./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --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 ad0884018313fc350052496ea1071e31a8b2c3997d36767afc87946a21697816 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:51:33,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:51:33,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:51:33,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:51:33,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:51:33,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:51:33,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:51:33,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:51:33,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:51:33,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:51:33,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:51:33,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:51:33,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:51:33,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:51:33,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:51:33,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:51:33,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:51:33,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:51:33,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:51:33,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:51:33,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:51:33,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:51:33,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:51:33,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:51:33,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:51:33,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:51:33,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:51:33,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:51:33,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:51:33,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:51:33,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:51:33,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:51:33,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:51:33,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:51:33,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:51:33,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:51:33,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:51:33,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:51:33,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:51:33,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:51:33,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:51:33,266 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:51:33,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:51:33,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:51:33,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:51:33,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:51:33,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:51:33,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:51:33,337 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:51:33,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:51:33,337 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:51:33,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:51:33,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:51:33,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:51:33,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:51:33,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:51:33,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:51:33,341 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:51:33,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:51:33,341 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:51:33,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:51:33,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:51:33,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:51:33,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:51:33,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:51:33,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:51:33,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:51:33,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:51:33,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:51:33,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:51:33,345 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:51:33,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:51:33,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:51:33,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:51:33,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad0884018313fc350052496ea1071e31a8b2c3997d36767afc87946a21697816 [2021-11-07 07:51:33,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:51:33,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:51:33,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:51:33,740 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:51:33,741 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:51:33,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c [2021-11-07 07:51:33,820 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/data/95533bce7/bf448e4586eb49e0a88fe54743e013a9/FLAG099881c73 [2021-11-07 07:51:34,904 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:51:34,905 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c [2021-11-07 07:51:34,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/data/95533bce7/bf448e4586eb49e0a88fe54743e013a9/FLAG099881c73 [2021-11-07 07:51:35,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/data/95533bce7/bf448e4586eb49e0a88fe54743e013a9 [2021-11-07 07:51:35,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:51:35,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:51:35,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:51:35,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:51:35,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:51:35,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:51:35" (1/1) ... [2021-11-07 07:51:35,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca38c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:35, skipping insertion in model container [2021-11-07 07:51:35,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:51:35" (1/1) ... [2021-11-07 07:51:35,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:51:35,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:51:36,592 WARN L228 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_5c15dbcf-5469-4ab8-b611-cabde24423f4/sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c[90162,90175] [2021-11-07 07:51:37,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:51:37,767 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:51:37,886 WARN L228 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_5c15dbcf-5469-4ab8-b611-cabde24423f4/sv-benchmarks/c/ntdrivers/cdaudio.i.cil-1.c[90162,90175] [2021-11-07 07:51:38,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:51:38,495 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:51:38,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38 WrapperNode [2021-11-07 07:51:38,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:51:38,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:51:38,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:51:38,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:51:38,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38" (1/1) ... [2021-11-07 07:51:38,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38" (1/1) ... [2021-11-07 07:51:39,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:51:39,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:51:39,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:51:39,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:51:39,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38" (1/1) ... [2021-11-07 07:51:39,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38" (1/1) ... [2021-11-07 07:51:39,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38" (1/1) ... [2021-11-07 07:51:39,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38" (1/1) ... [2021-11-07 07:51:39,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38" (1/1) ... [2021-11-07 07:51:39,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38" (1/1) ... [2021-11-07 07:51:39,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38" (1/1) ... [2021-11-07 07:51:39,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:51:39,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:51:39,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:51:39,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:51:39,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38" (1/1) ... [2021-11-07 07:51:39,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:51:39,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:51:39,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:51:39,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:51:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 07:51:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 07:51:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 07:51:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:51:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:51:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:51:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:51:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:51:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 07:51:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:51:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:51:39,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:51:39,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 07:51:39,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:51:39,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:51:40,374 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,376 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,383 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,391 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,402 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,407 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,412 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,421 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,426 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,430 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,433 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,437 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,442 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,446 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,449 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,453 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,458 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,461 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,465 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,469 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,471 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,475 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,479 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,483 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,486 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,491 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,495 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,504 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,510 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,516 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,522 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,526 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,528 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,533 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,535 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,540 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,552 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,557 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,560 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,564 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,566 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,571 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:51:40,576 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:52:14,637 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1288: assume false; [2021-11-07 07:52:14,638 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1289: assume !false; [2021-11-07 07:52:14,638 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1240: assume false; [2021-11-07 07:52:14,638 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1241: assume !false; [2021-11-07 07:52:14,639 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##274: assume !false; [2021-11-07 07:52:14,639 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##273: assume false; [2021-11-07 07:52:14,639 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##207: assume false; [2021-11-07 07:52:14,639 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##208: assume !false; [2021-11-07 07:52:14,639 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1221: assume false; [2021-11-07 07:52:14,640 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1222: assume !false; [2021-11-07 07:52:14,640 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##315: assume !false; [2021-11-07 07:52:14,640 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##314: assume false; [2021-11-07 07:52:14,640 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1170: assume false; [2021-11-07 07:52:14,641 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1171: assume !false; [2021-11-07 07:52:14,641 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L3709: CdAudioPnp_#res := 0; [2021-11-07 07:52:14,641 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##374: assume !false; [2021-11-07 07:52:14,641 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##373: assume false; [2021-11-07 07:52:14,642 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1120: assume !false; [2021-11-07 07:52:14,642 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1119: assume false; [2021-11-07 07:52:14,642 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##346: assume false; [2021-11-07 07:52:14,642 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##347: assume !false; [2021-11-07 07:52:14,643 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##445: assume false; [2021-11-07 07:52:14,643 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1054: assume false; [2021-11-07 07:52:14,643 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1055: assume !false; [2021-11-07 07:52:14,643 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##401: assume !false; [2021-11-07 07:52:14,643 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##400: assume false; [2021-11-07 07:52:14,644 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##492: assume false; [2021-11-07 07:52:14,644 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##493: assume !false; [2021-11-07 07:52:14,644 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1008: assume false; [2021-11-07 07:52:14,644 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1009: assume !false; [2021-11-07 07:52:14,645 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##446: assume !false; [2021-11-07 07:52:14,645 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##559: assume !false; [2021-11-07 07:52:14,645 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##558: assume false; [2021-11-07 07:52:14,645 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##521: