./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX --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 d9dc4c1afb888b23c0ebc469c8090d62842d0a0c5570d5e56681453b5bd49afb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:31:34,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:31:34,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:31:34,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:31:34,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:31:34,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:31:34,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:31:34,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:31:34,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:31:34,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:31:34,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:31:34,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:31:34,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:31:34,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:31:34,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:31:34,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:31:34,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:31:34,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:31:34,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:31:34,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:31:34,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:31:34,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:31:34,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:31:34,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:31:34,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:31:34,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:31:34,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:31:34,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:31:34,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:31:34,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:31:34,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:31:34,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:31:34,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:31:34,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:31:34,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:31:34,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:31:34,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:31:34,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:31:34,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:31:34,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:31:34,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:31:34,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:31:34,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:31:34,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:31:34,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:31:34,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:31:34,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:31:34,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:31:34,803 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:31:34,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:31:34,804 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:31:34,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:31:34,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:31:34,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:31:34,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:31:34,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:31:34,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:31:34,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:31:34,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:31:34,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:31:34,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:31:34,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:31:34,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:31:34,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:31:34,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:31:34,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:31:34,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:31:34,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:31:34,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:31:34,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:31:34,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:31:34,812 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:31:34,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:31:34,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:31:34,813 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_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9dc4c1afb888b23c0ebc469c8090d62842d0a0c5570d5e56681453b5bd49afb [2021-11-09 08:31:35,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:31:35,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:31:35,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:31:35,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:31:35,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:31:35,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2021-11-09 08:31:35,207 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/data/83fb4e12a/bf7eaf0df1d74ce4b61f00ba2ea7d4cb/FLAG0d4dadd04 [2021-11-09 08:31:35,870 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:31:35,870 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2021-11-09 08:31:35,886 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/data/83fb4e12a/bf7eaf0df1d74ce4b61f00ba2ea7d4cb/FLAG0d4dadd04 [2021-11-09 08:31:36,114 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/data/83fb4e12a/bf7eaf0df1d74ce4b61f00ba2ea7d4cb [2021-11-09 08:31:36,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:31:36,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:31:36,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:31:36,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:31:36,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:31:36,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:31:36" (1/1) ... [2021-11-09 08:31:36,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3728fd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:36, skipping insertion in model container [2021-11-09 08:31:36,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:31:36" (1/1) ... [2021-11-09 08:31:36,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:31:36,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:31:36,598 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_dca79a73-c03e-48f7-8823-1609a573e490/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[15364,15377] [2021-11-09 08:31:36,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:31:36,818 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:31:37,023 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_dca79a73-c03e-48f7-8823-1609a573e490/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[15364,15377] [2021-11-09 08:31:37,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:31:37,167 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:31:37,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37 WrapperNode [2021-11-09 08:31:37,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:31:37,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:31:37,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:31:37,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:31:37,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37" (1/1) ... [2021-11-09 08:31:37,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37" (1/1) ... [2021-11-09 08:31:37,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:31:37,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:31:37,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:31:37,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:31:37,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37" (1/1) ... [2021-11-09 08:31:37,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37" (1/1) ... [2021-11-09 08:31:37,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37" (1/1) ... [2021-11-09 08:31:37,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37" (1/1) ... [2021-11-09 08:31:37,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37" (1/1) ... [2021-11-09 08:31:37,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37" (1/1) ... [2021-11-09 08:31:37,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37" (1/1) ... [2021-11-09 08:31:37,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:31:37,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:31:37,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:31:37,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:31:37,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37" (1/1) ... [2021-11-09 