./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-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_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/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_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/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_c0bcd56c-45ff-493b-a24b-fe544b44c889/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 cd7d66127097bee693df60b26ad836789e8e18ef088953d4d01590e6c82035a4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:29:55,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:29:55,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:29:55,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:29:55,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:29:55,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:29:55,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:29:55,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:29:55,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:29:55,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:29:55,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:29:55,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:29:55,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:29:55,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:29:55,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:29:55,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:29:55,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:29:55,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:29:55,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:29:55,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:29:55,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:29:55,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:29:55,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:29:55,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:29:55,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:29:55,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:29:55,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:29:55,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:29:55,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:29:55,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:29:55,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:29:55,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:29:55,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:29:55,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:29:55,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:29:55,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:29:55,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:29:55,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:29:55,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:29:55,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:29:55,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:29:55,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:29:55,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:29:55,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:29:55,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:29:55,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:29:55,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:29:55,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:29:55,922 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:29:55,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:29:55,922 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:29:55,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:29:55,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:29:55,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:29:55,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:29:55,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:29:55,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:29:55,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:29:55,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:29:55,925 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:29:55,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:29:55,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:29:55,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:29:55,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:29:55,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:55,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:29:55,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:29:55,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:29:55,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:29:55,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:29:55,928 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:29:55,929 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:29:55,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:29:55,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:29:55,930 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_c0bcd56c-45ff-493b-a24b-fe544b44c889/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd7d66127097bee693df60b26ad836789e8e18ef088953d4d01590e6c82035a4 [2021-11-09 08:29:56,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:29:56,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:29:56,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:29:56,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:29:56,232 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:29:56,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-09 08:29:56,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX/data/dbf343b9d/9abae304a801416f84a12ccf27a86287/FLAG34e164f4e [2021-11-09 08:29:56,927 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:29:56,931 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-09 08:29:56,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX/data/dbf343b9d/9abae304a801416f84a12ccf27a86287/FLAG34e164f4e [2021-11-09 08:29:57,208 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX/data/dbf343b9d/9abae304a801416f84a12ccf27a86287 [2021-11-09 08:29:57,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:29:57,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:29:57,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:57,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:29:57,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:29:57,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6513e621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57, skipping insertion in model container [2021-11-09 08:29:57,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:29:57,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:57,629 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_c0bcd56c-45ff-493b-a24b-fe544b44c889/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7669,7682] [2021-11-09 08:29:57,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:57,711 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:29:57,768 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_c0bcd56c-45ff-493b-a24b-fe544b44c889/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7669,7682] [2021-11-09 08:29:57,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:57,823 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:29:57,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57 WrapperNode [2021-11-09 08:29:57,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:57,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:57,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:29:57,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:29:57,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:57,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:29:57,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:29:57,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:29:57,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:58,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:29:58,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:29:58,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:29:58,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:29:58,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:58,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:58,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0bcd56c-45ff-493b-a24b-fe544b44c889/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:29:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:29:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:29:58,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:29:58,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:29:58,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:29:58,901 