assume !false; [2021-11-07 07:52:14,646 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##520: assume false; [2021-11-07 07:52:14,646 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1805: assume !false; [2021-11-07 07:52:14,646 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1804: assume false; [2021-11-07 07:52:14,646 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##94: assume !false; [2021-11-07 07:52:14,647 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume false; [2021-11-07 07:52:14,647 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1756: assume false; [2021-11-07 07:52:14,647 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1757: assume !false; [2021-11-07 07:52:14,647 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##68: assume !false; [2021-11-07 07:52:14,648 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##67: assume false; [2021-11-07 07:52:14,648 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !false; [2021-11-07 07:52:14,648 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume false; [2021-11-07 07:52:14,648 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume false; [2021-11-07 07:52:14,648 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume !false; [2021-11-07 07:52:14,649 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##668: assume !false; [2021-11-07 07:52:14,649 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##667: assume false; [2021-11-07 07:52:14,649 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##607: assume false; [2021-11-07 07:52:14,649 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##608: assume !false; [2021-11-07 07:52:14,650 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##639: assume !false; [2021-11-07 07:52:14,650 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##638: assume false; [2021-11-07 07:52:14,650 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1668: assume false; [2021-11-07 07:52:14,650 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1669: assume !false; [2021-11-07 07:52:14,651 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1611: assume false; [2021-11-07 07:52:14,651 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1612: assume !false; [2021-11-07 07:52:14,651 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1698: assume false; [2021-11-07 07:52:14,651 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1699: assume !false; [2021-11-07 07:52:14,652 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##733: assume !false; [2021-11-07 07:52:14,652 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##732: assume false; [2021-11-07 07:52:14,652 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##760: assume false; [2021-11-07 07:52:14,652 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##761: assume !false; [2021-11-07 07:52:14,653 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##704: assume !false; [2021-11-07 07:52:14,653 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##703: assume false; [2021-11-07 07:52:14,653 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1540: assume !false; [2021-11-07 07:52:14,653 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1539: assume false; [2021-11-07 07:52:14,654 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1583: assume false; [2021-11-07 07:52:14,654 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1584: assume !false; [2021-11-07 07:52:14,654 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##865: assume !false; [2021-11-07 07:52:14,654 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##864: assume false; [2021-11-07 07:52:14,655 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##805: assume !false; [2021-11-07 07:52:14,655 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##804: assume false; [2021-11-07 07:52:14,655 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##838: assume !false; [2021-11-07 07:52:14,655 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##837: assume false; [2021-11-07 07:52:14,655 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##963: assume !false; [2021-11-07 07:52:14,656 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##962: assume false; [2021-11-07 07:52:14,656 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##911: assume false; [2021-11-07 07:52:14,656 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##912: assume !false; [2021-11-07 07:52:14,657 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume !false; [2021-11-07 07:52:14,657 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##133: assume false; [2021-11-07 07:52:14,657 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume !false; [2021-11-07 07:52:14,657 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1367: assume false; [2021-11-07 07:52:14,658 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1368: assume !false; [2021-11-07 07:52:14,658 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##169: assume false; [2021-11-07 07:52:14,658 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1318: assume false; [2021-11-07 07:52:14,658 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1319: assume !false; [2021-11-07 07:52:14,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:52:14,689 INFO L299 CfgBuilder]: Removed 603 assume(true) statements. [2021-11-07 07:52:14,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:52:14 BoogieIcfgContainer [2021-11-07 07:52:14,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:52:14,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:52:14,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:52:14,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:52:14,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:51:35" (1/3) ... [2021-11-07 07:52:14,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a527d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:52:14, skipping insertion in model container [2021-11-07 07:52:14,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:51:38" (2/3) ... [2021-11-07 07:52:14,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a527d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:52:14, skipping insertion in model container [2021-11-07 07:52:14,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:52:14" (3/3) ... [2021-11-07 07:52:14,709 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio.i.cil-1.c [2021-11-07 07:52:14,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:52:14,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 86 error locations. [2021-11-07 07:52:14,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:52:14,798 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 07:52:14,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2021-11-07 07:52:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 1253 states, 1166 states have (on average 1.6312178387650085) internal successors, (1902), 1252 states have internal predecessors, (1902), 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) [2021-11-07 07:52:14,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 07:52:14,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:14,879 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:14,879 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:14,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:14,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1319884772, now seen corresponding path program 1 times [2021-11-07 07:52:14,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:14,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085846267] [2021-11-07 07:52:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:14,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:15,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:15,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085846267] [2021-11-07 07:52:15,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085846267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:15,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:15,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:15,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108599019] [2021-11-07 07:52:15,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:15,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:15,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:15,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:15,646 INFO L87 Difference]: Start difference. First operand has 1253 states, 1166 states have (on average 1.6312178387650085) internal successors, (1902), 1252 states have internal predecessors, (1902), 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 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-07 07:52:16,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:16,396 INFO L93 Difference]: Finished difference Result 2511 states and 3811 transitions. [2021-11-07 07:52:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:16,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-11-07 07:52:16,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:16,439 INFO L225 Difference]: With dead ends: 2511 [2021-11-07 07:52:16,439 INFO L226 Difference]: Without dead ends: 1248 [2021-11-07 07:52:16,453 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:16,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-11-07 07:52:16,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2021-11-07 07:52:16,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1162 states have (on average 1.5438898450946643) internal successors, (1794), 1247 states have internal predecessors, (1794), 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) [2021-11-07 07:52:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1794 transitions. [2021-11-07 07:52:16,618 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1794 transitions. Word has length 17 [2021-11-07 07:52:16,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:16,618 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 1794 transitions. [2021-11-07 07:52:16,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-07 07:52:16,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1794 transitions. [2021-11-07 07:52:16,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 07:52:16,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:16,622 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:16,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:52:16,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr78ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:16,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash -628335153, now seen corresponding path program 1 times [2021-11-07 07:52:16,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:16,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753997802] [2021-11-07 07:52:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:16,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:16,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:16,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753997802] [2021-11-07 07:52:16,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753997802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:16,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:16,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:16,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314350110] [2021-11-07 07:52:16,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:16,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:16,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:16,929 INFO L87 Difference]: Start difference. First operand 1248 states and 1794 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-07 07:52:17,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:17,598 INFO L93 Difference]: Finished difference Result 1712 states and 2464 transitions. [2021-11-07 07:52:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:17,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-11-07 07:52:17,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:17,610 INFO L225 Difference]: With dead ends: 1712 [2021-11-07 07:52:17,611 INFO L226 Difference]: Without dead ends: 1456 [2021-11-07 07:52:17,612 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:17,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-11-07 07:52:17,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1431. [2021-11-07 07:52:17,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1364 states have (on average 1.5241935483870968) internal successors, (2079), 1430 states have internal predecessors, (2079), 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) [2021-11-07 07:52:17,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2079 transitions. [2021-11-07 07:52:17,673 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2079 transitions. Word has length 18 [2021-11-07 07:52:17,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:17,673 INFO L470 AbstractCegarLoop]: Abstraction has 1431 states and 2079 transitions. [2021-11-07 07:52:17,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-07 07:52:17,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2079 transitions. [2021-11-07 07:52:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 07:52:17,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:17,678 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:17,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:52:17,678 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:17,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash 315923840, now seen corresponding path program 1 times [2021-11-07 07:52:17,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:17,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485107654] [2021-11-07 07:52:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:17,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:17,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:17,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485107654] [2021-11-07 07:52:17,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485107654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:17,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:17,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:17,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822755274] [2021-11-07 07:52:17,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:17,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:17,800 INFO L87 Difference]: Start difference. First operand 1431 states and 2079 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 07:52:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:18,594 INFO L93 Difference]: Finished difference Result 2473 states and 3614 transitions. [2021-11-07 07:52:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:18,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-07 07:52:18,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:18,611 INFO L225 Difference]: With dead ends: 2473 [2021-11-07 07:52:18,611 INFO L226 Difference]: Without dead ends: 2070 [2021-11-07 07:52:18,613 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:18,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2021-11-07 07:52:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1624. [2021-11-07 07:52:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1557 states have (on average 1.5208734746307) internal successors, (2368), 1623 states have internal predecessors, (2368), 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) [2021-11-07 07:52:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2368 transitions. [2021-11-07 07:52:18,686 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2368 transitions. Word has length 23 [2021-11-07 