./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa --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 1d2ed0f37ff2caecb0f852b41838696d35f940cfb2007be63d1246f35f6e95b8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:09:36,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:09:36,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:09:36,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:09:36,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:09:36,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:09:36,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:09:36,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:09:36,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:09:36,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:09:36,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:09:36,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:09:36,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:09:36,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:09:36,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:09:36,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:09:36,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:09:36,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:09:36,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:09:36,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:09:36,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:09:36,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:09:36,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:09:36,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:09:36,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:09:36,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:09:36,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:09:36,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:09:36,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:09:36,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:09:36,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:09:36,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:09:36,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:09:36,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:09:36,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:09:36,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:09:36,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:09:36,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:09:36,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:09:36,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:09:36,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:09:36,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:09:36,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:09:36,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:09:36,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:09:36,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:09:36,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:09:36,871 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:09:36,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:09:36,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:09:36,872 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:09:36,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:09:36,872 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:09:36,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:09:36,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:09:36,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:09:36,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:09:36,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:09:36,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:09:36,873 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:09:36,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:09:36,873 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:09:36,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:09:36,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:09:36,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:09:36,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:09:36,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:09:36,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:09:36,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:09:36,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:09:36,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:09:36,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:09:36,874 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:09:36,874 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:09:36,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:09:36,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:09:36,874 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_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d2ed0f37ff2caecb0f852b41838696d35f940cfb2007be63d1246f35f6e95b8 [2021-12-06 20:09:37,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:09:37,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:09:37,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:09:37,099 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:09:37,099 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:09:37,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-06 20:09:37,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/data/82271dac4/81e3f66a2dde459499c3cf81f6bc2789/FLAG8ce88f073 [2021-12-06 20:09:37,585 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:09:37,586 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-06 20:09:37,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/data/82271dac4/81e3f66a2dde459499c3cf81f6bc2789/FLAG8ce88f073 [2021-12-06 20:09:37,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/data/82271dac4/81e3f66a2dde459499c3cf81f6bc2789 [2021-12-06 20:09:37,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:09:37,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:09:37,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:09:37,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:09:37,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:09:37,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:09:37" (1/1) ... [2021-12-06 20:09:37,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f6ec72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:37, skipping insertion in model container [2021-12-06 20:09:37,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:09:37" (1/1) ... [2021-12-06 20:09:37,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:09:37,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:09:37,879 WARN L230 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_a443e7e4-45ad-4d04-9754-956842eaba96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[14220,14233] [2021-12-06 20:09:37,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:09:37,936 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:09:38,009 WARN L230 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_a443e7e4-45ad-4d04-9754-956842eaba96/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[14220,14233] [2021-12-06 20:09:38,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:09:38,054 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:09:38,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38 WrapperNode [2021-12-06 20:09:38,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:09:38,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:09:38,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:09:38,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:09:38,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38" (1/1) ... [2021-12-06 20:09:38,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38" (1/1) ... [2021-12-06 20:09:38,111 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1196 [2021-12-06 20:09:38,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:09:38,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:09:38,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:09:38,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:09:38,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38" (1/1) ... [2021-12-06 20:09:38,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38" (1/1) ... [2021-12-06 20:09:38,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38" (1/1) ... [2021-12-06 20:09:38,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38" (1/1) ... [2021-12-06 20:09:38,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38" (1/1) ... [2021-12-06 20:09:38,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38" (1/1) ... [2021-12-06 20:09:38,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38" (1/1) ... [2021-12-06 20:09:38,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:09:38,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:09:38,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:09:38,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:09:38,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38" (1/1) ... [2021-12-06 20:09:38,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:09:38,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:09:38,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:09:38,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a443e7e4-45ad-4d04-9754-956842eaba96/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:09:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:09:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:09:38,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:09:38,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:09:38,308 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:09:38,310 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:09:38,870 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:09:38,877 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:09:38,878 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 20:09:38,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:09:38 BoogieIcfgContainer [2021-12-06 20:09:38,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:09:38,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:09:38,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:09:38,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:09:38,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:09:37" (1/3) ... [2021-12-06 20:09:38,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404b4bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:09:38, skipping insertion in model container [2021-12-06 20:09:38,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:09:38" (2/3) ... [2021-12-06 20:09:38,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404b4bf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:09:38, skipping insertion in model container [2021-12-06 20:09:38,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:09:38" (3/3) ... [2021-12-06 20:09:38,886 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-06 20:09:38,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:09:38,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:09:38,926 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:09:38,931 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 [2021-12-06 20:09:38,931 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:09:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 329 states have (on average 1.662613981762918) internal successors, (547), 330 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 20:09:38,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:38,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:38,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:38,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:38,965 INFO L85 PathProgramCache]: Analyzing trace with hash -921581839, now seen corresponding path program 1 times [2021-12-06 20:09:38,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:38,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327404166] [2021-12-06 20:09:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:38,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:39,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:39,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327404166] [2021-12-06 20:09:39,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327404166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:39,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:39,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:09:39,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952495900] [2021-12-06 20:09:39,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:39,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:09:39,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:39,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:09:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:09:39,218 INFO L87 Difference]: Start difference. First operand has 331 states, 329 states have (on average 1.662613981762918) internal successors, (547), 330 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:39,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:39,357 INFO L93 Difference]: Finished difference Result 635 states and 1034 transitions. [2021-12-06 20:09:39,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:09:39,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-12-06 20:09:39,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:39,369 INFO L225 Difference]: With dead ends: 635 [2021-12-06 20:09:39,369 INFO L226 Difference]: Without dead ends: 328 [2021-12-06 20:09:39,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:09:39,374 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 102 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:39,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1485 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:09:39,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-12-06 20:09:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-12-06 20:09:39,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.5382262996941896) internal successors, (503), 327 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 503 transitions. [2021-12-06 20:09:39,420 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 503 transitions. Word has length 127 [2021-12-06 20:09:39,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:39,420 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 503 transitions. [2021-12-06 20:09:39,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:39,421 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 503 transitions. [2021-12-06 20:09:39,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 20:09:39,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:39,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:39,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:09:39,428 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:39,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:39,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1893560185, now seen corresponding path program 1 times [2021-12-06 20:09:39,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:39,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492631537] [2021-12-06 20:09:39,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:39,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:39,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:39,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492631537] [2021-12-06 20:09:39,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492631537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:39,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:39,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:09:39,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645943657] [2021-12-06 20:09:39,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:39,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:09:39,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:39,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:09:39,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:09:39,558 INFO L87 Difference]: Start difference. First operand 328 states and 503 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:39,617 INFO L93 Difference]: Finished difference Result 812 states and 1275 transitions. [2021-12-06 20:09:39,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:09:39,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2021-12-06 20:09:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:39,621 INFO L225 Difference]: With dead ends: 812 [2021-12-06 20:09:39,621 INFO L226 Difference]: Without dead ends: 525 [2021-12-06 20:09:39,622 INFO L932 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 [2021-12-06 20:09:39,623 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 343 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:39,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 911 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:09:39,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-12-06 20:09:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 523. [2021-12-06 20:09:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 1.553639846743295) internal successors, (811), 522 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 811 transitions. [2021-12-06 20:09:39,659 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 811 transitions. Word has length 157 [2021-12-06 20:09:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:39,659 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 811 transitions. [2021-12-06 20:09:39,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 811 transitions. [2021-12-06 20:09:39,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 20:09:39,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:39,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:39,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:09:39,664 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:39,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash -36033449, now seen corresponding path program 1 times [2021-12-06 20:09:39,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:39,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014011202] [2021-12-06 20:09:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:39,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:39,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:39,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014011202] [2021-12-06 