08:31:37,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:31:37,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:31:37,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:31:37,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dca79a73-c03e-48f7-8823-1609a573e490/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:31:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:31:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:31:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:31:37,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:31:39,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:31:39,047 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 08:31:39,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:31:39 BoogieIcfgContainer [2021-11-09 08:31:39,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:31:39,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:31:39,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:31:39,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:31:39,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:31:36" (1/3) ... [2021-11-09 08:31:39,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a735f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:31:39, skipping insertion in model container [2021-11-09 08:31:39,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:31:37" (2/3) ... [2021-11-09 08:31:39,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a735f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:31:39, skipping insertion in model container [2021-11-09 08:31:39,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:31:39" (3/3) ... [2021-11-09 08:31:39,063 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2021-11-09 08:31:39,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:31:39,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:31:39,141 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:31:39,149 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 [2021-11-09 08:31:39,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:31:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 487 states, 485 states have (on average 1.6494845360824741) internal successors, (800), 486 states have internal predecessors, (800), 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) [2021-11-09 08:31:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-09 08:31:39,204 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:39,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:39,206 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:31:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1982597538, now seen corresponding path program 1 times [2021-11-09 08:31:39,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:39,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606049547] [2021-11-09 08:31:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:39,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:39,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:39,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606049547] [2021-11-09 08:31:39,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606049547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:39,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:39,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:31:39,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871373558] [2021-11-09 08:31:39,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:31:39,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:31:39,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:31:39,739 INFO L87 Difference]: Start difference. First operand has 487 states, 485 states have (on average 1.6494845360824741) internal successors, (800), 486 states have internal predecessors, (800), 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 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2021-11-09 08:31:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:40,044 INFO L93 Difference]: Finished difference Result 937 states and 1520 transitions. [2021-11-09 08:31:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:31:40,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 119 [2021-11-09 08:31:40,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:40,068 INFO L225 Difference]: With dead ends: 937 [2021-11-09 08:31:40,068 INFO L226 Difference]: Without dead ends: 484 [2021-11-09 08:31:40,077 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 [2021-11-09 08:31:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-09 08:31:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-11-09 08:31:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 1.5486542443064182) internal successors, (748), 483 states have internal predecessors, (748), 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) [2021-11-09 08:31:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 748 transitions. [2021-11-09 08:31:40,173 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 748 transitions. Word has length 119 [2021-11-09 08:31:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:40,174 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 748 transitions. [2021-11-09 08:31:40,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2021-11-09 08:31:40,175 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 748 transitions. [2021-11-09 08:31:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-09 08:31:40,189 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:40,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:40,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:31:40,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:31:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1369129713, now seen corresponding path program 1 times [2021-11-09 08:31:40,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:40,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351848743] [2021-11-09 08:31:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:40,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:40,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:40,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351848743] [2021-11-09 08:31:40,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351848743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:40,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:40,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:31:40,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426570347] [2021-11-09 08:31:40,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:31:40,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:31:40,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:31:40,436 INFO L87 Difference]: Start difference. First operand 484 states and 748 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-09 08:31:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:40,547 INFO L93 Difference]: Finished difference Result 1159 states and 1827 transitions. [2021-11-09 08:31:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:31:40,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 159 [2021-11-09 08:31:40,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:40,561 INFO L225 Difference]: With dead ends: 1159 [2021-11-09 08:31:40,562 INFO L226 Difference]: Without dead ends: 746 [2021-11-09 08:31:40,565 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 [2021-11-09 08:31:40,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-11-09 08:31:40,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2021-11-09 08:31:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 743 states have (on average 1.5625841184387619) internal successors, (1161), 743 states have internal predecessors, (1161), 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) [2021-11-09 08:31:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1161 transitions. [2021-11-09 08:31:40,670 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1161 transitions. Word has length 159 [2021-11-09 08:31:40,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:40,673 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1161 transitions. [2021-11-09 08:31:40,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2021-11-09 08:31:40,673 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1161 transitions. [2021-11-09 08:31:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-09 08:31:40,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:40,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:40,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:31:40,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:31:40,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:40,687 INFO L85 PathProgramCache]: Analyzing trace with hash -319550929, now seen corresponding path program 1 times [2021-11-09 08:31:40,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:40,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891663754] [2021-11-09 08:31:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:40,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:40,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:40,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891663754] [2021-11-09 