07:52:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:18,687 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 2368 transitions. [2021-11-07 07:52:18,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 07:52:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2368 transitions. [2021-11-07 07:52:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 07:52:18,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:18,691 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:18,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:52:18,692 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:18,692 INFO L85 PathProgramCache]: Analyzing trace with hash 511848256, now seen corresponding path program 1 times [2021-11-07 07:52:18,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:18,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438559009] [2021-11-07 07:52:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:18,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:52:18,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:18,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438559009] [2021-11-07 07:52:18,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438559009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:18,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:18,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:18,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545273780] [2021-11-07 07:52:18,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:18,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:18,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:18,842 INFO L87 Difference]: Start difference. First operand 1624 states and 2368 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 07:52:18,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:18,951 INFO L93 Difference]: Finished difference Result 3250 states and 4740 transitions. [2021-11-07 07:52:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:18,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-07 07:52:18,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:18,965 INFO L225 Difference]: With dead ends: 3250 [2021-11-07 07:52:18,965 INFO L226 Difference]: Without dead ends: 1630 [2021-11-07 07:52:18,969 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:18,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2021-11-07 07:52:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1627. [2021-11-07 07:52:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1560 states have (on average 1.5198717948717948) internal successors, (2371), 1626 states have internal predecessors, (2371), 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) [2021-11-07 07:52:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2371 transitions. [2021-11-07 07:52:19,046 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2371 transitions. Word has length 23 [2021-11-07 07:52:19,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:19,046 INFO L470 AbstractCegarLoop]: Abstraction has 1627 states and 2371 transitions. [2021-11-07 07:52:19,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 07:52:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2371 transitions. [2021-11-07 07:52:19,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 07:52:19,048 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:19,049 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:19,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:52:19,049 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:19,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:19,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1367002566, now seen corresponding path program 1 times [2021-11-07 07:52:19,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:19,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196244807] [2021-11-07 07:52:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:19,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:52:19,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:19,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196244807] [2021-11-07 07:52:19,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196244807] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:19,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166781646] [2021-11-07 07:52:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:19,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:19,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:19,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:52:19,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:52:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:19,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:52:19,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:20,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166781646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:20,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:52:20,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 07:52:20,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614717882] [2021-11-07 07:52:20,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:20,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:20,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:20,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:20,072 INFO L87 Difference]: Start difference. First operand 1627 states and 2371 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-07 07:52:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:20,232 INFO L93 Difference]: Finished difference Result 2250 states and 3260 transitions. [2021-11-07 07:52:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:20,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2021-11-07 07:52:20,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:20,248 INFO L225 Difference]: With dead ends: 2250 [2021-11-07 07:52:20,248 INFO L226 Difference]: Without dead ends: 1883 [2021-11-07 07:52:20,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:20,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2021-11-07 07:52:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1459. [2021-11-07 07:52:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1413 states have (on average 1.5145081387119603) internal successors, (2140), 1458 states have internal predecessors, (2140), 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) [2021-11-07 07:52:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2140 transitions. [2021-11-07 07:52:20,351 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2140 transitions. Word has length 29 [2021-11-07 07:52:20,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:20,351 INFO L470 AbstractCegarLoop]: Abstraction has 1459 states and 2140 transitions. [2021-11-07 07:52:20,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-07 07:52:20,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2140 transitions. [2021-11-07 07:52:20,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 07:52:20,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:20,354 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:20,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:20,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:20,583 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:20,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1213751210, now seen corresponding path program 1 times [2021-11-07 07:52:20,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:20,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496059480] [2021-11-07 07:52:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:20,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:20,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:20,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496059480] [2021-11-07 07:52:20,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496059480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:20,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:20,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:52:20,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505484465] [2021-11-07 07:52:20,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:52:20,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:20,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:52:20,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:20,858 INFO L87 Difference]: Start difference. First operand 1459 states and 2140 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-11-07 07:52:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:21,820 INFO L93 Difference]: Finished difference Result 2164 states and 3143 transitions. [2021-11-07 07:52:21,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:52:21,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2021-11-07 07:52:21,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:21,832 INFO L225 Difference]: With dead ends: 2164 [2021-11-07 07:52:21,833 INFO L226 Difference]: Without dead ends: 1359 [2021-11-07 07:52:21,839 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:21,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2021-11-07 07:52:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1225. [2021-11-07 07:52:21,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1201 states have (on average 1.4746044962531224) internal successors, (1771), 1224 states have internal predecessors, (1771), 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) [2021-11-07 07:52:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1771 transitions. [2021-11-07 07:52:21,918 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1771 transitions. Word has length 30 [2021-11-07 07:52:21,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:21,919 INFO L470 AbstractCegarLoop]: Abstraction has 1225 states and 1771 transitions. [2021-11-07 07:52:21,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2021-11-07 07:52:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1771 transitions. [2021-11-07 07:52:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 07:52:21,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:21,924 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:21,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:52:21,925 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr81ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1734968036, now seen corresponding path program 1 times [2021-11-07 07:52:21,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:21,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020336397] [2021-11-07 07:52:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:21,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:22,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:22,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020336397] [2021-11-07 07:52:22,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020336397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:22,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:22,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:22,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738225817] [2021-11-07 07:52:22,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:22,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:22,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:22,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:22,082 INFO L87 Difference]: Start difference. First operand 1225 states and 1771 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-11-07 07:52:22,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:22,527 INFO L93 Difference]: Finished difference Result 1225 states and 1771 transitions. [2021-11-07 07:52:22,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:22,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-11-07 07:52:22,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:22,540 INFO L225 Difference]: With dead ends: 1225 [2021-11-07 07:52:22,540 INFO L226 Difference]: Without dead ends: 1207 [2021-11-07 07:52:22,541 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2021-11-07 07:52:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1207. [2021-11-07 07:52:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 1192 states have (on average 1.4706375838926173) internal successors, (1753), 1206 states have internal predecessors, (1753), 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) [2021-11-07 07:52:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1753 transitions. [2021-11-07 07:52:22,623 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1753 transitions. Word has length 31 [2021-11-07 07:52:22,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:22,625 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 1753 transitions. [2021-11-07 07:52:22,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-11-07 07:52:22,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1753 transitions. [2021-11-07 07:52:22,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 07:52:22,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:22,628 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:22,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 07:52:22,629 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:22,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1454816201, now seen corresponding path program 1 times [2021-11-07 07:52:22,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:22,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377451343] [2021-11-07 07:52:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:22,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:22,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:22,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377451343] [2021-11-07 07:52:22,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377451343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:22,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:22,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:52:22,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625135005] [2021-11-07 07:52:22,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:52:22,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:22,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:52:22,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:22,871 INFO L87 Difference]: Start difference. First operand 1207 states and 1753 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-07 07:52:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:23,336 INFO L93 Difference]: Finished difference Result 1711 states and 2486 transitions. [2021-11-07 07:52:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:52:23,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-07 07:52:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:23,347 INFO L225 Difference]: With dead ends: 1711 [2021-11-07 07:52:23,347 INFO L226 Difference]: Without dead ends: 1265 [2021-11-07 07:52:23,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2021-11-07 07:52:23,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1187. [2021-11-07 07:52:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1174 states have (on average 1.4676320272572403) internal successors, (1723), 1186 states have internal predecessors, (1723), 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) [2021-11-07 07:52:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1723 transitions. [2021-11-07 07:52:23,435 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1723 transitions. Word has length 34 [2021-11-07 07:52:23,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:23,436 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 1723 transitions. [2021-11-07 