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 08:29:58,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:58 BoogieIcfgContainer [2021-11-09 08:29:58,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:29:58,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:29:58,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:29:58,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:29:58,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:29:57" (1/3) ... [2021-11-09 08:29:58,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c7d38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:29:58, skipping insertion in model container [2021-11-09 08:29:58,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (2/3) ... [2021-11-09 08:29:58,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c7d38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:29:58, skipping insertion in model container [2021-11-09 08:29:58,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:58" (3/3) ... [2021-11-09 08:29:58,911 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-11-09 08:29:58,917 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:29:58,917 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:29:58,970 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:29:58,977 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 08:29:58,977 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:29:58,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 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 08:29:59,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-09 08:29:59,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:59,008 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] [2021-11-09 08:29:59,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:29:59,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:59,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2006546999, now seen corresponding path program 1 times [2021-11-09 08:29:59,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:59,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359646869] [2021-11-09 08:29:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:59,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:59,465 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 08:29:59,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:59,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359646869] [2021-11-09 08:29:59,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359646869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:59,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:59,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:29:59,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341703842] [2021-11-09 08:29:59,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:29:59,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:59,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:29:59,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:29:59,502 INFO L87 Difference]: Start difference. First operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:59,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:59,620 INFO L93 Difference]: Finished difference Result 300 states and 490 transitions. [2021-11-09 08:29:59,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:29:59,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-09 08:29:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:59,641 INFO L225 Difference]: With dead ends: 300 [2021-11-09 08:29:59,642 INFO L226 Difference]: Without dead ends: 209 [2021-11-09 08:29:59,646 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 08:29:59,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-09 08:29:59,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2021-11-09 08:29:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4466019417475728) internal successors, (298), 206 states have internal predecessors, (298), 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 08:29:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 298 transitions. [2021-11-09 08:29:59,739 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 298 transitions. Word has length 87 [2021-11-09 08:29:59,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:29:59,741 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 298 transitions. [2021-11-09 08:29:59,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:59,742 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 298 transitions. [2021-11-09 08:29:59,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-09 08:29:59,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:29:59,753 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] [2021-11-09 08:29:59,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:29:59,754 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:29:59,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:59,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1559740613, now seen corresponding path program 1 times [2021-11-09 08:29:59,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:59,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473422837] [2021-11-09 08:29:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:59,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:59,927 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 08:29:59,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:59,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473422837] [2021-11-09 08:29:59,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473422837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:59,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:59,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:29:59,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403443650] [2021-11-09 08:29:59,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:29:59,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:29:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:29:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:29:59,932 INFO L87 Difference]: Start difference. First operand 207 states and 298 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 08:29:59,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:29:59,975 INFO L93 Difference]: Finished difference Result 499 states and 762 transitions. [2021-11-09 08:29:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:29:59,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-11-09 08:29:59,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:29:59,979 INFO L225 Difference]: With dead ends: 499 [2021-11-09 08:29:59,979 INFO L226 Difference]: Without dead ends: 345 [2021-11-09 08:29:59,981 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 08:29:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-09 08:30:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2021-11-09 08:30:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 342 states have internal predecessors, (514), 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 08:30:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 514 transitions. [2021-11-09 08:30:00,023 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 514 transitions. Word has length 88 [2021-11-09 08:30:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:00,031 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 514 transitions. [2021-11-09 08:30:00,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 08:30:00,031 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 514 transitions. [2021-11-09 08:30:00,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-09 08:30:00,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:00,036 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] [2021-11-09 08:30:00,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:30:00,037 