20:09:39,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014011202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:39,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:39,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:09:39,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009235319] [2021-12-06 20:09:39,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:39,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:09:39,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:09:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:09:39,744 INFO L87 Difference]: Start difference. First operand 523 states and 811 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:39,800 INFO L93 Difference]: Finished difference Result 1351 states and 2128 transitions. [2021-12-06 20:09:39,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:09:39,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2021-12-06 20:09:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:39,805 INFO L225 Difference]: With dead ends: 1351 [2021-12-06 20:09:39,806 INFO L226 Difference]: Without dead ends: 875 [2021-12-06 20:09:39,807 INFO L932 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 [2021-12-06 20:09:39,808 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 330 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:39,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 891 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:09:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-12-06 20:09:39,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2021-12-06 20:09:39,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5607798165137614) internal successors, (1361), 872 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1361 transitions. [2021-12-06 20:09:39,841 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1361 transitions. Word has length 160 [2021-12-06 20:09:39,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:39,842 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1361 transitions. [2021-12-06 20:09:39,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:39,842 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1361 transitions. [2021-12-06 20:09:39,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 20:09:39,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:39,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:39,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:09:39,846 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:39,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:39,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1343698436, now seen corresponding path program 1 times [2021-12-06 20:09:39,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:39,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016513348] [2021-12-06 20:09:39,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:39,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:39,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:39,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016513348] [2021-12-06 20:09:39,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016513348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:39,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:39,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:09:39,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599997903] [2021-12-06 20:09:39,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:39,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:09:39,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:39,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:09:39,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:09:39,936 INFO L87 Difference]: Start difference. First operand 873 states and 1361 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:40,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:40,004 INFO L93 Difference]: Finished difference Result 2311 states and 3636 transitions. [2021-12-06 20:09:40,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:09:40,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-12-06 20:09:40,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:40,012 INFO L225 Difference]: With dead ends: 2311 [2021-12-06 20:09:40,012 INFO L226 Difference]: Without dead ends: 1491 [2021-12-06 20:09:40,014 INFO L932 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 [2021-12-06 20:09:40,015 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 316 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:40,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 997 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:09:40,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2021-12-06 20:09:40,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1489. [2021-12-06 20:09:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1488 states have (on average 1.5598118279569892) internal successors, (2321), 1488 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2321 transitions. [2021-12-06 20:09:40,080 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2321 transitions. Word has length 163 [2021-12-06 20:09:40,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:40,080 INFO L470 AbstractCegarLoop]: Abstraction has 1489 states and 2321 transitions. [2021-12-06 20:09:40,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:40,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2321 transitions. [2021-12-06 20:09:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-06 20:09:40,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:40,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:40,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:09:40,087 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:40,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1889923693, now seen corresponding path program 1 times [2021-12-06 20:09:40,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:40,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638437264] [2021-12-06 20:09:40,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:40,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:40,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:40,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638437264] [2021-12-06 20:09:40,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638437264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:40,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:40,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:09:40,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218439349] [2021-12-06 20:09:40,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:40,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:09:40,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:40,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:09:40,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:09:40,145 INFO L87 Difference]: Start difference. First operand 1489 states and 2321 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:40,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:40,241 INFO L93 Difference]: Finished difference Result 3981 states and 6232 transitions. [2021-12-06 20:09:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:09:40,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-12-06 20:09:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:40,253 INFO L225 Difference]: With dead ends: 3981 [2021-12-06 20:09:40,253 INFO L226 Difference]: Without dead ends: 2551 [2021-12-06 20:09:40,255 INFO L932 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 [2021-12-06 20:09:40,256 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 304 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:40,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 851 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:09:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2021-12-06 20:09:40,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 2549. [2021-12-06 20:09:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 2548 states have (on average 1.5514128728414442) internal successors, (3953), 2548 states have internal predecessors, (3953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3953 transitions. [2021-12-06 20:09:40,354 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3953 transitions. Word has length 166 [2021-12-06 20:09:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:40,354 INFO L470 AbstractCegarLoop]: Abstraction has 2549 states and 3953 transitions. [2021-12-06 20:09:40,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3953 transitions. [2021-12-06 20:09:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-06 20:09:40,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:40,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:40,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:09:40,360 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:40,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1416498315, now seen corresponding path program 1 times [2021-12-06 20:09:40,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:40,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654840918] [2021-12-06 20:09:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:40,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:40,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:40,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654840918] [2021-12-06 20:09:40,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654840918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:40,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:40,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:09:40,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127412356] [2021-12-06 20:09:40,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:40,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:09:40,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:09:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:09:40,406 INFO L87 Difference]: Start difference. First operand 2549 states and 3953 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:40,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:40,560 INFO L93 Difference]: Finished difference Result 6807 states and 10560 transitions. [2021-12-06 20:09:40,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:09:40,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-12-06 20:09:40,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:40,579 INFO L225 Difference]: With dead ends: 6807 [2021-12-06 20:09:40,579 INFO L226 Difference]: Without dead ends: 4323 [2021-12-06 20:09:40,584 INFO L932 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 [2021-12-06 20:09:40,584 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 290 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:40,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 910 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:09:40,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2021-12-06 20:09:40,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 4321. [2021-12-06 20:09:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 1.5354166666666667) internal successors, (6633), 4320 states have internal predecessors, (6633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 6633 transitions. [2021-12-06 20:09:40,784 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 6633 transitions. Word has length 169 [2021-12-06 20:09:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:40,784 INFO L470 AbstractCegarLoop]: Abstraction has 4321 states and 6633 transitions. [2021-12-06 20:09:40,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 6633 transitions. [2021-12-06 20:09:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-06 20:09:40,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:40,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:40,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:09:40,794 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:40,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash 490931930, now seen corresponding path program 1 times [2021-12-06 20:09:40,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:40,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979884198] [2021-12-06 20:09:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:40,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:40,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:40,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979884198] [2021-12-06 20:09:40,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979884198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:40,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:40,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:09:40,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022929433] [2021-12-06 20:09:40,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:40,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:09:40,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:40,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:09:40,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:09:40,871 INFO L87 Difference]: Start difference. First operand 4321 states and 6633 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:42,271 INFO L93 Difference]: Finished difference Result 39590 states and 60564 transitions. [2021-12-06 20:09:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:09:42,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-12-06 20:09:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:42,373 INFO L225 Difference]: With dead ends: 39590 [2021-12-06 20:09:42,373 INFO L226 Difference]: Without dead ends: 35340 [2021-12-06 20:09:42,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:09:42,386 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 4732 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4732 SdHoareTripleChecker+Valid, 4387 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:42,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4732 Valid, 4387 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:09:42,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35340 states. [2021-12-06 20:09:43,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35340 to 8509. [2021-12-06 20:09:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8509 states, 8508 states have (on average 1.507052186177715) internal successors, (12822), 8508 states have internal predecessors, (12822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8509 states to 8509 states and 12822 transitions. [2021-12-06 20:09:43,063 INFO L78 Accepts]: Start accepts. Automaton has 8509 states and 12822 transitions. Word has length 172 [2021-12-06 20:09:43,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:43,064 INFO L470 AbstractCegarLoop]: Abstraction has 8509 states and 12822 transitions. [2021-12-06 20:09:43,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:43,064 INFO L276 IsEmpty]: Start isEmpty. Operand 8509 states and 12822 transitions. [2021-12-06 20:09:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-06 20:09:43,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:43,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:43,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:09:43,078 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:43,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:43,079 INFO L85 PathProgramCache]: Analyzing trace with hash -22480241, now seen corresponding path program 1 times [2021-12-06 20:09:43,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:43,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688101481] [2021-12-06 20:09:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:43,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:43,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:43,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688101481] [2021-12-06 20:09:43,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688101481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:43,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:43,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:09:43,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190040737] [2021-12-06 20:09:43,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:43,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:09:43,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:43,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:09:43,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:09:43,252 INFO L87 Difference]: Start difference. First operand 8509 states and 12822 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:43,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:43,878 INFO L93 Difference]: Finished difference Result 16949 states and 25561 transitions. [2021-12-06 20:09:43,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:09:43,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-12-06 20:09:43,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:43,892 INFO L225 Difference]: With dead ends: 16949 [2021-12-06 20:09:43,892 INFO L226 Difference]: Without dead ends: 8511 [2021-12-06 20:09:43,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:09:43,901 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1644 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:43,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 2005 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:09:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8511 states. [2021-12-06 20:09:44,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8511 to 8509. [2021-12-06 20:09:44,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8509 states, 8508 states have (on average 1.4918899858956276) internal successors, (12693), 8508 states have internal predecessors, (12693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8509 states to 8509 states and 12693 transitions. [2021-12-06 20:09:44,269 INFO L78 Accepts]: Start accepts. Automaton has 8509 states and 12693 transitions. Word has length 176 [2021-12-06 20:09:44,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:44,269 INFO L470 AbstractCegarLoop]: Abstraction has 8509 states and 12693 transitions. [2021-12-06 20:09:44,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 8509 states and 12693 transitions. [2021-12-06 