07:52:23,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-07 07:52:23,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1723 transitions. [2021-11-07 07:52:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 07:52:23,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:23,439 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:23,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 07:52:23,440 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:23,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:23,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1806939773, now seen corresponding path program 1 times [2021-11-07 07:52:23,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:23,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464539802] [2021-11-07 07:52:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:23,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:23,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:23,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464539802] [2021-11-07 07:52:23,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464539802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:23,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:23,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:52:23,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270963818] [2021-11-07 07:52:23,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:23,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:23,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:23,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:23,665 INFO L87 Difference]: Start difference. First operand 1187 states and 1723 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 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) [2021-11-07 07:52:23,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:23,768 INFO L93 Difference]: Finished difference Result 1710 states and 2479 transitions. [2021-11-07 07:52:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:23,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 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 [2021-11-07 07:52:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:23,780 INFO L225 Difference]: With dead ends: 1710 [2021-11-07 07:52:23,780 INFO L226 Difference]: Without dead ends: 1183 [2021-11-07 07:52:23,782 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:23,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2021-11-07 07:52:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2021-11-07 07:52:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1171 states have (on average 1.4551665243381724) internal successors, (1704), 1182 states have internal predecessors, (1704), 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) [2021-11-07 07:52:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1704 transitions. [2021-11-07 07:52:23,862 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1704 transitions. Word has length 37 [2021-11-07 07:52:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:23,863 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1704 transitions. [2021-11-07 07:52:23,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 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) [2021-11-07 07:52:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1704 transitions. [2021-11-07 07:52:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 07:52:23,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:23,867 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:23,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 07:52:23,867 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash 170892809, now seen corresponding path program 1 times [2021-11-07 07:52:23,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:23,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266987131] [2021-11-07 07:52:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:23,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:24,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:24,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266987131] [2021-11-07 07:52:24,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266987131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:24,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:24,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:52:24,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132487742] [2021-11-07 07:52:24,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:52:24,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:24,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:52:24,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:24,079 INFO L87 Difference]: Start difference. First operand 1183 states and 1704 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-07 07:52:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:25,164 INFO L93 Difference]: Finished difference Result 1258 states and 1785 transitions. [2021-11-07 07:52:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:52:25,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2021-11-07 07:52:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:25,174 INFO L225 Difference]: With dead ends: 1258 [2021-11-07 07:52:25,175 INFO L226 Difference]: Without dead ends: 1202 [2021-11-07 07:52:25,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:25,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-11-07 07:52:25,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1183. [2021-11-07 07:52:25,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1171 states have (on average 1.4474807856532879) internal successors, (1695), 1182 states have internal predecessors, (1695), 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) [2021-11-07 07:52:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1695 transitions. [2021-11-07 07:52:25,261 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1695 transitions. Word has length 40 [2021-11-07 07:52:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:25,262 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1695 transitions. [2021-11-07 07:52:25,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-07 07:52:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1695 transitions. [2021-11-07 07:52:25,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 07:52:25,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:25,266 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:25,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 07:52:25,268 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:25,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1390359217, now seen corresponding path program 1 times [2021-11-07 07:52:25,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:25,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087663593] [2021-11-07 07:52:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:25,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:25,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:25,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087663593] [2021-11-07 07:52:25,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087663593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:25,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:25,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:25,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332892557] [2021-11-07 07:52:25,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:25,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:25,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:25,405 INFO L87 Difference]: Start difference. First operand 1183 states and 1695 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) [2021-11-07 07:52:25,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:25,699 INFO L93 Difference]: Finished difference Result 1665 states and 2396 transitions. [2021-11-07 07:52:25,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:25,699 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 [2021-11-07 07:52:25,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:25,710 INFO L225 Difference]: With dead ends: 1665 [2021-11-07 07:52:25,711 INFO L226 Difference]: Without dead ends: 1239 [2021-11-07 07:52:25,712 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:25,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-07 07:52:25,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1183. [2021-11-07 07:52:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1171 states have (on average 1.4457728437233135) internal successors, (1693), 1182 states have internal predecessors, (1693), 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) [2021-11-07 07:52:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1693 transitions. [2021-11-07 07:52:25,798 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1693 transitions. Word has length 41 [2021-11-07 07:52:25,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:25,800 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1693 transitions. [2021-11-07 07:52:25,800 INFO L471 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) [2021-11-07 07:52:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1693 transitions. [2021-11-07 07:52:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 07:52:25,803 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:25,803 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:25,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 07:52:25,810 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:25,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:25,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1300659090, now seen corresponding path program 1 times [2021-11-07 07:52:25,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:25,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906778399] [2021-11-07 07:52:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:25,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:25,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:25,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906778399] [2021-11-07 07:52:25,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906778399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:25,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:25,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:25,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889432895] [2021-11-07 07:52:25,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:25,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:25,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:25,937 INFO L87 Difference]: Start difference. First operand 1183 states and 1693 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 07:52:26,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:26,434 INFO L93 Difference]: Finished difference Result 1451 states and 2067 transitions. [2021-11-07 07:52:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:26,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-07 07:52:26,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:26,446 INFO L225 Difference]: With dead ends: 1451 [2021-11-07 07:52:26,446 INFO L226 Difference]: Without dead ends: 1437 [2021-11-07 07:52:26,448 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:26,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2021-11-07 07:52:26,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1227. [2021-11-07 07:52:26,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1215 states have (on average 1.4320987654320987) internal successors, (1740), 1226 states have internal predecessors, (1740), 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) [2021-11-07 07:52:26,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1740 transitions. [2021-11-07 07:52:26,538 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1740 transitions. Word has length 42 [2021-11-07 07:52:26,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:26,539 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 1740 transitions. [2021-11-07 07:52:26,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 07:52:26,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1740 transitions. [2021-11-07 07:52:26,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 07:52:26,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:26,542 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:26,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 07:52:26,542 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:26,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:26,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1300092069, now seen corresponding path program 1 times [2021-11-07 07:52:26,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:26,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150356599] [2021-11-07 07:52:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:26,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:26,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:26,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150356599] [2021-11-07 07:52:26,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150356599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:26,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:26,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:52:26,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609215089] [2021-11-07 07:52:26,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:52:26,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:26,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:52:26,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:26,690 INFO L87 Difference]: Start difference. First operand 1227 states and 1740 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-07 07:52:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:27,704 INFO L93 Difference]: Finished difference Result 1434 states and 2050 transitions. [2021-11-07 07:52:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:52:27,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-07 07:52:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:27,716 INFO L225 Difference]: With dead ends: 1434 [2021-11-07 07:52:27,716 INFO L226 Difference]: Without dead ends: 1432 [2021-11-07 07:52:27,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-11-07 07:52:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1229. [2021-11-07 07:52:27,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1217 states have (on average 1.4322103533278554) internal successors, (1743), 1228 states have internal predecessors, (1743), 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) [2021-11-07 07:52:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1743 transitions. [2021-11-07 07:52:27,806 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1743 transitions. Word has length 42 [2021-11-07 07:52:27,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:27,807 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1743 transitions. [2021-11-07 07:52:27,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-07 07:52:27,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1743 transitions. [2021-11-07 07:52:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 07:52:27,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:27,811 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:27,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 07:52:27,812 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr83ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:27,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:27,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1300103985, now seen corresponding path program 