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:00,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:00,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1480148747, now seen corresponding path program 1 times [2021-11-09 08:30:00,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:00,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974440548] [2021-11-09 08:30:00,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:00,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:00,230 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 08:30:00,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:00,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974440548] [2021-11-09 08:30:00,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974440548] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:00,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:00,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:00,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939854027] [2021-11-09 08:30:00,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:00,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:00,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:00,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:00,241 INFO L87 Difference]: Start difference. First operand 343 states and 514 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 08:30:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:00,325 INFO L93 Difference]: Finished difference Result 891 states and 1384 transitions. [2021-11-09 08:30:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:00,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-11-09 08:30:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:00,335 INFO L225 Difference]: With dead ends: 891 [2021-11-09 08:30:00,335 INFO L226 Difference]: Without dead ends: 601 [2021-11-09 08:30:00,340 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 08:30:00,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-09 08:30:00,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2021-11-09 08:30:00,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.5351170568561874) internal successors, (918), 598 states have internal predecessors, (918), 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 08:30:00,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 918 transitions. [2021-11-09 08:30:00,390 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 918 transitions. Word has length 89 [2021-11-09 08:30:00,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:00,391 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 918 transitions. [2021-11-09 08:30:00,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 08:30:00,391 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 918 transitions. [2021-11-09 08:30:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-09 08:30:00,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:00,393 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] [2021-11-09 08:30:00,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:30:00,393 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:00,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:00,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1142089047, now seen corresponding path program 1 times [2021-11-09 08:30:00,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:00,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255784011] [2021-11-09 08:30:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:00,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:00,483 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 08:30:00,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:00,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255784011] [2021-11-09 08:30:00,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255784011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:00,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:00,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:00,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316934792] [2021-11-09 08:30:00,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:00,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:00,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:00,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:00,492 INFO L87 Difference]: Start difference. First operand 599 states and 918 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 08:30:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:00,571 INFO L93 Difference]: Finished difference Result 1627 states and 2544 transitions. [2021-11-09 08:30:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:00,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2021-11-09 08:30:00,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:00,582 INFO L225 Difference]: With dead ends: 1627 [2021-11-09 08:30:00,582 INFO L226 Difference]: Without dead ends: 1081 [2021-11-09 08:30:00,584 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 08:30:00,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2021-11-09 08:30:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1079. [2021-11-09 08:30:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.549165120593692) internal successors, (1670), 1078 states have internal predecessors, (1670), 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 08:30:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1670 transitions. [2021-11-09 08:30:00,648 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1670 transitions. Word has length 90 [2021-11-09 08:30:00,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:00,649 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 1670 transitions. [2021-11-09 08:30:00,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 08:30:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1670 transitions. [2021-11-09 08:30:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 08:30:00,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:00,656 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] [2021-11-09 08:30:00,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:30:00,657 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:00,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1309607801, now seen corresponding path program 1 times [2021-11-09 08:30:00,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:00,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826754371] [2021-11-09 08:30:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:00,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:00,768 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 08:30:00,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:00,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826754371] [2021-11-09 08:30:00,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826754371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:00,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:00,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:00,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752956445] [2021-11-09 08:30:00,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:00,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:00,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:00,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:00,772 INFO L87 Difference]: Start difference. First operand 1079 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:30:00,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:00,914 INFO L93 Difference]: Finished difference Result 3003 states and 4696 transitions. [2021-11-09 08:30:00,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:00,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2021-11-09 08:30:00,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:00,929 INFO L225 Difference]: With dead ends: 3003 [2021-11-09 08:30:00,930 INFO L226 Difference]: Without dead ends: 1977 [2021-11-09 08:30:00,932 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 08:30:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2021-11-09 08:30:01,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1975. [2021-11-09 08:30:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1974 states have (on average 1.5511651469098278) internal successors, (3062), 1974 states have internal predecessors, (3062), 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 