20:09:44,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-06 20:09:44,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:44,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:44,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:09:44,285 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:44,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:44,285 INFO L85 PathProgramCache]: Analyzing trace with hash -168463474, now seen corresponding path program 1 times [2021-12-06 20:09:44,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:44,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599507140] [2021-12-06 20:09:44,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:44,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:44,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:44,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:44,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599507140] [2021-12-06 20:09:44,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599507140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:44,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:44,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:09:44,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368287897] [2021-12-06 20:09:44,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:44,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:09:44,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:44,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:09:44,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:09:44,341 INFO L87 Difference]: Start difference. First operand 8509 states and 12693 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:44,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:44,746 INFO L93 Difference]: Finished difference Result 20367 states and 30367 transitions. [2021-12-06 20:09:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:09:44,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2021-12-06 20:09:44,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:44,760 INFO L225 Difference]: With dead ends: 20367 [2021-12-06 20:09:44,760 INFO L226 Difference]: Without dead ends: 11927 [2021-12-06 20:09:44,769 INFO L932 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 [2021-12-06 20:09:44,770 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 347 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:44,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 1111 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:09:44,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11927 states. [2021-12-06 20:09:45,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11927 to 11925. [2021-12-06 20:09:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11925 states, 11924 states have (on average 1.472660181147266) internal successors, (17560), 11924 states have internal predecessors, (17560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11925 states to 11925 states and 17560 transitions. [2021-12-06 20:09:45,200 INFO L78 Accepts]: Start accepts. Automaton has 11925 states and 17560 transitions. Word has length 176 [2021-12-06 20:09:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:45,200 INFO L470 AbstractCegarLoop]: Abstraction has 11925 states and 17560 transitions. [2021-12-06 20:09:45,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 11925 states and 17560 transitions. [2021-12-06 20:09:45,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 20:09:45,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:45,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:45,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:09:45,217 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:45,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:45,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1860587593, now seen corresponding path program 1 times [2021-12-06 20:09:45,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:45,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219623153] [2021-12-06 20:09:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:45,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:45,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:45,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219623153] [2021-12-06 20:09:45,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219623153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:45,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:45,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:09:45,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894281786] [2021-12-06 20:09:45,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:45,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:09:45,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:45,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:09:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:09:45,261 INFO L87 Difference]: Start difference. First operand 11925 states and 17560 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:46,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:46,363 INFO L93 Difference]: Finished difference Result 34812 states and 51184 transitions. [2021-12-06 20:09:46,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:09:46,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-12-06 20:09:46,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:46,387 INFO L225 Difference]: With dead ends: 34812 [2021-12-06 20:09:46,387 INFO L226 Difference]: Without dead ends: 23619 [2021-12-06 20:09:46,397 INFO L932 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 [2021-12-06 20:09:46,397 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 369 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:46,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 543 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:09:46,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23619 states. [2021-12-06 20:09:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23619 to 23617. [2021-12-06 20:09:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23617 states, 23616 states have (on average 1.460958672086721) internal successors, (34502), 23616 states have internal predecessors, (34502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23617 states to 23617 states and 34502 transitions. [2021-12-06 20:09:47,240 INFO L78 Accepts]: Start accepts. Automaton has 23617 states and 34502 transitions. Word has length 177 [2021-12-06 20:09:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:47,240 INFO L470 AbstractCegarLoop]: Abstraction has 23617 states and 34502 transitions. [2021-12-06 20:09:47,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:47,240 INFO L276 IsEmpty]: Start isEmpty. Operand 23617 states and 34502 transitions. [2021-12-06 20:09:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 20:09:47,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:47,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:47,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:09:47,270 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1344686569, now seen corresponding path program 1 times [2021-12-06 20:09:47,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:47,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083158547] [2021-12-06 20:09:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:47,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:47,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:47,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083158547] [2021-12-06 20:09:47,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083158547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:47,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:47,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:09:47,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465765986] [2021-12-06 20:09:47,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:47,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:09:47,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:09:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:09:47,314 INFO L87 Difference]: Start difference. First operand 23617 states and 34502 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:49,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:49,251 INFO L93 Difference]: Finished difference Result 67278 states and 98169 transitions. [2021-12-06 20:09:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:09:49,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-12-06 20:09:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:49,305 INFO L225 Difference]: With dead ends: 67278 [2021-12-06 20:09:49,305 INFO L226 Difference]: Without dead ends: 46841 [2021-12-06 20:09:49,331 INFO L932 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 [2021-12-06 20:09:49,332 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 356 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:49,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 553 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:09:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46841 states. [2021-12-06 20:09:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46841 to 46839. [2021-12-06 20:09:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46839 states, 46838 states have (on average 1.4509586233400231) internal successors, (67960), 46838 states have internal predecessors, (67960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46839 states to 46839 states and 67960 transitions. [2021-12-06 20:09:51,137 INFO L78 Accepts]: Start accepts. Automaton has 46839 states and 67960 transitions. Word has length 177 [2021-12-06 20:09:51,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:09:51,138 INFO L470 AbstractCegarLoop]: Abstraction has 46839 states and 67960 transitions. [2021-12-06 20:09:51,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:51,138 INFO L276 IsEmpty]: Start isEmpty. Operand 46839 states and 67960 transitions. [2021-12-06 20:09:51,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 20:09:51,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:09:51,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:09:51,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 20:09:51,182 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:09:51,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:09:51,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1972963255, now seen corresponding path program 1 times [2021-12-06 20:09:51,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:09:51,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815458262] [2021-12-06 20:09:51,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:09:51,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:09:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:09:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:09:51,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:09:51,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815458262] [2021-12-06 20:09:51,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815458262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:09:51,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:09:51,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:09:51,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890873761] [2021-12-06 20:09:51,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:09:51,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:09:51,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:09:51,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:09:51,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:09:51,265 INFO L87 Difference]: Start difference. First operand 46839 states and 67960 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:09:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:09:58,733 INFO L93 Difference]: Finished difference Result 237031 states and 342530 transitions. [2021-12-06 20:09:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:09:58,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-12-06 20:09:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:09:59,050 INFO L225 Difference]: With dead ends: 237031 [2021-12-06 20:09:59,050 INFO L226 Difference]: Without dead ends: 206597 [2021-12-06 20:09:59,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:09:59,096 INFO L933 BasicCegarLoop]: 1059 mSDtfsCounter, 2978 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2978 SdHoareTripleChecker+Valid, 3572 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:09:59,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2978 Valid, 3572 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:09:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206597 states. [2021-12-06 20:10:04,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206597 to 87161. [2021-12-06 20:10:04,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87161 states, 87160 states have (on average 1.4395364846259753) internal successors, (125470), 87160 states have internal predecessors, (125470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:10:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87161 states to 87161 states and 125470 transitions. [2021-12-06 20:10:04,218 INFO L78 Accepts]: Start accepts. Automaton has 87161 states and 125470 transitions. Word has length 177 [2021-12-06 20:10:04,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:10:04,219 INFO L470 AbstractCegarLoop]: Abstraction has 87161 states and 125470 transitions. [2021-12-06 20:10:04,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:10:04,219 INFO L276 IsEmpty]: Start isEmpty. Operand 87161 states and 125470 transitions. [2021-12-06 20:10:04,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 20:10:04,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:10:04,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:10:04,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:10:04,312 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:10:04,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:10:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1095703211, now seen corresponding path program 1 times [2021-12-06 20:10:04,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:10:04,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321732446] [2021-12-06 20:10:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:10:04,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:10:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:10:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:10:04,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:10:04,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321732446] [2021-12-06 20:10:04,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321732446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:10:04,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:10:04,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:10:04,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471786948] [2021-12-06 20:10:04,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:10:04,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:10:04,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:10:04,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:10:04,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:10:04,392 INFO L87 Difference]: Start difference. First operand 87161 states and 125470 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:10:14,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:10:14,373 INFO L93 Difference]: Finished difference Result 272135 states and 392450 transitions. [2021-12-06 20:10:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:10:14,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-12-06 20:10:14,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:10:14,747 INFO L225 Difference]: With dead ends: 272135 [2021-12-06 20:10:14,747 INFO L226 Difference]: Without dead ends: 241173 [2021-12-06 20:10:14,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:10:14,827 INFO L933 BasicCegarLoop]: 1177 mSDtfsCounter, 2553 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2553 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:10:14,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2553 Valid, 4038 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:10:15,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241173 states. [2021-12-06 20:10:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241173 to 143677. [2021-12-06 20:10:22,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143677 states, 143676 states have (on average 1.4313176870180127) internal successors, (205646), 143676 states have internal predecessors, (205646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:10:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143677 states to 143677 states and 205646 transitions. [2021-12-06 20:10:22,618 INFO L78 Accepts]: Start accepts. Automaton has 143677 states and 205646 transitions. Word has length 177 [2021-12-06 20:10:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:10:22,619 INFO L470 AbstractCegarLoop]: Abstraction has 143677 states and 205646 transitions. [2021-12-06 20:10:22,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:10:22,619 INFO L276 IsEmpty]: Start isEmpty. Operand 143677 states and 205646 transitions. [2021-12-06 20:10:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 20:10:22,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:10:22,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:10:22,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 20:10:22,781 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:10:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:10:22,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2115418623, now seen corresponding path program 1 times [2021-12-06 20:10:22,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:10:22,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305461658] [2021-12-06 20:10:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:10:22,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:10:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:10:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:10:22,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:10:22,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305461658] [2021-12-06 