08:31:40,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891663754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:40,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:40,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:31:40,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342270182] [2021-11-09 08:31:40,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:31:40,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:40,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:31:40,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:31:40,836 INFO L87 Difference]: Start difference. First operand 744 states and 1161 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2021-11-09 08:31:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:40,946 INFO L93 Difference]: Finished difference Result 1863 states and 2947 transitions. [2021-11-09 08:31:40,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:31:40,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161 [2021-11-09 08:31:40,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:40,957 INFO L225 Difference]: With dead ends: 1863 [2021-11-09 08:31:40,958 INFO L226 Difference]: Without dead ends: 1203 [2021-11-09 08:31:40,960 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 [2021-11-09 08:31:40,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-11-09 08:31:41,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2021-11-09 08:31:41,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 1.5708333333333333) internal successors, (1885), 1200 states have internal predecessors, (1885), 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) [2021-11-09 08:31:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1885 transitions. [2021-11-09 08:31:41,032 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1885 transitions. Word has length 161 [2021-11-09 08:31:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:41,033 INFO L470 AbstractCegarLoop]: Abstraction has 1201 states and 1885 transitions. [2021-11-09 08:31:41,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2021-11-09 08:31:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1885 transitions. [2021-11-09 08:31:41,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-09 08:31:41,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:41,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:41,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:31:41,041 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:31:41,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1930829335, now seen corresponding path program 1 times [2021-11-09 08:31:41,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:41,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806705697] [2021-11-09 08:31:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:41,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:41,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:41,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806705697] [2021-11-09 08:31:41,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806705697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:41,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:41,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:31:41,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762337530] [2021-11-09 08:31:41,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:31:41,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:41,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:31:41,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:31:41,255 INFO L87 Difference]: Start difference. First operand 1201 states and 1885 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-11-09 08:31:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:41,415 INFO L93 Difference]: Finished difference Result 3090 states and 4890 transitions. [2021-11-09 08:31:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:31:41,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 163 [2021-11-09 08:31:41,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:41,434 INFO L225 Difference]: With dead ends: 3090 [2021-11-09 08:31:41,434 INFO L226 Difference]: Without dead ends: 1986 [2021-11-09 08:31:41,438 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 [2021-11-09 08:31:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-11-09 08:31:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1984. [2021-11-09 08:31:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1983 states have (on average 1.572869389813414) internal successors, (3119), 1983 states have internal predecessors, (3119), 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) [2021-11-09 08:31:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 3119 transitions. [2021-11-09 08:31:41,588 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 3119 transitions. Word has length 163 [2021-11-09 08:31:41,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:41,589 INFO L470 AbstractCegarLoop]: Abstraction has 1984 states and 3119 transitions. [2021-11-09 08:31:41,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2021-11-09 08:31:41,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 3119 transitions. [2021-11-09 08:31:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-09 08:31:41,597 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:41,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:41,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:31:41,598 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:31:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash -329393929, now seen corresponding path program 1 times [2021-11-09 08:31:41,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:41,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525030992] [2021-11-09 08:31:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:41,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:41,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:41,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525030992] [2021-11-09 08:31:41,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525030992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:41,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:41,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:31:41,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896291259] [2021-11-09 08:31:41,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:31:41,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:41,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:31:41,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:31:41,740 INFO L87 Difference]: Start difference. First operand 1984 states and 3119 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2021-11-09 08:31:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:41,990 INFO L93 Difference]: Finished difference Result 5159 states and 8143 transitions. [2021-11-09 08:31:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:31:41,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 165 [2021-11-09 08:31:41,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:42,017 INFO L225 Difference]: With dead ends: 5159 [2021-11-09 08:31:42,017 INFO L226 Difference]: Without dead ends: 3285 [2021-11-09 08:31:42,021 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 [2021-11-09 08:31:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2021-11-09 08:31:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3283. [2021-11-09 08:31:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3283 states, 3282 states have (on average 1.568860450944546) internal successors, (5149), 3282 states have internal predecessors, (5149), 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) [2021-11-09 08:31:42,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3283 states to 3283 states and 5149 transitions. [2021-11-09 08:31:42,302 INFO L78 Accepts]: Start accepts. Automaton has 3283 states and 5149 transitions. Word has length 165 [2021-11-09 08:31:42,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:42,302 INFO L470 AbstractCegarLoop]: Abstraction has 3283 states and 5149 transitions. [2021-11-09 08:31:42,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2021-11-09 08:31:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3283 states and 5149 transitions. [2021-11-09 08:31:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-09 08:31:42,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:42,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:42,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:31:42,316 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:31:42,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:42,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1942661269, now seen corresponding path program 1 times [2021-11-09 