08:30:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3062 transitions. [2021-11-09 08:30:01,092 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3062 transitions. Word has length 91 [2021-11-09 08:30:01,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:01,093 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 3062 transitions. [2021-11-09 08:30:01,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 08:30:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3062 transitions. [2021-11-09 08:30:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-09 08:30:01,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:01,095 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] [2021-11-09 08:30:01,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:30:01,096 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:01,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash 582949359, now seen corresponding path program 1 times [2021-11-09 08:30:01,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:01,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138171756] [2021-11-09 08:30:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:01,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,214 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 08:30:01,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:01,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138171756] [2021-11-09 08:30:01,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138171756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:01,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:01,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:01,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312611983] [2021-11-09 08:30:01,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:01,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:01,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:01,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:01,221 INFO L87 Difference]: Start difference. First operand 1975 states and 3062 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 08:30:01,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:01,476 INFO L93 Difference]: Finished difference Result 5563 states and 8664 transitions. [2021-11-09 08:30:01,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:01,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2021-11-09 08:30:01,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:01,504 INFO L225 Difference]: With dead ends: 5563 [2021-11-09 08:30:01,504 INFO L226 Difference]: Without dead ends: 3641 [2021-11-09 08:30:01,508 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 08:30:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2021-11-09 08:30:01,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 3639. [2021-11-09 08:30:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3638 states have (on average 1.5453545904343045) internal successors, (5622), 3638 states have internal predecessors, (5622), 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 08:30:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5622 transitions. [2021-11-09 08:30:01,752 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5622 transitions. Word has length 92 [2021-11-09 08:30:01,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:01,753 INFO L470 AbstractCegarLoop]: Abstraction has 3639 states and 5622 transitions. [2021-11-09 08:30:01,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 08:30:01,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5622 transitions. [2021-11-09 08:30:01,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:30:01,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:01,755 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] [2021-11-09 08:30:01,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:30:01,755 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:01,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,756 INFO L85 PathProgramCache]: Analyzing trace with hash -496500112, now seen corresponding path program 1 times [2021-11-09 08:30:01,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:01,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136913415] [2021-11-09 08:30:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:01,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,890 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 08:30:01,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:01,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136913415] [2021-11-09 08:30:01,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136913415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:01,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:01,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:30:01,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342580488] [2021-11-09 08:30:01,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:30:01,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:01,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:30:01,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:01,894 INFO L87 Difference]: Start difference. First operand 3639 states and 5622 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 08:30:02,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:02,284 INFO L93 Difference]: Finished difference Result 7225 states and 11191 transitions. [2021-11-09 08:30:02,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:30:02,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 93 [2021-11-09 08:30:02,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:02,308 INFO L225 Difference]: With dead ends: 7225 [2021-11-09 08:30:02,309 INFO L226 Difference]: Without dead ends: 3639 [2021-11-09 08:30:02,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:30:02,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2021-11-09 08:30:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3639. [2021-11-09 08:30:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3638 states have (on average 1.5365585486531061) internal successors, (5590), 3638 states have internal predecessors, (5590), 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 08:30:02,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5590 transitions. [2021-11-09 08:30:02,640 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5590 transitions. Word has length 93 [2021-11-09 08:30:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:02,641 INFO L470 AbstractCegarLoop]: Abstraction has 3639 states and 5590 transitions. [2021-11-09 08:30:02,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 08:30:02,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5590 transitions. [2021-11-09 08:30:02,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:30:02,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:02,643 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] [2021-11-09 08:30:02,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:30:02,643 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:02,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1956436651, now seen corresponding path program 1 times [2021-11-09 08:30:02,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120546977] [2021-11-09 08:30:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,749 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 08:30:02,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:02,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120546977] [2021-11-09 08:30:02,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120546977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:02,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:02,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:30:02,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603362552] [2021-11-09 08:30:02,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:30:02,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:02,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:30:02,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:02,752 INFO L87 Difference]: Start difference. First operand 3639 states and 5590 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 08:30:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:03,436 