20:10:22,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305461658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:10:22,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:10:22,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:10:22,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379281910] [2021-12-06 20:10:22,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:10:22,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:10:22,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:10:22,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:10:22,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:10:22,864 INFO L87 Difference]: Start difference. First operand 143677 states and 205646 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:10:35,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:10:35,282 INFO L93 Difference]: Finished difference Result 309943 states and 446450 transitions. [2021-12-06 20:10:35,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:10:35,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-12-06 20:10:35,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:10:35,709 INFO L225 Difference]: With dead ends: 309943 [2021-12-06 20:10:35,709 INFO L226 Difference]: Without dead ends: 278381 [2021-12-06 20:10:35,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:10:35,777 INFO L933 BasicCegarLoop]: 1295 mSDtfsCounter, 2514 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 4143 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:10:35,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2514 Valid, 4143 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:10:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278381 states. [2021-12-06 20:10:46,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278381 to 182387. [2021-12-06 20:10:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182387 states, 182386 states have (on average 1.430833506957771) internal successors, (260964), 182386 states have internal predecessors, (260964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:10:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182387 states to 182387 states and 260964 transitions. [2021-12-06 20:10:46,468 INFO L78 Accepts]: Start accepts. Automaton has 182387 states and 260964 transitions. Word has length 177 [2021-12-06 20:10:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:10:46,469 INFO L470 AbstractCegarLoop]: Abstraction has 182387 states and 260964 transitions. [2021-12-06 20:10:46,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:10:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 182387 states and 260964 transitions. [2021-12-06 20:10:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 20:10:46,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:10:46,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:10:46,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 20:10:46,673 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:10:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:10:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash 717624139, now seen corresponding path program 1 times [2021-12-06 20:10:46,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:10:46,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367195242] [2021-12-06 20:10:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:10:46,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:10:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:10:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:10:46,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:10:46,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367195242] [2021-12-06 20:10:46,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367195242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:10:46,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:10:46,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:10:46,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591525855] [2021-12-06 20:10:46,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:10:46,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:10:46,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:10:46,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:10:46,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:10:46,753 INFO L87 Difference]: Start difference. First operand 182387 states and 260964 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:11:02,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:11:02,682 INFO L93 Difference]: Finished difference Result 349339 states and 502790 transitions. [2021-12-06 20:11:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:11:02,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-12-06 20:11:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:11:03,282 INFO L225 Difference]: With dead ends: 349339 [2021-12-06 20:11:03,282 INFO L226 Difference]: Without dead ends: 317201 [2021-12-06 20:11:03,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:11:03,370 INFO L933 BasicCegarLoop]: 1227 mSDtfsCounter, 3001 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3001 SdHoareTripleChecker+Valid, 3985 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:11:03,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3001 Valid, 3985 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:11:03,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317201 states. [2021-12-06 20:11:16,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317201 to 221661. [2021-12-06 20:11:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221661 states, 221660 states have (on average 1.4307227285031128) internal successors, (317134), 221660 states have internal predecessors, (317134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:11:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221661 states to 221661 states and 317134 transitions. [2021-12-06 20:11:17,346 INFO L78 Accepts]: Start accepts. Automaton has 221661 states and 317134 transitions. Word has length 177 [2021-12-06 20:11:17,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:11:17,346 INFO L470 AbstractCegarLoop]: Abstraction has 221661 states and 317134 transitions. [2021-12-06 20:11:17,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:11:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 221661 states and 317134 transitions. [2021-12-06 20:11:17,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 20:11:17,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:11:17,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:11:17,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 20:11:17,631 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:11:17,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:11:17,632 INFO L85 PathProgramCache]: Analyzing trace with hash 48955061, now seen corresponding path program 1 times [2021-12-06 20:11:17,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:11:17,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97407326] [2021-12-06 20:11:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:11:17,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:11:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:11:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:11:17,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:11:17,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97407326] [2021-12-06 20:11:17,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97407326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:11:17,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:11:17,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:11:17,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132151384] [2021-12-06 20:11:17,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:11:17,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:11:17,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:11:17,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:11:17,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:11:17,713 INFO L87 Difference]: Start difference. First operand 221661 states and 317134 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:11:37,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:11:37,222 INFO L93 Difference]: Finished difference Result 366973 states and 528592 transitions. [2021-12-06 20:11:37,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:11:37,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-12-06 20:11:37,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:11:37,852 INFO L225 Difference]: With dead ends: 366973 [2021-12-06 20:11:37,852 INFO L226 Difference]: Without dead ends: 344747 [2021-12-06 20:11:37,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:11:37,920 INFO L933 BasicCegarLoop]: 1030 mSDtfsCounter, 2964 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2964 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:11:37,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2964 Valid, 3059 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:11:38,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344747 states. [2021-12-06 20:11:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344747 to 249207. [2021-12-06 20:11:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249207 states, 249206 states have (on average 1.4330313074324053) internal successors, (357120), 249206 states have internal predecessors, (357120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:11:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249207 states to 249207 states and 357120 transitions. [2021-12-06 20:11:54,405 INFO L78 Accepts]: Start accepts. Automaton has 249207 states and 357120 transitions. Word has length 177 [2021-12-06 20:11:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:11:54,406 INFO L470 AbstractCegarLoop]: Abstraction has 249207 states and 357120 transitions. [2021-12-06 20:11:54,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:11:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 249207 states and 357120 transitions. [2021-12-06 20:11:54,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:11:54,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:11:54,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:11:54,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 20:11:54,712 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:11:54,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:11:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash 837503155, now seen corresponding path program 1 times [2021-12-06 20:11:54,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:11:54,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483628237] [2021-12-06 20:11:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:11:54,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:11:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:11:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:11:54,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:11:54,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483628237] [2021-12-06 20:11:54,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483628237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:11:54,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:11:54,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:11:54,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878368381] [2021-12-06 20:11:54,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:11:54,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:11:54,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:11:54,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:11:54,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:11:54,767 INFO L87 Difference]: Start difference. First operand 249207 states and 357120 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:12:23,811 INFO L93 Difference]: Finished difference Result 727107 states and 1040906 transitions. [2021-12-06 20:12:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:12:23,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:12:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:12:24,636 INFO L225 Difference]: With dead ends: 727107 [2021-12-06 20:12:24,636 INFO L226 Difference]: Without dead ends: 495043 [2021-12-06 20:12:24,967 INFO L932 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 [2021-12-06 20:12:24,967 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 270 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:12:24,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 553 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 20:12:25,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495043 states. [2021-12-06 20:12:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495043 to 495041. [2021-12-06 20:12:56,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495041 states, 495040 states have (on average 1.4225961538461538) internal successors, (704242), 495040 states have internal predecessors, (704242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495041 states to 495041 states and 704242 transitions. [2021-12-06 20:12:57,968 INFO L78 Accepts]: Start accepts. Automaton has 495041 states and 704242 transitions. Word has length 179 [2021-12-06 20:12:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:12:57,969 INFO L470 AbstractCegarLoop]: Abstraction has 495041 states and 704242 transitions. [2021-12-06 20:12:57,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:12:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 495041 states and 704242 transitions. [2021-12-06 20:12:58,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:12:58,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:12:58,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:12:58,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 20:12:58,720 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:12:58,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:12:58,720 INFO L85 PathProgramCache]: Analyzing trace with hash -224197128, now seen corresponding path program 1 times [2021-12-06 20:12:58,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:12:58,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691394632] [2021-12-06 20:12:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:12:58,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:12:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:12:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:12:58,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:12:58,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691394632] [2021-12-06 20:12:58,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691394632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:12:58,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:12:58,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:12:58,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14280186] [2021-12-06 20:12:58,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:12:58,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:12:58,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:12:58,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:12:58,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:12:58,804 INFO L87 Difference]: Start difference. First operand 495041 states and 704242 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:16,651 INFO L93 Difference]: Finished difference Result 655379 states and 936379 transitions. [2021-12-06 20:13:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:13:16,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:13:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:17,022 INFO L225 Difference]: With dead ends: 655379 [2021-12-06 20:13:17,022 INFO L226 Difference]: Without dead ends: 249567 [2021-12-06 20:13:17,232 INFO L932 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 [2021-12-06 20:13:17,232 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 1299 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:17,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1299 Valid, 249 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:13:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249567 states. [2021-12-06 20:13:35,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249567 to 249567. [2021-12-06 20:13:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249567 states, 249566 states have (on average 1.419131612479264) internal successors, (354167), 249566 states have internal predecessors, (354167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249567 states to 249567 states and 354167 transitions. [2021-12-06 20:13:35,735 INFO L78 Accepts]: Start accepts. Automaton has 249567 states and 354167 transitions. Word has length 179 [2021-12-06 20:13:35,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:13:35,736 INFO L470 AbstractCegarLoop]: Abstraction has 249567 states and 354167 transitions. [2021-12-06 20:13:35,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:35,736 INFO L276 IsEmpty]: Start isEmpty. Operand 249567 states and 354167 transitions. [2021-12-06 20:13:36,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:13:36,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:13:36,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:13:36,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 20:13:36,034 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:13:36,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:13:36,034 INFO L85 PathProgramCache]: Analyzing trace with hash 260397437, now seen corresponding path program 1 times [2021-12-06 20:13:36,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:13:36,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546018673] [2021-12-06 20:13:36,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:13:36,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:13:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:13:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:13:36,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:13:36,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546018673] [2021-12-06 20:13:36,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546018673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:13:36,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:13:36,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:13:36,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533964717] [2021-12-06 