1 times [2021-11-07 07:52:27,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:27,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478345359] [2021-11-07 07:52:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:27,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:27,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:27,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478345359] [2021-11-07 07:52:27,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478345359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:27,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:27,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:27,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415601003] [2021-11-07 07:52:27,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:27,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:27,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:27,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:27,928 INFO L87 Difference]: Start difference. First operand 1229 states and 1743 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 07:52:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:28,087 INFO L93 Difference]: Finished difference Result 1250 states and 1769 transitions. [2021-11-07 07:52:28,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:28,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-07 07:52:28,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:28,097 INFO L225 Difference]: With dead ends: 1250 [2021-11-07 07:52:28,097 INFO L226 Difference]: Without dead ends: 1222 [2021-11-07 07:52:28,098 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-11-07 07:52:28,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1184. [2021-11-07 07:52:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1173 states have (on average 1.4424552429667519) internal successors, (1692), 1183 states have internal predecessors, (1692), 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) [2021-11-07 07:52:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1692 transitions. [2021-11-07 07:52:28,188 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1692 transitions. Word has length 42 [2021-11-07 07:52:28,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:28,189 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 1692 transitions. [2021-11-07 07:52:28,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 07:52:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1692 transitions. [2021-11-07 07:52:28,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 07:52:28,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:28,193 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:28,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 07:52:28,193 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:28,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:28,194 INFO L85 PathProgramCache]: Analyzing trace with hash 796066670, now seen corresponding path program 1 times [2021-11-07 07:52:28,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:28,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161957790] [2021-11-07 07:52:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:28,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:28,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:28,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161957790] [2021-11-07 07:52:28,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161957790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:28,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:28,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:28,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066436679] [2021-11-07 07:52:28,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:28,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:28,314 INFO L87 Difference]: Start difference. First operand 1184 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 07:52:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:28,421 INFO L93 Difference]: Finished difference Result 1241 states and 1756 transitions. [2021-11-07 07:52:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:28,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-07 07:52:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:28,431 INFO L225 Difference]: With dead ends: 1241 [2021-11-07 07:52:28,431 INFO L226 Difference]: Without dead ends: 1219 [2021-11-07 07:52:28,432 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-11-07 07:52:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1187. [2021-11-07 07:52:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1176 states have (on average 1.4421768707482994) internal successors, (1696), 1186 states have internal predecessors, (1696), 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) [2021-11-07 07:52:28,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1696 transitions. [2021-11-07 07:52:28,523 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1696 transitions. Word has length 42 [2021-11-07 07:52:28,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:28,524 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 1696 transitions. [2021-11-07 07:52:28,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-07 07:52:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1696 transitions. [2021-11-07 07:52:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 07:52:28,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:28,528 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:28,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 07:52:28,529 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:28,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash 209260656, now seen corresponding path program 1 times [2021-11-07 07:52:28,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:28,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630875539] [2021-11-07 07:52:28,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:28,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:28,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:28,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630875539] [2021-11-07 07:52:28,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630875539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:28,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:28,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:52:28,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680430675] [2021-11-07 07:52:28,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:52:28,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:28,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:52:28,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:28,702 INFO L87 Difference]: Start difference. First operand 1187 states and 1696 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-07 07:52:29,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:29,475 INFO L93 Difference]: Finished difference Result 1213 states and 1724 transitions. [2021-11-07 07:52:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:52:29,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-07 07:52:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:29,484 INFO L225 Difference]: With dead ends: 1213 [2021-11-07 07:52:29,484 INFO L226 Difference]: Without dead ends: 1150 [2021-11-07 07:52:29,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:29,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2021-11-07 07:52:29,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1148. [2021-11-07 07:52:29,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1137 states have (on average 1.4406332453825859) internal successors, (1638), 1147 states have internal predecessors, (1638), 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) [2021-11-07 07:52:29,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1638 transitions. [2021-11-07 07:52:29,575 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1638 transitions. Word has length 42 [2021-11-07 07:52:29,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:29,575 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 1638 transitions. [2021-11-07 07:52:29,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-07 07:52:29,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1638 transitions. [2021-11-07 07:52:29,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 07:52:29,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:29,579 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:29,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 07:52:29,581 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:29,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:29,581 INFO L85 PathProgramCache]: Analyzing trace with hash -92442285, now seen corresponding path program 1 times [2021-11-07 07:52:29,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:29,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889923716] [2021-11-07 07:52:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:29,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:29,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:29,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889923716] [2021-11-07 07:52:29,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889923716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:29,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:29,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:29,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971603906] [2021-11-07 07:52:29,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:29,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:29,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:29,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:29,709 INFO L87 Difference]: Start difference. First operand 1148 states and 1638 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:52:30,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:30,112 INFO L93 Difference]: Finished difference Result 1526 states and 2201 transitions. [2021-11-07 07:52:30,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:30,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 07:52:30,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:30,121 INFO L225 Difference]: With dead ends: 1526 [2021-11-07 07:52:30,122 INFO L226 Difference]: Without dead ends: 1137 [2021-11-07 07:52:30,123 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:30,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-11-07 07:52:30,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1137. [2021-11-07 07:52:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1129 states have (on average 1.4384410983170948) internal successors, (1624), 1136 states have internal predecessors, (1624), 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) [2021-11-07 07:52:30,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1624 transitions. [2021-11-07 07:52:30,232 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1624 transitions. Word has length 43 [2021-11-07 07:52:30,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:30,233 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 1624 transitions. [2021-11-07 07:52:30,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:52:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1624 transitions. [2021-11-07 07:52:30,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 07:52:30,237 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:30,237 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:30,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 07:52:30,237 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr85ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:30,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:30,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1648137605, now seen corresponding path program 1 times [2021-11-07 07:52:30,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:30,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501638275] [2021-11-07 07:52:30,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:30,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:52:30,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:30,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501638275] [2021-11-07 07:52:30,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501638275] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:30,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527816294] [2021-11-07 07:52:30,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:30,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:30,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:30,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:52:30,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:52:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:30,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:52:30,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:31,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527816294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:31,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:52:31,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-07 07:52:31,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140509401] [2021-11-07 07:52:31,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:52:31,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:31,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:52:31,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:52:31,064 INFO L87 Difference]: Start difference. First operand 1137 states and 1624 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:52:31,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:31,957 INFO L93 Difference]: Finished difference Result 1148 states and 1635 transitions. [2021-11-07 07:52:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:52:31,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 07:52:31,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:31,965 INFO L225 Difference]: With dead ends: 1148 [2021-11-07 07:52:31,966 INFO L226 Difference]: Without dead ends: 1121 [2021-11-07 07:52:31,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:52:31,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2021-11-07 07:52:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1121. [2021-11-07 07:52:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1113 states have (on average 1.4420485175202156) internal successors, (1605), 1120 states have internal predecessors, (1605), 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) [2021-11-07 07:52:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1605 transitions. [2021-11-07 07:52:32,078 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1605 transitions. Word has length 43 [2021-11-07 07:52:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:32,078 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1605 transitions. [2021-11-07 07:52:32,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:52:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1605 transitions. [2021-11-07 07:52:32,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 07:52:32,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:32,083 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:32,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:32,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 07:52:32,311 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:32,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1576286858, now seen corresponding path program 1 times [2021-11-07 07:52:32,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:32,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101013753] [2021-11-07 