INFO L93 Difference]: Finished difference Result 10811 states and 16664 transitions. [2021-11-09 08:30:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:30:03,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 93 [2021-11-09 08:30:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:03,485 INFO L225 Difference]: With dead ends: 10811 [2021-11-09 08:30:03,485 INFO L226 Difference]: Without dead ends: 7225 [2021-11-09 08:30:03,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:30:03,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7225 states. [2021-11-09 08:30:04,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7225 to 7223. [2021-11-09 08:30:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7223 states, 7222 states have (on average 1.5317086679590142) internal successors, (11062), 7222 states have internal predecessors, (11062), 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 08:30:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7223 states to 7223 states and 11062 transitions. [2021-11-09 08:30:04,071 INFO L78 Accepts]: Start accepts. Automaton has 7223 states and 11062 transitions. Word has length 93 [2021-11-09 08:30:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:04,071 INFO L470 AbstractCegarLoop]: Abstraction has 7223 states and 11062 transitions. [2021-11-09 08:30:04,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 08:30:04,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7223 states and 11062 transitions. [2021-11-09 08:30:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:30:04,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:04,075 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] [2021-11-09 08:30:04,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:30:04,076 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:04,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash -803132720, now seen corresponding path program 1 times [2021-11-09 08:30:04,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:04,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988564474] [2021-11-09 08:30:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:04,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,204 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 08:30:04,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:04,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988564474] [2021-11-09 08:30:04,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988564474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:04,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:04,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:30:04,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701503782] [2021-11-09 08:30:04,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:30:04,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:04,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:30:04,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:30:04,207 INFO L87 Difference]: Start difference. First operand 7223 states and 11062 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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 08:30:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:05,403 INFO L93 Difference]: Finished difference Result 21499 states and 32952 transitions. [2021-11-09 08:30:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:30:05,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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 93 [2021-11-09 08:30:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:05,489 INFO L225 Difference]: With dead ends: 21499 [2021-11-09 08:30:05,489 INFO L226 Difference]: Without dead ends: 14329 [2021-11-09 08:30:05,506 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:30:05,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14329 states. [2021-11-09 08:30:06,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14329 to 14327. [2021-11-09 08:30:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14327 states, 14326 states have (on average 1.5271534273349154) internal successors, (21878), 14326 states have internal predecessors, (21878), 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 08:30:06,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14327 states to 14327 states and 21878 transitions. [2021-11-09 08:30:06,580 INFO L78 Accepts]: Start accepts. Automaton has 14327 states and 21878 transitions. Word has length 93 [2021-11-09 08:30:06,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:06,581 INFO L470 AbstractCegarLoop]: Abstraction has 14327 states and 21878 transitions. [2021-11-09 08:30:06,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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 08:30:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 14327 states and 21878 transitions. [2021-11-09 08:30:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:30:06,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:06,583 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] [2021-11-09 08:30:06,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:30:06,584 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:06,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:06,585 INFO L85 PathProgramCache]: Analyzing trace with hash 918198155, now seen corresponding path program 1 times [2021-11-09 08:30:06,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:06,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499078886] [2021-11-09 08:30:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:06,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,692 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 08:30:06,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:06,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499078886] [2021-11-09 08:30:06,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499078886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:06,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:06,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:30:06,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55389829] [2021-11-09 08:30:06,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:30:06,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:06,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:30:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:30:06,695 INFO L87 Difference]: Start difference. First operand 14327 states and 21878 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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 08:30:08,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:08,492 INFO L93 Difference]: Finished difference Result 42747 states and 65272 transitions. [2021-11-09 08:30:08,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:30:08,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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 93 [2021-11-09 08:30:08,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:08,582 INFO L225 Difference]: With dead ends: 42747 [2021-11-09 08:30:08,582 INFO L226 Difference]: Without dead ends: 28473 [2021-11-09 08:30:08,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:30:08,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28473 states. [2021-11-09 08:30:10,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28473 to 28471. [2021-11-09 08:30:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28471 states, 28470 states have (on average 1.5215314365999297) internal successors, (43318), 28470 states have internal predecessors, (43318), 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 08:30:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28471 states to 28471 states and 43318 transitions. [2021-11-09 08:30:10,401 INFO L78 Accepts]: Start accepts. Automaton has 28471 states and 43318 transitions. Word has length 93 [2021-11-09 08:30:10,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:10,402 INFO L470 AbstractCegarLoop]: Abstraction has 28471 states and 43318 transitions. [2021-11-09 08:30:10,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 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 08:30:10,402 INFO L276 IsEmpty]: Start isEmpty. Operand 28471 states and 43318 transitions. [2021-11-09 