08:31:42,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:42,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661997784] [2021-11-09 08:31:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:42,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:42,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:42,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661997784] [2021-11-09 08:31:42,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661997784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:42,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:42,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:31:42,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315280550] [2021-11-09 08:31:42,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:31:42,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:42,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:31:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:31:42,462 INFO L87 Difference]: Start difference. First operand 3283 states and 5149 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2021-11-09 08:31:42,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:42,848 INFO L93 Difference]: Finished difference Result 8504 states and 13344 transitions. [2021-11-09 08:31:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:31:42,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2021-11-09 08:31:42,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:42,894 INFO L225 Difference]: With dead ends: 8504 [2021-11-09 08:31:42,894 INFO L226 Difference]: Without dead ends: 5344 [2021-11-09 08:31:42,900 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 [2021-11-09 08:31:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2021-11-09 08:31:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 5342. [2021-11-09 08:31:43,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5341 states have (on average 1.5583224115334207) internal successors, (8323), 5341 states have internal predecessors, (8323), 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) [2021-11-09 08:31:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 8323 transitions. [2021-11-09 08:31:43,320 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 8323 transitions. Word has length 167 [2021-11-09 08:31:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:43,322 INFO L470 AbstractCegarLoop]: Abstraction has 5342 states and 8323 transitions. [2021-11-09 08:31:43,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2021-11-09 08:31:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 8323 transitions. [2021-11-09 08:31:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-09 08:31:43,341 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:43,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:43,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:31:43,343 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:31:43,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:43,343 INFO L85 PathProgramCache]: Analyzing trace with hash 667335103, now seen corresponding path program 1 times [2021-11-09 08:31:43,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:43,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45159977] [2021-11-09 08:31:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:43,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:43,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:43,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45159977] [2021-11-09 08:31:43,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45159977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:43,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:43,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:31:43,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648004344] [2021-11-09 08:31:43,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:31:43,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:31:43,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:31:43,720 INFO L87 Difference]: Start difference. First operand 5342 states and 8323 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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) [2021-11-09 08:31:46,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:46,565 INFO L93 Difference]: Finished difference Result 32189 states and 49879 transitions. [2021-11-09 08:31:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:31:46,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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 169 [2021-11-09 08:31:46,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:46,715 INFO L225 Difference]: With dead ends: 32189 [2021-11-09 08:31:46,715 INFO L226 Difference]: Without dead ends: 26964 [2021-11-09 08:31:46,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:31:46,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26964 states. [2021-11-09 08:31:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26964 to 26954. [2021-11-09 08:31:48,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26954 states, 26953 states have (on average 1.5436500575075132) internal successors, (41606), 26953 states have internal predecessors, (41606), 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) [2021-11-09 08:31:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26954 states to 26954 states and 41606 transitions. [2021-11-09 08:31:48,998 INFO L78 Accepts]: Start accepts. Automaton has 26954 states and 41606 transitions. Word has length 169 [2021-11-09 08:31:48,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:48,998 INFO L470 AbstractCegarLoop]: Abstraction has 26954 states and 41606 transitions. [2021-11-09 08:31:48,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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) [2021-11-09 08:31:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 26954 states and 41606 transitions. [2021-11-09 08:31:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-09 08:31:49,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:49,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:49,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:31:49,081 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:31:49,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:49,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2083927149, now seen corresponding path program 1 times [2021-11-09 08:31:49,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:49,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228776867] [2021-11-09 08:31:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:49,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:49,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:49,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228776867] [2021-11-09 08:31:49,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228776867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:49,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:49,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:31:49,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369035674] [2021-11-09 08:31:49,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:31:49,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:49,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:31:49,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:31:49,155 INFO L87 Difference]: Start difference. First operand 26954 states and 41606 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2021-11-09 08:31:51,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:51,884 INFO L93 Difference]: Finished difference Result 76205 states and 117305 transitions. [2021-11-09 08:31:51,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:31:51,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 169 [2021-11-09 08:31:51,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:52,045 INFO L225 Difference]: With dead ends: 76205 [2021-11-09 08:31:52,045 INFO L226 Difference]: Without dead ends: 49305 [2021-11-09 08:31:52,093 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 [2021-11-09 08:31:52,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49305 states. [2021-11-09 08:31:54,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49305 to 49303. [2021-11-09 08:31:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49303 states, 49302 states have (on average 1.5287615106892216) internal successors, (75371), 49302 states have internal predecessors, (75371), 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) [2021-11-09 08:31:54,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49303 states to 49303 states and 75371 transitions. [2021-11-09 08:31:54,922 INFO L78 Accepts]: Start accepts. Automaton has 49303 states and 75371 transitions. Word has length 169 [2021-11-09 08:31:54,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:54,922 INFO L470 AbstractCegarLoop]: Abstraction has 49303 states and 75371 transitions. [2021-11-09 08:31:54,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2021-11-09 