20:13:36,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:13:36,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:13:36,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:13:36,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:13:36,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:13:36,100 INFO L87 Difference]: Start difference. First operand 249567 states and 354167 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:13:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:13:53,778 INFO L93 Difference]: Finished difference Result 499047 states and 708230 transitions. [2021-12-06 20:13:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:13:53,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:13:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:13:54,135 INFO L225 Difference]: With dead ends: 499047 [2021-12-06 20:13:54,135 INFO L226 Difference]: Without dead ends: 249567 [2021-12-06 20:13:54,284 INFO L932 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 [2021-12-06 20:13:54,285 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 1232 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:13:54,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1232 Valid, 281 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:13:54,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249567 states. [2021-12-06 20:14:12,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249567 to 249567. [2021-12-06 20:14:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249567 states, 249566 states have (on average 1.4046745149579671) internal successors, (350559), 249566 states have internal predecessors, (350559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249567 states to 249567 states and 350559 transitions. [2021-12-06 20:14:13,386 INFO L78 Accepts]: Start accepts. Automaton has 249567 states and 350559 transitions. Word has length 179 [2021-12-06 20:14:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:13,386 INFO L470 AbstractCegarLoop]: Abstraction has 249567 states and 350559 transitions. [2021-12-06 20:14:13,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:13,387 INFO L276 IsEmpty]: Start isEmpty. Operand 249567 states and 350559 transitions. [2021-12-06 20:14:13,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:14:13,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:13,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:13,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 20:14:13,700 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:14:13,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:13,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1089345602, now seen corresponding path program 1 times [2021-12-06 20:14:13,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:13,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651187459] [2021-12-06 20:14:13,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:13,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:13,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:14:13,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651187459] [2021-12-06 20:14:13,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651187459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:14:13,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:14:13,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:14:13,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489436072] [2021-12-06 20:14:13,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:14:13,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:14:13,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:14:13,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:14:13,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:14:13,759 INFO L87 Difference]: Start difference. First operand 249567 states and 350559 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:32,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:14:32,534 INFO L93 Difference]: Finished difference Result 499089 states and 701070 transitions. [2021-12-06 20:14:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:14:32,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:14:32,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:14:32,889 INFO L225 Difference]: With dead ends: 499089 [2021-12-06 20:14:32,889 INFO L226 Difference]: Without dead ends: 249567 [2021-12-06 20:14:33,054 INFO L932 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 [2021-12-06 20:14:33,055 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 1256 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:14:33,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 257 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:14:33,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249567 states. [2021-12-06 20:14:51,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249567 to 249567. [2021-12-06 20:14:52,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249567 states, 249566 states have (on average 1.3917200259650753) internal successors, (347326), 249566 states have internal predecessors, (347326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249567 states to 249567 states and 347326 transitions. [2021-12-06 20:14:52,571 INFO L78 Accepts]: Start accepts. Automaton has 249567 states and 347326 transitions. Word has length 179 [2021-12-06 20:14:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:14:52,571 INFO L470 AbstractCegarLoop]: Abstraction has 249567 states and 347326 transitions. [2021-12-06 20:14:52,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:14:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 249567 states and 347326 transitions. [2021-12-06 20:14:52,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:14:52,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:14:52,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:14:52,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 20:14:52,877 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:14:52,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:14:52,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2087918179, now seen corresponding path program 1 times [2021-12-06 20:14:52,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:14:52,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678452025] [2021-12-06 20:14:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:14:52,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:14:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:14:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:14:52,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:14:52,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678452025] [2021-12-06 20:14:52,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678452025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:14:52,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:14:52,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:14:52,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803441758] [2021-12-06 20:14:52,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:14:52,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:14:52,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:14:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:14:52,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:14:52,929 INFO L87 Difference]: Start difference. First operand 249567 states and 347326 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:03,141 INFO L93 Difference]: Finished difference Result 356616 states and 497010 transitions. [2021-12-06 20:15:03,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:15:03,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:15:03,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:03,309 INFO L225 Difference]: With dead ends: 356616 [2021-12-06 20:15:03,309 INFO L226 Difference]: Without dead ends: 125637 [2021-12-06 20:15:03,408 INFO L932 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 [2021-12-06 20:15:03,408 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 1228 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:03,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1228 Valid, 265 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:15:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125637 states. [2021-12-06 20:15:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125637 to 125637. [2021-12-06 20:15:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125637 states, 125636 states have (on average 1.3890684198796523) internal successors, (174517), 125636 states have internal predecessors, (174517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125637 states to 125637 states and 174517 transitions. [2021-12-06 20:15:13,329 INFO L78 Accepts]: Start accepts. Automaton has 125637 states and 174517 transitions. Word has length 179 [2021-12-06 20:15:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:13,330 INFO L470 AbstractCegarLoop]: Abstraction has 125637 states and 174517 transitions. [2021-12-06 20:15:13,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 125637 states and 174517 transitions. [2021-12-06 20:15:13,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:15:13,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:13,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:13,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 20:15:13,469 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash -648492894, now seen corresponding path program 1 times [2021-12-06 20:15:13,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:13,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100816866] [2021-12-06 20:15:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:13,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:15:13,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:13,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100816866] [2021-12-06 20:15:13,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100816866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:15:13,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:15:13,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:15:13,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640984444] [2021-12-06 20:15:13,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:15:13,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:15:13,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:13,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:15:13,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:15:13,516 INFO L87 Difference]: Start difference. First operand 125637 states and 174517 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:18,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:18,430 INFO L93 Difference]: Finished difference Result 171641 states and 240359 transitions. [2021-12-06 20:15:18,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:15:18,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:15:18,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:18,507 INFO L225 Difference]: With dead ends: 171641 [2021-12-06 20:15:18,507 INFO L226 Difference]: Without dead ends: 63174 [2021-12-06 20:15:18,549 INFO L932 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 [2021-12-06 20:15:18,549 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 183 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:18,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 688 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:15:18,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63174 states. [2021-12-06 20:15:23,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63174 to 63172. [2021-12-06 20:15:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63172 states, 63171 states have (on average 1.405866616010511) internal successors, (88810), 63171 states have internal predecessors, (88810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63172 states to 63172 states and 88810 transitions. [2021-12-06 20:15:23,652 INFO L78 Accepts]: Start accepts. Automaton has 63172 states and 88810 transitions. Word has length 179 [2021-12-06 20:15:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:23,652 INFO L470 AbstractCegarLoop]: Abstraction has 63172 states and 88810 transitions. [2021-12-06 20:15:23,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:23,652 INFO L276 IsEmpty]: Start isEmpty. Operand 63172 states and 88810 transitions. [2021-12-06 20:15:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:15:23,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:23,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:23,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 20:15:23,694 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash 862735960, now seen corresponding path program 1 times [2021-12-06 20:15:23,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:23,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174391141] [2021-12-06 20:15:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:23,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:15:23,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:23,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174391141] [2021-12-06 20:15:23,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174391141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:15:23,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:15:23,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:15:23,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658693226] [2021-12-06 20:15:23,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:15:23,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:15:23,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:23,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:15:23,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:15:23,740 INFO L87 Difference]: Start difference. First operand 63172 states and 88810 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:26,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:26,274 INFO L93 Difference]: Finished difference Result 90620 states and 127734 transitions. [2021-12-06 20:15:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:15:26,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:15:26,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:26,310 INFO L225 Difference]: With dead ends: 90620 [2021-12-06 20:15:26,310 INFO L226 Difference]: Without dead ends: 32252 [2021-12-06 20:15:26,341 INFO L932 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 [2021-12-06 20:15:26,342 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 172 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:26,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 645 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:15:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32252 states. [2021-12-06 20:15:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32252 to 32250. [2021-12-06 20:15:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32250 states, 32249 states have (on average 1.395392105181556) internal successors, (45000), 32249 states have internal predecessors, (45000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32250 states to 32250 states and 45000 transitions. [2021-12-06 20:15:28,835 INFO L78 Accepts]: Start accepts. Automaton has 32250 states and 45000 transitions. Word has length 179 [2021-12-06 20:15:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:28,835 INFO L470 AbstractCegarLoop]: Abstraction has 32250 states and 45000 transitions. [2021-12-06 20:15:28,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 32250 states and 45000 transitions. [2021-12-06 20:15:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:15:28,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:28,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:28,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 20:15:28,856 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:28,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2032110728, now seen corresponding path program 1 times [2021-12-06 20:15:28,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:28,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51421700] [2021-12-06 20:15:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:28,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:15:28,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:28,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51421700] [2021-12-06 20:15:28,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51421700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:15:28,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:15:28,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:15:28,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398121174] [2021-12-06 20:15:28,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:15:28,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:15:28,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:28,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:15:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:15:28,899 INFO L87 Difference]: Start difference. First operand 32250 states and 45000 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:30,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:30,224 INFO L93 Difference]: Finished difference Result 45208 states and 63334 transitions. [2021-12-06 20:15:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:15:30,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:15:30,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:30,240 INFO L225 Difference]: With dead ends: 45208 [2021-12-06 20:15:30,240 INFO L226 Difference]: Without dead ends: 16557 [2021-12-06 20:15:30,257 INFO L932 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 [2021-12-06 20:15:30,257 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 169 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:30,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 607 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:15:30,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16557 states. [2021-12-06 20:15:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16557 to 16555. [2021-12-06 20:15:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16555 states, 16554 states have (on average 1.3829285973178689) internal successors, (22893), 16554 states have internal predecessors, (22893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16555 