08:30:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:30:10,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:10,404 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] [2021-11-09 08:30:10,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 08:30:10,404 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:10,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:10,405 INFO L85 PathProgramCache]: Analyzing trace with hash -545873402, now seen corresponding path program 1 times [2021-11-09 08:30:10,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:10,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572089566] [2021-11-09 08:30:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:10,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:10,476 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 08:30:10,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:10,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572089566] [2021-11-09 08:30:10,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572089566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:10,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:10,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 08:30:10,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580691062] [2021-11-09 08:30:10,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:30:10,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:10,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:30:10,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:10,480 INFO L87 Difference]: Start difference. First operand 28471 states and 43318 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 08:30:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:12,329 INFO L93 Difference]: Finished difference Result 56889 states and 86583 transitions. [2021-11-09 08:30:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:30:12,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 93 [2021-11-09 08:30:12,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:12,410 INFO L225 Difference]: With dead ends: 56889 [2021-11-09 08:30:12,411 INFO L226 Difference]: Without dead ends: 28471 [2021-11-09 08:30:12,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:30:12,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28471 states. [2021-11-09 08:30:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28471 to 28471. [2021-11-09 08:30:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28471 states, 28470 states have (on average 1.5125395152792414) internal successors, (43062), 28470 states have internal predecessors, (43062), 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 08:30:14,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28471 states to 28471 states and 43062 transitions. [2021-11-09 08:30:14,343 INFO L78 Accepts]: Start accepts. Automaton has 28471 states and 43062 transitions. Word has length 93 [2021-11-09 08:30:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:14,344 INFO L470 AbstractCegarLoop]: Abstraction has 28471 states and 43062 transitions. [2021-11-09 08:30:14,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 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 08:30:14,344 INFO L276 IsEmpty]: Start isEmpty. Operand 28471 states and 43062 transitions. [2021-11-09 08:30:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:30:14,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:14,346 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] [2021-11-09 08:30:14,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 08:30:14,346 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:14,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:14,347 INFO L85 PathProgramCache]: Analyzing trace with hash 727994603, now seen corresponding path program 1 times [2021-11-09 08:30:14,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:14,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384583899] [2021-11-09 08:30:14,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:14,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:14,634 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 08:30:14,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:14,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384583899] [2021-11-09 08:30:14,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384583899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:14,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:14,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:30:14,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752267843] [2021-11-09 08:30:14,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:30:14,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:14,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:30:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:30:14,637 INFO L87 Difference]: Start difference. First operand 28471 states and 43062 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 08:30:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:33,117 INFO L93 Difference]: Finished difference Result 312651 states and 473152 transitions. [2021-11-09 08:30:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 08:30:33,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 93 [2021-11-09 08:30:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:34,157 INFO L225 Difference]: With dead ends: 312651 [2021-11-09 08:30:34,158 INFO L226 Difference]: Without dead ends: 284233 [2021-11-09 08:30:34,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2021-11-09 08:30:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284233 states. [2021-11-09 08:30:41,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284233 to 56887. [2021-11-09 08:30:41,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56887 states, 56886 states have (on average 1.4950251379952888) internal successors, (85046), 56886 states have internal predecessors, (85046), 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 08:30:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56887 states to 56887 states and 85046 transitions. [2021-11-09 08:30:41,832 INFO L78 Accepts]: Start accepts. Automaton has 56887 states and 85046 transitions. Word has length 93 [2021-11-09 08:30:41,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:41,833 INFO L470 AbstractCegarLoop]: Abstraction has 56887 states and 85046 transitions. [2021-11-09 08:30:41,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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 08:30:41,833 INFO L276 IsEmpty]: Start isEmpty. Operand 56887 states and 85046 transitions. [2021-11-09 08:30:41,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-09 08:30:41,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:41,835 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] [2021-11-09 08:30:41,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:30:41,835 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:30:41,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:41,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1398673945, now seen corresponding path program 1 times [2021-11-09 08:30:41,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:41,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996503399] [2021-11-09 08:30:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:41,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:41,902 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 08:30:41,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:41,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996503399] [2021-11-09 08:30:41,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996503399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:41,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:41,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:30:41,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334001672] [2021-11-09 08:30:41,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:41,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:41,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:41,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:41,905 INFO L87 Difference]: Start difference. First operand 56887 states and 85046 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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)