08:31:54,923 INFO L276 IsEmpty]: Start isEmpty. Operand 49303 states and 75371 transitions. [2021-11-09 08:31:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-09 08:31:55,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:55,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:31:55,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:31:55,088 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:31:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1875273560, now seen corresponding path program 1 times [2021-11-09 08:31:55,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:31:55,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378619760] [2021-11-09 08:31:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:55,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:31:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:31:55,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:31:55,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378619760] [2021-11-09 08:31:55,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378619760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:55,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:55,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:31:55,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259882991] [2021-11-09 08:31:55,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:31:55,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:31:55,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:31:55,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:31:55,209 INFO L87 Difference]: Start difference. First operand 49303 states and 75371 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2021-11-09 08:31:59,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:59,203 INFO L93 Difference]: Finished difference Result 118431 states and 180999 transitions. [2021-11-09 08:31:59,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:31:59,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2021-11-09 08:31:59,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:59,500 INFO L225 Difference]: With dead ends: 118431 [2021-11-09 08:31:59,501 INFO L226 Difference]: Without dead ends: 84449 [2021-11-09 08:31:59,554 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 [2021-11-09 08:31:59,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84449 states. [2021-11-09 08:32:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84449 to 84447. [2021-11-09 08:32:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84447 states, 84446 states have (on average 1.5184259763635932) internal successors, (128225), 84446 states have internal predecessors, (128225), 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) [2021-11-09 08:32:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84447 states to 84447 states and 128225 transitions. [2021-11-09 08:32:04,263 INFO L78 Accepts]: Start accepts. Automaton has 84447 states and 128225 transitions. Word has length 172 [2021-11-09 08:32:04,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:32:04,263 INFO L470 AbstractCegarLoop]: Abstraction has 84447 states and 128225 transitions. [2021-11-09 08:32:04,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2021-11-09 08:32:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 84447 states and 128225 transitions. [2021-11-09 08:32:04,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-09 08:32:04,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:32:04,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:32:04,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:32:04,406 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:32:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1593707843, now seen corresponding path program 1 times [2021-11-09 08:32:04,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:04,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853970306] [2021-11-09 08:32:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:04,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:04,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:32:04,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853970306] [2021-11-09 08:32:04,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853970306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:32:04,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:32:04,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:32:04,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780454467] [2021-11-09 08:32:04,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:32:04,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:32:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:32:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:32:04,495 INFO L87 Difference]: Start difference. First operand 84447 states and 128225 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2021-11-09 08:32:09,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:09,880 INFO L93 Difference]: Finished difference Result 184645 states and 280219 transitions. [2021-11-09 08:32:09,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:32:09,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2021-11-09 08:32:09,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:32:10,260 INFO L225 Difference]: With dead ends: 184645 [2021-11-09 08:32:10,260 INFO L226 Difference]: Without dead ends: 134827 [2021-11-09 08:32:10,346 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 [2021-11-09 08:32:10,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134827 states. [2021-11-09 08:32:16,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134827 to 134825. [2021-11-09 08:32:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134825 states, 134824 states have (on average 1.5078101821634131) internal successors, (203289), 134824 states have internal predecessors, (203289), 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) [2021-11-09 08:32:17,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134825 states to 134825 states and 203289 transitions. [2021-11-09 08:32:17,418 INFO L78 Accepts]: Start accepts. Automaton has 134825 states and 203289 transitions. Word has length 172 [2021-11-09 08:32:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:32:17,418 INFO L470 AbstractCegarLoop]: Abstraction has 134825 states and 203289 transitions. [2021-11-09 08:32:17,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2021-11-09 08:32:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 134825 states and 203289 transitions. [2021-11-09 08:32:17,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-09 08:32:17,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:32:17,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:32:17,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 08:32:17,646 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:32:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:17,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1669075814, now seen corresponding path program 1 times [2021-11-09 08:32:17,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:32:17,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376555672] [2021-11-09 08:32:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:32:17,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:32:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:32:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:32:17,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:32:17,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376555672] [2021-11-09 08:32:17,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376555672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:32:17,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:32:17,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:32:17,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371370991] [2021-11-09 08:32:17,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:32:17,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:32:17,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:32:17,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:32:17,731 INFO L87 Difference]: Start difference. First operand 134825 states and 203289 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2021-11-09 08:32:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:26,139 INFO L93 Difference]: Finished difference Result 266005 states and 400359 transitions. [2021-11-09 08:32:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:32:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2021-11-09 08:32:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:32:26,593 INFO L225 Difference]: With dead ends: 266005 [2021-11-09 08:32:26,593 INFO L226 Difference]: Without dead ends: 201491 [2021-11-09 08:32:26,682 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 [2021-11-09 08:32:26,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201491 states.