states to 16555 states and 22893 transitions. [2021-12-06 20:15:31,545 INFO L78 Accepts]: Start accepts. Automaton has 16555 states and 22893 transitions. Word has length 179 [2021-12-06 20:15:31,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:31,545 INFO L470 AbstractCegarLoop]: Abstraction has 16555 states and 22893 transitions. [2021-12-06 20:15:31,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:31,545 INFO L276 IsEmpty]: Start isEmpty. Operand 16555 states and 22893 transitions. [2021-12-06 20:15:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:15:31,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:31,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:31,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 20:15:31,555 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:31,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:31,555 INFO L85 PathProgramCache]: Analyzing trace with hash 279082104, now seen corresponding path program 1 times [2021-12-06 20:15:31,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:31,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801647836] [2021-12-06 20:15:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:31,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:15:31,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:31,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801647836] [2021-12-06 20:15:31,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801647836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:15:31,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:15:31,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:15:31,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065154519] [2021-12-06 20:15:31,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:15:31,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:15:31,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:31,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:15:31,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:15:31,596 INFO L87 Difference]: Start difference. First operand 16555 states and 22893 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:32,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:32,268 INFO L93 Difference]: Finished difference Result 22825 states and 31727 transitions. [2021-12-06 20:15:32,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:15:32,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:15:32,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:32,276 INFO L225 Difference]: With dead ends: 22825 [2021-12-06 20:15:32,276 INFO L226 Difference]: Without dead ends: 8614 [2021-12-06 20:15:32,284 INFO L932 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 [2021-12-06 20:15:32,285 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 165 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:32,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 564 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:15:32,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8614 states. [2021-12-06 20:15:32,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8614 to 8612. [2021-12-06 20:15:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8612 states, 8611 states have (on average 1.3703402624549994) internal successors, (11800), 8611 states have internal predecessors, (11800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:32,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8612 states to 8612 states and 11800 transitions. [2021-12-06 20:15:32,941 INFO L78 Accepts]: Start accepts. Automaton has 8612 states and 11800 transitions. Word has length 179 [2021-12-06 20:15:32,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:32,941 INFO L470 AbstractCegarLoop]: Abstraction has 8612 states and 11800 transitions. [2021-12-06 20:15:32,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:32,941 INFO L276 IsEmpty]: Start isEmpty. Operand 8612 states and 11800 transitions. [2021-12-06 20:15:32,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:15:32,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:32,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:32,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 20:15:32,946 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:32,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2029066069, now seen corresponding path program 1 times [2021-12-06 20:15:32,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:32,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103730799] [2021-12-06 20:15:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:32,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:15:33,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:33,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103730799] [2021-12-06 20:15:33,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103730799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:15:33,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:15:33,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 20:15:33,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927972850] [2021-12-06 20:15:33,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:15:33,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:15:33,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:33,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:15:33,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:15:33,136 INFO L87 Difference]: Start difference. First operand 8612 states and 11800 transitions. Second operand has 14 states, 14 states have (on average 12.785714285714286) internal successors, (179), 13 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:39,729 INFO L93 Difference]: Finished difference Result 69562 states and 94786 transitions. [2021-12-06 20:15:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 20:15:39,730 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.785714285714286) internal successors, (179), 13 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:15:39,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:39,806 INFO L225 Difference]: With dead ends: 69562 [2021-12-06 20:15:39,806 INFO L226 Difference]: Without dead ends: 62423 [2021-12-06 20:15:39,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=404, Invalid=1318, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 20:15:39,830 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 6266 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6266 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:39,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6266 Valid, 1617 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 20:15:39,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62423 states. [2021-12-06 20:15:41,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62423 to 8757. [2021-12-06 20:15:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8757 states, 8756 states have (on average 1.3680904522613064) internal successors, (11979), 8756 states have internal predecessors, (11979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:41,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8757 states to 8757 states and 11979 transitions. [2021-12-06 20:15:41,343 INFO L78 Accepts]: Start accepts. Automaton has 8757 states and 11979 transitions. Word has length 179 [2021-12-06 20:15:41,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:41,343 INFO L470 AbstractCegarLoop]: Abstraction has 8757 states and 11979 transitions. [2021-12-06 20:15:41,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.785714285714286) internal successors, (179), 13 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:41,343 INFO L276 IsEmpty]: Start isEmpty. Operand 8757 states and 11979 transitions. [2021-12-06 20:15:41,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:15:41,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:41,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:41,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 20:15:41,348 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:41,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash -608025445, now seen corresponding path program 1 times [2021-12-06 20:15:41,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:41,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777066488] [2021-12-06 20:15:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:41,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:15:41,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:41,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777066488] [2021-12-06 20:15:41,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777066488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:15:41,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:15:41,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 20:15:41,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115162246] [2021-12-06 20:15:41,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:15:41,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:15:41,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:41,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:15:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:15:41,540 INFO L87 Difference]: Start difference. First operand 8757 states and 11979 transitions. Second operand has 14 states, 14 states have (on average 12.785714285714286) internal successors, (179), 13 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:48,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:48,568 INFO L93 Difference]: Finished difference Result 53079 states and 72564 transitions. [2021-12-06 20:15:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 20:15:48,569 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.785714285714286) internal successors, (179), 13 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:15:48,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:48,612 INFO L225 Difference]: With dead ends: 53079 [2021-12-06 20:15:48,612 INFO L226 Difference]: Without dead ends: 44862 [2021-12-06 20:15:48,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=1149, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 20:15:48,626 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 5186 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:48,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5186 Valid, 2278 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 20:15:48,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44862 states. [2021-12-06 20:15:49,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44862 to 8497. [2021-12-06 20:15:49,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8497 states, 8496 states have (on average 1.3646421845574388) internal successors, (11594), 8496 states have internal predecessors, (11594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8497 states to 8497 states and 11594 transitions. [2021-12-06 20:15:49,959 INFO L78 Accepts]: Start accepts. Automaton has 8497 states and 11594 transitions. Word has length 179 [2021-12-06 20:15:49,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:49,959 INFO L470 AbstractCegarLoop]: Abstraction has 8497 states and 11594 transitions. [2021-12-06 20:15:49,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.785714285714286) internal successors, (179), 13 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:49,960 INFO L276 IsEmpty]: Start isEmpty. Operand 8497 states and 11594 transitions. [2021-12-06 20:15:49,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:15:49,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:49,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:49,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 20:15:49,964 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:49,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1439488167, now seen corresponding path program 1 times [2021-12-06 20:15:49,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:49,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046357368] [2021-12-06 20:15:49,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:49,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:15:50,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:50,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046357368] [2021-12-06 20:15:50,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046357368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:15:50,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:15:50,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:15:50,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605317749] [2021-12-06 20:15:50,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:15:50,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:15:50,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:50,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:15:50,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:15:50,059 INFO L87 Difference]: Start difference. First operand 8497 states and 11594 transitions. Second operand has 10 states, 10 states have (on average 17.9) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:57,014 INFO L93 Difference]: Finished difference Result 49624 states and 67749 transitions. [2021-12-06 20:15:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 20:15:57,015 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:15:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:57,063 INFO L225 Difference]: With dead ends: 49624 [2021-12-06 20:15:57,063 INFO L226 Difference]: Without dead ends: 43414 [2021-12-06 20:15:57,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2021-12-06 20:15:57,078 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 4381 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4381 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:57,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4381 Valid, 1190 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 20:15:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43414 states. [2021-12-06 20:15:58,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43414 to 8531. [2021-12-06 20:15:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8531 states, 8530 states have (on average 1.3648300117233294) internal successors, (11642), 8530 states have internal predecessors, (11642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:58,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8531 states to 8531 states and 11642 transitions. [2021-12-06 20:15:58,553 INFO L78 Accepts]: Start accepts. Automaton has 8531 states and 11642 transitions. Word has length 179 [2021-12-06 20:15:58,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:58,553 INFO L470 AbstractCegarLoop]: Abstraction has 8531 states and 11642 transitions. [2021-12-06 20:15:58,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:15:58,553 INFO L276 IsEmpty]: Start isEmpty. Operand 8531 states and 11642 transitions. [2021-12-06 20:15:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:15:58,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:58,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:58,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 20:15:58,558 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:58,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash -737900285, now seen corresponding path program 1 times [2021-12-06 20:15:58,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:58,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629412726] [2021-12-06 20:15:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:58,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:15:58,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:58,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629412726] [2021-12-06 20:15:58,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629412726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:15:58,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:15:58,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 20:15:58,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133916499] [2021-12-06 20:15:58,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:15:58,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:15:58,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:58,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:15:58,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:15:58,741 INFO L87 Difference]: Start difference. First operand 8531 states and 11642 transitions. Second operand has 14 states, 14 states have (on average 12.785714285714286) internal successors, (179), 13 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:06,404 INFO L93 Difference]: Finished difference Result 45928 states and 63167 transitions. [2021-12-06 20:16:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 20:16:06,405 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.785714285714286) internal successors, (179), 13 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-12-06 20:16:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:06,445 INFO L225 Difference]: With dead ends: 45928 [2021-12-06 20:16:06,445 INFO L226 Difference]: Without dead ends: 40540 [2021-12-06 20:16:06,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2021-12-06 20:16:06,455 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 3872 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3872 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:06,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3872 Valid, 2815 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 20:16:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40540 states. [2021-12-06 20:16:08,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40540 to 11122. [2021-12-06 20:16:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11122 states, 11121 states have (on average 1.3485298084704613) internal successors, (14997), 11121 states have internal predecessors, (14997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11122 states to 11122 states and 14997 transitions. [2021-12-06 20:16:08,402 INFO L78 Accepts]: Start accepts. Automaton has 11122 states and 14997 transitions. Word has length 179 [2021-12-06 20:16:08,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:08,402 INFO L470 AbstractCegarLoop]: Abstraction has 11122 states and 14997 transitions. [2021-12-06 20:16:08,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.785714285714286) internal