07:52:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:32,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:32,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:32,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101013753] [2021-11-07 07:52:32,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101013753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:32,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:32,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:32,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194581016] [2021-11-07 07:52:32,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:32,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:32,420 INFO L87 Difference]: Start difference. First operand 1121 states and 1605 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:52:32,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:32,561 INFO L93 Difference]: Finished difference Result 1172 states and 1661 transitions. [2021-11-07 07:52:32,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:32,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 07:52:32,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:32,581 INFO L225 Difference]: With dead ends: 1172 [2021-11-07 07:52:32,588 INFO L226 Difference]: Without dead ends: 1147 [2021-11-07 07:52:32,590 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:32,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2021-11-07 07:52:32,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1122. [2021-11-07 07:52:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1114 states have (on average 1.4416517055655296) internal successors, (1606), 1121 states have internal predecessors, (1606), 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) [2021-11-07 07:52:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1606 transitions. [2021-11-07 07:52:32,675 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1606 transitions. Word has length 44 [2021-11-07 07:52:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:32,675 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1606 transitions. [2021-11-07 07:52:32,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:52:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1606 transitions. [2021-11-07 07:52:32,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 07:52:32,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:32,678 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:32,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 07:52:32,679 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr82ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:32,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:32,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1697612084, now seen corresponding path program 1 times [2021-11-07 07:52:32,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:32,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539305749] [2021-11-07 07:52:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:32,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:32,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:32,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539305749] [2021-11-07 07:52:32,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539305749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:32,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:32,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:32,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388575569] [2021-11-07 07:52:32,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:32,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:32,797 INFO L87 Difference]: Start difference. First operand 1122 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:52:33,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:33,194 INFO L93 Difference]: Finished difference Result 1141 states and 1628 transitions. [2021-11-07 07:52:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:33,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 07:52:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:33,209 INFO L225 Difference]: With dead ends: 1141 [2021-11-07 07:52:33,209 INFO L226 Difference]: Without dead ends: 1134 [2021-11-07 07:52:33,210 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-07 07:52:33,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2021-11-07 07:52:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1126 states have (on average 1.4387211367673178) internal successors, (1620), 1133 states have internal predecessors, (1620), 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) [2021-11-07 07:52:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1620 transitions. [2021-11-07 07:52:33,304 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1620 transitions. Word has length 44 [2021-11-07 07:52:33,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:33,305 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1620 transitions. [2021-11-07 07:52:33,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:52:33,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1620 transitions. [2021-11-07 07:52:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 07:52:33,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:33,309 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:33,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 07:52:33,310 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:33,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:33,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1086757229, now seen corresponding path program 1 times [2021-11-07 07:52:33,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:33,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760952278] [2021-11-07 07:52:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:33,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:52:33,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:33,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760952278] [2021-11-07 07:52:33,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760952278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:33,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:33,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:52:33,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167231478] [2021-11-07 07:52:33,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:52:33,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:33,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:52:33,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:33,473 INFO L87 Difference]: Start difference. First operand 1134 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:52:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:34,262 INFO L93 Difference]: Finished difference Result 1138 states and 1623 transitions. [2021-11-07 07:52:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:52:34,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 07:52:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:34,269 INFO L225 Difference]: With dead ends: 1138 [2021-11-07 07:52:34,269 INFO L226 Difference]: Without dead ends: 1134 [2021-11-07 07:52:34,271 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:34,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-07 07:52:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2021-11-07 07:52:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1126 states have (on average 1.4378330373001775) internal successors, (1619), 1133 states have internal predecessors, (1619), 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) [2021-11-07 07:52:34,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1619 transitions. [2021-11-07 07:52:34,466 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1619 transitions. Word has length 45 [2021-11-07 07:52:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:34,467 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1619 transitions. [2021-11-07 07:52:34,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:52:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1619 transitions. [2021-11-07 07:52:34,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 07:52:34,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:34,470 INFO L513 BasicCegarLoop]: 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] [2021-11-07 07:52:34,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 07:52:34,471 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:34,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash -681999990, now seen corresponding path program 1 times [2021-11-07 07:52:34,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:34,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578364989] [2021-11-07 07:52:34,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:34,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:52:34,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:34,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578364989] [2021-11-07 07:52:34,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578364989] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:34,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685151823] [2021-11-07 07:52:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:34,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:34,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:34,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:52:34,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:52:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:35,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:52:35,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:52:35,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685151823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:35,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:52:35,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-07 07:52:35,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718248671] [2021-11-07 07:52:35,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:52:35,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:35,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:52:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:35,791 INFO L87 Difference]: Start difference. First operand 1134 states and 1619 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-11-07 07:52:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:35,966 INFO L93 Difference]: Finished difference Result 2272 states and 3244 transitions. [2021-11-07 07:52:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:52:35,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 46 [2021-11-07 07:52:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:35,970 INFO L225 Difference]: With dead ends: 2272 [2021-11-07 07:52:35,971 INFO L226 Difference]: Without dead ends: 1143 [2021-11-07 07:52:35,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:35,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2021-11-07 07:52:36,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1140. [2021-11-07 07:52:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1132 states have (on average 1.435512367491166) internal successors, (1625), 1139 states have internal predecessors, (1625), 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) [2021-11-07 07:52:36,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1625 transitions. [2021-11-07 07:52:36,072 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1625 transitions. Word has length 46 [2021-11-07 07:52:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:36,073 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1625 transitions. [2021-11-07 07:52:36,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-11-07 07:52:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1625 transitions. [2021-11-07 07:52:36,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 07:52:36,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:36,082 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:36,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:36,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-07 07:52:36,295 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:36,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:36,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1543898448, now seen corresponding path program 2 times [2021-11-07 07:52:36,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:36,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680144053] [2021-11-07 07:52:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:36,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 07:52:36,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:36,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680144053] [2021-11-07 07:52:36,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680144053] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:36,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072076439] [2021-11-07 07:52:36,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:52:36,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:36,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:36,476 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:52:36,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:52:37,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 07:52:37,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:52:37,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:52:37,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 07:52:37,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072076439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:37,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:52:37,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-07 07:52:37,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090744215] [2021-11-07 07:52:37,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:37,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:37,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:37,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:52:37,895 INFO L87 Difference]: Start difference. First operand 1140 states and 1625 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-07 07:52:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:38,129 INFO L93 Difference]: Finished difference Result 1654 states and 2367 transitions. [2021-11-07 07:52:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:38,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 52 [2021-11-07 07:52:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:38,138 INFO L225 Difference]: With dead ends: 1654 [2021-11-07 07:52:38,139 INFO L226 Difference]: Without dead ends: 1143 [2021-11-07 07:52:38,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:52:38,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2021-11-07 07:52:38,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1143. [2021-11-07 07:52:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1135 states have (on average 1.4343612334801763) internal successors, (1628), 1142 states have internal predecessors, (1628), 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) [2021-11-07 07:52:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1628 transitions. [2021-11-07 07:52:38,246 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1628 transitions. Word has length 52 [2021-11-07 07:52:38,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:38,247 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 1628 transitions. [2021-11-07 07:52:38,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-07 07:52:38,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1628 