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:25,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 147 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:25,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-19 07:45:25,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-19 07:45:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 66 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2023-11-19 07:45:25,143 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 41 [2023-11-19 07:45:25,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:25,143 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2023-11-19 07:45:25,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2023-11-19 07:45:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:45:25,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:25,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:25,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:25,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:25,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:25,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:25,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1700699892, now seen corresponding path program 1 times [2023-11-19 07:45:25,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:25,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537232908] [2023-11-19 07:45:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:25,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:45:26,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:26,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537232908] [2023-11-19 07:45:26,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537232908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:26,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299844760] [2023-11-19 07:45:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:26,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:26,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:26,576 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:26,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:45:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:28,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 5451 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:45:28,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:45:28,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:45:28,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299844760] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:28,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:28,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-19 07:45:28,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79884752] [2023-11-19 07:45:28,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:28,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:28,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:28,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:28,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:28,084 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:28,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:28,100 INFO L93 Difference]: Finished difference Result 108 states and 134 transitions. [2023-11-19 07:45:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:28,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-19 07:45:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:28,102 INFO L225 Difference]: With dead ends: 108 [2023-11-19 07:45:28,102 INFO L226 Difference]: Without dead ends: 68 [2023-11-19 07:45:28,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:45:28,103 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 9 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:28,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-19 07:45:28,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-19 07:45:28,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:28,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2023-11-19 07:45:28,118 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 45 [2023-11-19 07:45:28,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:28,118 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2023-11-19 07:45:28,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:28,119 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2023-11-19 07:45:28,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 07:45:28,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:28,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:28,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:28,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:28,348 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:28,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:28,349 INFO L85 PathProgramCache]: Analyzing trace with hash -466973956, now seen corresponding path program 1 times [2023-11-19 07:45:28,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:28,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458547001] [2023-11-19 07:45:28,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:28,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:45:29,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:29,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458547001] [2023-11-19 07:45:29,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458547001] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:29,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117048690] [2023-11-19 07:45:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:29,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:29,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:29,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:29,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:45:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:30,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 5458 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:45:30,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:45:30,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:45:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117048690] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:30,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:30,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-19 07:45:30,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930727384] [2023-11-19 07:45:30,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:30,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:30,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:30,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:30,918 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:30,943 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2023-11-19 07:45:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:30,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-19 07:45:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:30,945 INFO L225 Difference]: With dead ends: 92 [2023-11-19 07:45:30,945 INFO L226 Difference]: Without dead ends: 69 [2023-11-19 07:45:30,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:30,948 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 9 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:30,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:30,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-19 07:45:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-19 07:45:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.25) internal successors, (85), 68 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2023-11-19 07:45:30,955 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 49 [2023-11-19 07:45:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:30,956 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2023-11-19 07:45:30,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2023-11-19 07:45:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:45:30,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:30,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:30,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:31,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:31,175 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:31,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash -657696188, now seen corresponding path program 1 times [2023-11-19 07:45:31,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:31,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267546424] [2023-11-19 07:45:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:31,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:45:32,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:32,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267546424] [2023-11-19 07:45:32,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267546424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:32,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772659340] [2023-11-19 07:45:32,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:32,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:32,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:32,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:32,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:45:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:33,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 5465 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:45:33,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:45:33,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:45:33,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772659340] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:33,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:45:33,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-19 07:45:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608581248] [2023-11-19 07:45:33,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:33,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:33,637 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:33,662 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2023-11-19 07:45:33,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:33,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-11-19 07:45:33,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:33,664 INFO L225 Difference]: With dead ends: 76 [2023-11-19 07:45:33,664 INFO L226 Difference]: Without dead ends: 70 [2023-11-19 07:45:33,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:45:33,665 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 9 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:33,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:45:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-19 07:45:33,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-19 07:45:33,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 69 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2023-11-19 07:45:33,671 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 53 [2023-11-19 07:45:33,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:33,671 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2023-11-19 07:45:33,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2023-11-19 07:45:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 07:45:33,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:33,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:33,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:33,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:33,888 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:33,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash 206339276, now seen corresponding path program 1 times [2023-11-19 07:45:33,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:33,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037129223] [2023-11-19 07:45:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:45:34,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:34,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037129223] [2023-11-19 07:45:34,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037129223] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:34,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21764621] [2023-11-19 07:45:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:34,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:34,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:34,840 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:34,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:45:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:36,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 5472 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:45:36,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:45:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:45:36,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:45:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:45:36,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21764621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:45:36,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:45:36,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-11-19 07:45:36,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886780729] [2023-11-19 07:45:36,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:45:36,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:45:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:36,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:45:36,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:45:36,138 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:45:36,225 INFO L93 Difference]: Finished difference Result 138 states and 173 transitions. [2023-11-19 07:45:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:45:36,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-19 07:45:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:45:36,226 INFO L225 Difference]: With dead ends: 138 [2023-11-19 07:45:36,227 INFO L226 Difference]: Without dead ends: 85 [2023-11-19 07:45:36,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:45:36,228 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 22 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:45:36,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 358 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:45:36,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-19 07:45:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2023-11-19 07:45:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 83 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2023-11-19 07:45:36,234 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 57 [2023-11-19 07:45:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:45:36,234 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2023-11-19 07:45:36,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2023-11-19 07:45:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 07:45:36,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:45:36,236 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:36,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:45:36,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:36,452 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:45:36,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:36,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1718054341, now seen corresponding path program 2 times [2023-11-19 07:45:36,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:36,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068627619] [2023-11-19 07:45:36,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:36,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-19 07:45:37,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:37,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068627619] [2023-11-19 07:45:37,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068627619] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:45:37,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450775892] [2023-11-19 07:45:37,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:45:37,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:45:37,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:37,520 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:45:37,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b129fe1a-aff4-4d93-a98e-545f336a0042/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process