successors, (179), 13 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:08,402 INFO L276 IsEmpty]: Start isEmpty. Operand 11122 states and 14997 transitions. [2021-12-06 20:16:08,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-06 20:16:08,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:08,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:08,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 20:16:08,409 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:08,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:08,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1163787579, now seen corresponding path program 1 times [2021-12-06 20:16:08,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:08,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905383865] [2021-12-06 20:16:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:08,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:08,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:08,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905383865] [2021-12-06 20:16:08,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905383865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:08,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:08,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 20:16:08,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797609211] [2021-12-06 20:16:08,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:08,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:16:08,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:08,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:16:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:16:08,561 INFO L87 Difference]: Start difference. First operand 11122 states and 14997 transitions. Second operand has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:22,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:22,614 INFO L93 Difference]: Finished difference Result 79222 states and 106907 transitions. [2021-12-06 20:16:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 20:16:22,615 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2021-12-06 20:16:22,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:22,701 INFO L225 Difference]: With dead ends: 79222 [2021-12-06 20:16:22,701 INFO L226 Difference]: Without dead ends: 72335 [2021-12-06 20:16:22,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 20:16:22,722 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 7051 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7051 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 2484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:22,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7051 Valid, 2808 Invalid, 2484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 20:16:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72335 states. [2021-12-06 20:16:25,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72335 to 11312. [2021-12-06 20:16:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11312 states, 11311 states have (on average 1.3464768809123862) internal successors, (15230), 11311 states have internal predecessors, (15230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11312 states to 11312 states and 15230 transitions. [2021-12-06 20:16:25,222 INFO L78 Accepts]: Start accepts. Automaton has 11312 states and 15230 transitions. Word has length 180 [2021-12-06 20:16:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:25,223 INFO L470 AbstractCegarLoop]: Abstraction has 11312 states and 15230 transitions. [2021-12-06 20:16:25,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 11312 states and 15230 transitions. [2021-12-06 20:16:25,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-06 20:16:25,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:25,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:25,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 20:16:25,229 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:25,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1598148757, now seen corresponding path program 1 times [2021-12-06 20:16:25,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:25,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720031059] [2021-12-06 20:16:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:25,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:25,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:25,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720031059] [2021-12-06 20:16:25,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720031059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:25,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:25,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:16:25,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151478421] [2021-12-06 20:16:25,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:25,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:16:25,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:25,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:16:25,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:16:25,268 INFO L87 Difference]: Start difference. First operand 11312 states and 15230 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:26,361 INFO L93 Difference]: Finished difference Result 15293 states and 20677 transitions. [2021-12-06 20:16:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:16:26,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2021-12-06 20:16:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:26,367 INFO L225 Difference]: With dead ends: 15293 [2021-12-06 20:16:26,367 INFO L226 Difference]: Without dead ends: 6063 [2021-12-06 20:16:26,372 INFO L932 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 [2021-12-06 20:16:26,372 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 131 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:26,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 520 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2021-12-06 20:16:27,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 6061. [2021-12-06 20:16:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6061 states, 6060 states have (on average 1.3252475247524753) internal successors, (8031), 6060 states have internal predecessors, (8031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6061 states to 6061 states and 8031 transitions. [2021-12-06 20:16:27,465 INFO L78 Accepts]: Start accepts. Automaton has 6061 states and 8031 transitions. Word has length 180 [2021-12-06 20:16:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:27,465 INFO L470 AbstractCegarLoop]: Abstraction has 6061 states and 8031 transitions. [2021-12-06 20:16:27,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 6061 states and 8031 transitions. [2021-12-06 20:16:27,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-06 20:16:27,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:27,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:27,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 20:16:27,469 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:27,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:27,469 INFO L85 PathProgramCache]: Analyzing trace with hash -907744371, now seen corresponding path program 1 times [2021-12-06 20:16:27,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:27,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049344250] [2021-12-06 20:16:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:27,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:27,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:27,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049344250] [2021-12-06 20:16:27,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049344250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:27,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:27,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:16:27,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343942142] [2021-12-06 20:16:27,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:27,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:16:27,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:27,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:16:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:16:27,572 INFO L87 Difference]: Start difference. First operand 6061 states and 8031 transitions. Second operand has 10 states, 10 states have (on average 18.0) internal successors, (180), 9 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:32,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:32,405 INFO L93 Difference]: Finished difference Result 26877 states and 35950 transitions. [2021-12-06 20:16:32,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 20:16:32,406 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.0) internal successors, (180), 9 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2021-12-06 20:16:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:32,423 INFO L225 Difference]: With dead ends: 26877 [2021-12-06 20:16:32,423 INFO L226 Difference]: Without dead ends: 22154 [2021-12-06 20:16:32,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-12-06 20:16:32,429 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 2913 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:32,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2913 Valid, 1226 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 20:16:32,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22154 states. [2021-12-06 20:16:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22154 to 6159. [2021-12-06 20:16:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6159 states, 6158 states have (on average 1.3264046768431308) internal successors, (8168), 6158 states have internal predecessors, (8168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6159 states to 6159 states and 8168 transitions. [2021-12-06 20:16:33,679 INFO L78 Accepts]: Start accepts. Automaton has 6159 states and 8168 transitions. Word has length 180 [2021-12-06 20:16:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:33,679 INFO L470 AbstractCegarLoop]: Abstraction has 6159 states and 8168 transitions. [2021-12-06 20:16:33,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.0) internal successors, (180), 9 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6159 states and 8168 transitions. [2021-12-06 20:16:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-06 20:16:33,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:33,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:33,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 20:16:33,683 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1334058353, now seen corresponding path program 1 times [2021-12-06 20:16:33,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:33,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18559237] [2021-12-06 20:16:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:33,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:33,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:33,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18559237] [2021-12-06 20:16:33,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18559237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:33,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:33,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 20:16:33,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340050836] [2021-12-06 20:16:33,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:33,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 20:16:33,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 20:16:33,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:16:33,970 INFO L87 Difference]: Start difference. First operand 6159 states and 8168 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 15 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:44,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:44,061 INFO L93 Difference]: Finished difference Result 33152 states and 44674 transitions. [2021-12-06 20:16:44,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-06 20:16:44,062 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 15 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2021-12-06 20:16:44,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:44,094 INFO L225 Difference]: With dead ends: 33152 [2021-12-06 20:16:44,095 INFO L226 Difference]: Without dead ends: 30425 [2021-12-06 20:16:44,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1270 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=983, Invalid=3307, Unknown=0, NotChecked=0, Total=4290 [2021-12-06 20:16:44,105 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 4118 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4118 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:44,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4118 Valid, 2681 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 20:16:44,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30425 states. [2021-12-06 20:16:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30425 to 7891. [2021-12-06 20:16:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7891 states, 7890 states have (on average 1.3077313054499367) internal successors, (10318), 7890 states have internal predecessors, (10318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7891 states to 7891 states and 10318 transitions. [2021-12-06 20:16:45,984 INFO L78 Accepts]: Start accepts. Automaton has 7891 states and 10318 transitions. Word has length 181 [2021-12-06 20:16:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:45,984 INFO L470 AbstractCegarLoop]: Abstraction has 7891 states and 10318 transitions. [2021-12-06 20:16:45,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 15 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 7891 states and 10318 transitions. [2021-12-06 20:16:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-06 20:16:45,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:45,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:45,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 20:16:45,989 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:45,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:45,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1900086250, now seen corresponding path program 1 times [2021-12-06 20:16:45,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:45,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861289906] [2021-12-06 20:16:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:45,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:46,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:46,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861289906] [2021-12-06 20:16:46,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861289906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:46,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:46,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:46,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298408063] [2021-12-06 20:16:46,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:46,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:46,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:46,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:46,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:46,035 INFO L87 Difference]: Start difference. First operand 7891 states and 10318 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:48,877 INFO L93 Difference]: Finished difference Result 14517 states and 19172 transitions. [2021-12-06 20:16:48,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:48,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2021-12-06 20:16:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:48,886 INFO L225 Difference]: With dead ends: 14517 [2021-12-06 20:16:48,887 INFO L226 Difference]: Without dead ends: 11360 [2021-12-06 20:16:48,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:48,891 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 768 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:48,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 540 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:16:48,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11360 states. [2021-12-06 20:16:50,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11360 to 5872. [2021-12-06 20:16:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 5871 states have (on average 1.3178334184977005) internal successors, (7737), 5871 states have internal predecessors, (7737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 7737 transitions. [2021-12-06 20:16:50,324 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 7737 transitions. Word has length 181 [2021-12-06 20:16:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:50,324 INFO L470 AbstractCegarLoop]: Abstraction has 5872 states and 7737 transitions. [2021-12-06 20:16:50,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:50,325 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 7737 transitions. [2021-12-06 20:16:50,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-06 20:16:50,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:50,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:50,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 20:16:50,328 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:50,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 847663692, now seen corresponding path program 1 times [2021-12-06 20:16:50,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:50,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901210863] [2021-12-06 20:16:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:50,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:50,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:50,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901210863] [2021-12-06 20:16:50,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901210863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:50,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:50,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 20:16:50,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449827922] [2021-12-06 