transitions. [2021-11-07 07:52:38,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 07:52:38,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:38,255 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:38,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:38,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-07 07:52:38,471 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:38,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:38,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1327704500, now seen corresponding path program 1 times [2021-11-07 07:52:38,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:38,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673291799] [2021-11-07 07:52:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:38,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 07:52:38,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:38,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673291799] [2021-11-07 07:52:38,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673291799] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:38,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371969933] [2021-11-07 07:52:38,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:38,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:38,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:38,665 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:52:38,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:52:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:39,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:52:39,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 07:52:39,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371969933] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:39,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:52:39,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-07 07:52:39,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853097790] [2021-11-07 07:52:39,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:52:39,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:52:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:52:39,885 INFO L87 Difference]: Start difference. First operand 1143 states and 1628 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-11-07 07:52:40,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:40,118 INFO L93 Difference]: Finished difference Result 2288 states and 3260 transitions. [2021-11-07 07:52:40,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:52:40,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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 [2021-11-07 07:52:40,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:40,124 INFO L225 Difference]: With dead ends: 2288 [2021-11-07 07:52:40,124 INFO L226 Difference]: Without dead ends: 1152 [2021-11-07 07:52:40,127 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:52:40,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-11-07 07:52:40,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1149. [2021-11-07 07:52:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1141 states have (on average 1.432077125328659) internal successors, (1634), 1148 states have internal predecessors, (1634), 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) [2021-11-07 07:52:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1634 transitions. [2021-11-07 07:52:40,243 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1634 transitions. Word has length 53 [2021-11-07 07:52:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:40,244 INFO L470 AbstractCegarLoop]: Abstraction has 1149 states and 1634 transitions. [2021-11-07 07:52:40,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-11-07 07:52:40,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1634 transitions. [2021-11-07 07:52:40,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 07:52:40,247 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:40,247 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:40,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:40,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-07 07:52:40,463 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:40,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2101984046, now seen corresponding path program 2 times [2021-11-07 07:52:40,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:40,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246735452] [2021-11-07 07:52:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:40,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-07 07:52:40,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:40,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246735452] [2021-11-07 07:52:40,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246735452] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:40,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293546221] [2021-11-07 07:52:40,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:52:40,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:40,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:40,659 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:52:40,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:52:42,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:52:42,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:52:42,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 07:52:42,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 07:52:42,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293546221] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:42,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:52:42,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-07 07:52:42,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540458459] [2021-11-07 07:52:42,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:52:42,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:42,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:52:42,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:52:42,927 INFO L87 Difference]: Start difference. First operand 1149 states and 1634 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2021-11-07 07:52:43,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:43,303 INFO L93 Difference]: Finished difference Result 2298 states and 3270 transitions. [2021-11-07 07:52:43,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:52:43,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 59 [2021-11-07 07:52:43,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:43,308 INFO L225 Difference]: With dead ends: 2298 [2021-11-07 07:52:43,308 INFO L226 Difference]: Without dead ends: 1158 [2021-11-07 07:52:43,310 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:52:43,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-11-07 07:52:43,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1155. [2021-11-07 07:52:43,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1147 states have (on average 1.4298169136878813) internal successors, (1640), 1154 states have internal predecessors, (1640), 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) [2021-11-07 07:52:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1640 transitions. [2021-11-07 07:52:43,404 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1640 transitions. Word has length 59 [2021-11-07 07:52:43,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:43,404 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1640 transitions. [2021-11-07 07:52:43,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2021-11-07 07:52:43,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1640 transitions. [2021-11-07 07:52:43,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 07:52:43,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:43,408 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:43,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:43,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-07 07:52:43,623 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:43,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2088995112, now seen corresponding path program 3 times [2021-11-07 07:52:43,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:43,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032635735] [2021-11-07 07:52:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:43,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-07 07:52:43,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:43,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032635735] [2021-11-07 07:52:43,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032635735] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:43,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843981445] [2021-11-07 07:52:43,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:52:43,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:43,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:43,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:52:43,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:52:45,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 07:52:45,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:52:45,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:52:45,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-07 07:52:45,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843981445] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:45,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:52:45,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 9 [2021-11-07 07:52:45,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753608780] [2021-11-07 07:52:45,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:52:45,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:45,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:52:45,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:52:45,844 INFO L87 Difference]: Start difference. First operand 1155 states and 1640 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 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) [2021-11-07 07:52:46,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:46,514 INFO L93 Difference]: Finished difference Result 2311 states and 3286 transitions. [2021-11-07 07:52:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:52:46,515 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 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 65 [2021-11-07 07:52:46,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:46,519 INFO L225 Difference]: With dead ends: 2311 [2021-11-07 07:52:46,519 INFO L226 Difference]: Without dead ends: 1167 [2021-11-07 07:52:46,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:52:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-11-07 07:52:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1164. [2021-11-07 07:52:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1156 states have (on average 1.4264705882352942) internal successors, (1649), 1163 states have internal predecessors, (1649), 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) [2021-11-07 07:52:46,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1649 transitions. [2021-11-07 07:52:46,614 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1649 transitions. Word has length 65 [2021-11-07 07:52:46,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:46,615 INFO L470 AbstractCegarLoop]: Abstraction has 1164 states and 1649 transitions. [2021-11-07 07:52:46,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 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) [2021-11-07 07:52:46,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1649 transitions. [2021-11-07 07:52:46,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 07:52:46,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:46,619 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:46,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:46,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:46,832 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:46,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:46,833 INFO L85 PathProgramCache]: Analyzing trace with hash 978965440, now seen corresponding path program 1 times [2021-11-07 07:52:46,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:46,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652037775] [2021-11-07 07:52:46,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:46,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-07 07:52:46,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:46,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652037775] [2021-11-07 07:52:46,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652037775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:46,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:46,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:52:46,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53111016] [2021-11-07 07:52:46,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:52:46,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:46,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:52:46,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:52:46,995 INFO L87 Difference]: Start difference. First operand 1164 states and 1649 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2021-11-07 07:52:52,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:52,485 INFO L93 Difference]: Finished difference Result 1708 states and 2441 transitions. [2021-11-07 07:52:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:52:52,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 71 [2021-11-07 07:52:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:52,497 INFO L225 Difference]: With dead ends: 1708 [2021-11-07 07:52:52,497 INFO L226 Difference]: Without dead ends: 1553 [2021-11-07 07:52:52,499 INFO L786 BasicCegarLoop]: 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 [2021-11-07 07:52:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-11-07 07:52:52,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1164. [2021-11-07 07:52:52,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1156 states have (on average 1.4178200692041523) internal successors, (1639), 1163 states have internal predecessors, (1639), 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) [2021-11-07 07:52:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1639 transitions. [2021-11-07 07:52:52,700 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1639 transitions. Word has length 71 [2021-11-07 07:52:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:52,701 INFO L470 AbstractCegarLoop]: Abstraction has 1164 states and 1639 transitions. [2021-11-07 07:52:52,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2021-11-07 07:52:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1639 transitions. [2021-11-07 07:52:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 07:52:52,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:52,705 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:52,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 07:52:52,707 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash 161316990, now seen corresponding path program 1 times [2021-11-07 07:52:52,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:52,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729622096] [2021-11-07 07:52:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:52,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-07 07:52:52,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:52,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729622096] [2021-11-07 07:52:52,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729622096] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:52,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313674330] [2021-11-07 07:52:52,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:52,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:52,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:52,991 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:52:53,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 07:52:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:54,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:52:54,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 07:52:54,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313674330] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:54,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:52:54,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 9 [2021-11-07 07:52:54,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957718336] [2021-11-07 07:52:54,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:52:54,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:54,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:52:54,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:52:54,774 INFO L87 Difference]: Start difference. First operand 1164 states and 1639 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 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) [2021-11-07 07:52:55,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:55,226 INFO L93 Difference]: Finished difference Result 2328 states and 3284 transitions. [2021-11-07 07:52:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:52:55,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 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) Word has length 71 [2021-11-07 07:52:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:55,231 INFO L225 Difference]: With dead ends: 2328 [2021-11-07 07:52:55,231 INFO L226 Difference]: Without dead ends: 1177 [2021-11-07 07:52:55,234 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:52:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-11-07 07:52:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1174. [2021-11-07 07:52:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1166 states have (on average 1.414236706689537) internal successors, (1649), 1173 states have internal predecessors, (1649), 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) [2021-11-07 07:52:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1649 transitions. [2021-11-07 07:52:55,326 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1649 transitions. Word has length 71 [2021-11-07 07:52:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:55,326 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1649 transitions. [2021-11-07 07:52:55,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 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) [2021-11-07 07:52:55,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1649 transitions. [2021-11-07 07:52:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 07:52:55,330 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:55,330 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:55,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:55,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 07:52:55,531 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr85ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash 481207425, now seen corresponding path program 1 times [2021-11-07 07:52:55,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:55,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213758146] [2021-11-07 07:52:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:55,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-07 07:52:55,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:55,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213758146] [2021-11-07 07:52:55,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213758146] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:55,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551662828] [2021-11-07 07:52:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:55,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:55,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:55,795 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:52:55,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 07:52:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:56,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 07:52:56,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:52:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-07 07:52:56,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551662828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:56,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:52:56,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-07 07:52:56,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959753347] [2021-11-07 07:52:56,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:52:56,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:56,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:52:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:52:56,690 INFO L87 Difference]: Start difference. First operand 1174 states and 1649 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-11-07 07:52:58,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:58,027 INFO L93 Difference]: Finished difference Result 1202 states and 1676 transitions. [2021-11-07 07:52:58,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:52:58,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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 77 [2021-11-07 07:52:58,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:58,032 INFO L225 Difference]: With dead ends: 1202 [2021-11-07 07:52:58,033 INFO L226 Difference]: Without dead ends: 1159 [2021-11-07 07:52:58,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:52:58,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-11-07 07:52:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1142. [2021-11-07 07:52:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1134 states have (on average 1.4206349206349207) internal successors, (1611), 1141 states have internal predecessors, (1611), 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) [2021-11-07 07:52:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1611 transitions. [2021-11-07 07:52:58,160 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1611 transitions. Word has length 77 [2021-11-07 07:52:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:58,161 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 1611 transitions. [2021-11-07 07:52:58,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-11-07 07:52:58,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1611 transitions. [2021-11-07 07:52:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 07:52:58,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:58,166 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:52:58,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:52:58,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 07:52:58,379 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:58,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1624451979, now seen corresponding path program 1 times [2021-11-07 07:52:58,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:58,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714365869] [2021-11-07 07:52:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:58,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-07 07:52:58,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:58,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714365869] [2021-11-07 07:52:58,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714365869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:58,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:58,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:52:58,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257789569] [2021-11-07 07:52:58,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:52:58,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:58,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:52:58,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:52:58,672 INFO L87 Difference]: Start difference. First operand 1142 states and 1611 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-11-07 07:52:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:59,384 INFO L93 Difference]: Finished difference Result 1681 states and 2412 transitions. [2021-11-07 07:52:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:52:59,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 77 [2021-11-07 07:52:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:59,389 INFO L225 Difference]: With dead ends: 1681 [2021-11-07 07:52:59,389 INFO L226 Difference]: Without dead ends: 1348 [2021-11-07 07:52:59,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:52:59,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-11-07 07:52:59,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1162. [2021-11-07 07:52:59,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1154 states have (on average 1.4168110918544194) internal successors, (1635), 1161 states have internal predecessors, (1635), 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) [2021-11-07 07:52:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1635 transitions. [2021-11-07 07:52:59,493 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1635 transitions. Word has length 77 [2021-11-07 07:52:59,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:59,494 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1635 transitions. [2021-11-07 07:52:59,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2021-11-07 07:52:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1635 transitions. [2021-11-07 07:52:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 07:52:59,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:59,498 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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] [2021-11-07 07:52:59,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 07:52:59,499 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:52:59,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:59,499 INFO L85 PathProgramCache]: Analyzing trace with hash -885490200, now seen corresponding path program 4 times [2021-11-07 07:52:59,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:59,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766804139] [2021-11-07 07:52:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:59,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-07 07:52:59,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:59,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766804139] [2021-11-07 07:52:59,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766804139] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:52:59,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102781068] [2021-11-07 07:52:59,803 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:52:59,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:52:59,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:59,807 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:52:59,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 07:53:01,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:53:01,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:53:01,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-07 07:53:01,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:53:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:53:01,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102781068] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:53:01,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:53:01,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-11-07 07:53:01,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574529148] [2021-11-07 07:53:01,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:53:01,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:53:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:53:01,810 INFO L87 Difference]: Start difference. First operand 1162 states and 1635 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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) [2021-11-07 07:53:02,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:02,401 INFO L93 Difference]: Finished difference Result 2318 states and 3266 transitions. [2021-11-07 07:53:02,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:53:02,402 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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 78 [2021-11-07 07:53:02,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:02,405 INFO L225 Difference]: With dead ends: 2318 [2021-11-07 07:53:02,406 INFO L226 Difference]: Without dead ends: 1171 [2021-11-07 07:53:02,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:53:02,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-11-07 07:53:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1168. [2021-11-07 07:53:02,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1160 states have (on average 1.414655172413793) internal successors, (1641), 1167 states have internal predecessors, (1641), 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) [2021-11-07 07:53:02,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1641 transitions. [2021-11-07 07:53:02,512 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1641 transitions. Word has length 78 [2021-11-07 07:53:02,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:02,513 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 1641 transitions. [2021-11-07 07:53:02,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 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) [2021-11-07 07:53:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1641 transitions. [2021-11-07 07:53:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 07:53:02,516 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:02,517 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 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] [2021-11-07 07:53:02,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:53:02,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:53:02,731 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 83 more)] === [2021-11-07 07:53:02,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1636193874, now seen corresponding path program 5 times [2021-11-07 07:53:02,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:02,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516586074] [2021-11-07 07:53:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:02,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-07 07:53:03,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:03,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516586074] [2021-11-07 07:53:03,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516586074] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:53:03,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422375538] [2021-11-07 07:53:03,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:53:03,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:53:03,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:53:03,115 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:53:03,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c15dbcf-5469-4ab8-b611-cabde24423f4/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process