20:16:50,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:50,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:16:50,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:50,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:16:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:16:50,501 INFO L87 Difference]: Start difference. First operand 5872 states and 7737 transitions. Second operand has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 13 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:56,742 INFO L93 Difference]: Finished difference Result 23064 states and 31121 transitions. [2021-12-06 20:16:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 20:16:56,742 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 13 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2021-12-06 20:16:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:56,759 INFO L225 Difference]: With dead ends: 23064 [2021-12-06 20:16:56,759 INFO L226 Difference]: Without dead ends: 20371 [2021-12-06 20:16:56,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2021-12-06 20:16:56,765 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 3362 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3362 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:56,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3362 Valid, 3001 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 20:16:56,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20371 states. [2021-12-06 20:16:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20371 to 6104. [2021-12-06 20:16:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 1.314599377355399) internal successors, (8023), 6103 states have internal predecessors, (8023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 8023 transitions. [2021-12-06 20:16:58,369 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 8023 transitions. Word has length 181 [2021-12-06 20:16:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:58,369 INFO L470 AbstractCegarLoop]: Abstraction has 6104 states and 8023 transitions. [2021-12-06 20:16:58,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 13 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:58,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 8023 transitions. [2021-12-06 20:16:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-06 20:16:58,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:58,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:58,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 20:16:58,373 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:58,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:58,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1703736969, now seen corresponding path program 1 times [2021-12-06 20:16:58,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:58,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275455998] [2021-12-06 20:16:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:58,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:58,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:58,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275455998] [2021-12-06 20:16:58,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275455998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:58,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:58,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 20:16:58,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884262426] [2021-12-06 20:16:58,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:58,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:16:58,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:58,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:16:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:16:58,542 INFO L87 Difference]: Start difference. First operand 6104 states and 8023 transitions. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:05,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:05,488 INFO L93 Difference]: Finished difference Result 23086 states and 31117 transitions. [2021-12-06 20:17:05,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 20:17:05,488 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 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 181 [2021-12-06 20:17:05,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:05,506 INFO L225 Difference]: With dead ends: 23086 [2021-12-06 20:17:05,506 INFO L226 Difference]: Without dead ends: 20471 [2021-12-06 20:17:05,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2021-12-06 20:17:05,513 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 4667 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:05,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4667 Valid, 1426 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 20:17:05,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20471 states. [2021-12-06 20:17:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20471 to 5099. [2021-12-06 20:17:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 1.3277755982738328) internal successors, (6769), 5098 states have internal predecessors, (6769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:06,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 6769 transitions. [2021-12-06 20:17:06,922 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 6769 transitions. Word has length 181 [2021-12-06 20:17:06,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:06,922 INFO L470 AbstractCegarLoop]: Abstraction has 5099 states and 6769 transitions. [2021-12-06 20:17:06,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 6769 transitions. [2021-12-06 20:17:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-06 20:17:06,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:06,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:06,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 20:17:06,925 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:06,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:06,925 INFO L85 PathProgramCache]: Analyzing trace with hash -482247409, now seen corresponding path program 1 times [2021-12-06 20:17:06,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:06,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57206424] [2021-12-06 20:17:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:06,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:17:07,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:07,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57206424] [2021-12-06 20:17:07,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57206424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:07,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:17:07,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-06 20:17:07,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572591749] [2021-12-06 20:17:07,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:07,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 20:17:07,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:07,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 20:17:07,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:17:07,228 INFO L87 Difference]: Start difference. First operand 5099 states and 6769 transitions. Second operand has 19 states, 19 states have (on average 9.578947368421053) internal successors, (182), 18 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:25,580 INFO L93 Difference]: Finished difference Result 53346 states and 72053 transitions. [2021-12-06 20:17:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-06 20:17:25,581 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.578947368421053) internal successors, (182), 18 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2021-12-06 20:17:25,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:25,638 INFO L225 Difference]: With dead ends: 53346 [2021-12-06 20:17:25,638 INFO L226 Difference]: Without dead ends: 50901 [2021-12-06 20:17:25,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=916, Invalid=3640, Unknown=0, NotChecked=0, Total=4556 [2021-12-06 20:17:25,651 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 5133 mSDsluCounter, 5659 mSDsCounter, 0 mSdLazyCounter, 5399 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5133 SdHoareTripleChecker+Valid, 6259 SdHoareTripleChecker+Invalid, 5497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 5399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:25,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5133 Valid, 6259 Invalid, 5497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 5399 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 20:17:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50901 states. [2021-12-06 20:17:27,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50901 to 5227. [2021-12-06 20:17:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5226 states have (on average 1.3243398392652124) internal successors, (6921), 5226 states have internal predecessors, (6921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 6921 transitions. [2021-12-06 20:17:27,444 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 6921 transitions. Word has length 182 [2021-12-06 20:17:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:27,444 INFO L470 AbstractCegarLoop]: Abstraction has 5227 states and 6921 transitions. [2021-12-06 20:17:27,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.578947368421053) internal successors, (182), 18 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 6921 transitions. [2021-12-06 20:17:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-06 20:17:27,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:27,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:27,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 20:17:27,447 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:27,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:27,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1223626350, now seen corresponding path program 1 times [2021-12-06 20:17:27,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:27,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131118537] [2021-12-06 20:17:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:27,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:17:27,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:27,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131118537] [2021-12-06 20:17:27,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131118537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:27,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:17:27,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:17:27,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473093751] [2021-12-06 20:17:27,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:27,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:17:27,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:27,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:17:27,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:17:27,632 INFO L87 Difference]: Start difference. First operand 5227 states and 6921 transitions. Second operand has 13 states, 13 states have (on average 14.0) internal successors, (182), 12 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:35,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:35,922 INFO L93 Difference]: Finished difference Result 22606 states and 30550 transitions. [2021-12-06 20:17:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 20:17:35,922 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.0) internal successors, (182), 12 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2021-12-06 20:17:35,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:35,941 INFO L225 Difference]: With dead ends: 22606 [2021-12-06 20:17:35,941 INFO L226 Difference]: Without dead ends: 20077 [2021-12-06 20:17:35,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 20:17:35,948 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 2911 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2911 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:35,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2911 Valid, 2221 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1802 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 20:17:35,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20077 states. [2021-12-06 20:17:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20077 to 4747. [2021-12-06 20:17:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4747 states, 4746 states have (on average 1.3272229245680573) internal successors, (6299), 4746 states have internal predecessors, (6299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:37,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4747 states to 4747 states and 6299 transitions. [2021-12-06 20:17:37,626 INFO L78 Accepts]: Start accepts. Automaton has 4747 states and 6299 transitions. Word has length 182 [2021-12-06 20:17:37,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:37,627 INFO L470 AbstractCegarLoop]: Abstraction has 4747 states and 6299 transitions. [2021-12-06 20:17:37,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.0) internal successors, (182), 12 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:37,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4747 states and 6299 transitions. [2021-12-06 20:17:37,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-06 20:17:37,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:37,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:37,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 20:17:37,629 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:37,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:37,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1676013198, now seen corresponding path program 1 times [2021-12-06 20:17:37,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:37,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559677405] [2021-12-06 20:17:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:37,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:17:37,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:37,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559677405] [2021-12-06 20:17:37,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559677405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:37,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:17:37,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:17:37,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046459783] [2021-12-06 20:17:37,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:37,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:17:37,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:37,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:17:37,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:17:37,747 INFO L87 Difference]: Start difference. First operand 4747 states and 6299 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:47,531 INFO L93 Difference]: Finished difference Result 29039 states and 38710 transitions. [2021-12-06 20:17:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 20:17:47,531 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2021-12-06 20:17:47,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:47,553 INFO L225 Difference]: With dead ends: 29039 [2021-12-06 20:17:47,553 INFO L226 Difference]: Without dead ends: 24927 [2021-12-06 20:17:47,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2021-12-06 20:17:47,561 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 1783 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:47,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1783 Valid, 2820 Invalid, 2188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 20:17:47,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24927 states. [2021-12-06 20:17:49,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24927 to 4835. [2021-12-06 20:17:49,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4835 states, 4834 states have (on average 1.321266032271411) internal successors, (6387), 4834 states have internal predecessors, (6387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 6387 transitions. [2021-12-06 20:17:49,324 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 6387 transitions. Word has length 182 [2021-12-06 20:17:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:49,324 INFO L470 AbstractCegarLoop]: Abstraction has 4835 states and 6387 transitions. [2021-12-06 20:17:49,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:49,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 6387 transitions. [2021-12-06 20:17:49,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 20:17:49,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:49,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:49,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-06 20:17:49,327 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:49,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash 960488534, now seen corresponding path program 1 times [2021-12-06 20:17:49,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:49,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939939941] [2021-12-06 20:17:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:49,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:17:49,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:49,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939939941] [2021-12-06 20:17:49,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939939941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:49,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:17:49,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:17:49,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236298548] [2021-12-06 20:17:49,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:49,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:17:49,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:17:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:17:49,352 INFO L87 Difference]: Start difference. First operand 4835 states and 6387 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:50,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:50,991 INFO L93 Difference]: Finished difference Result 9000 states and 11976 transitions. [2021-12-06 20:17:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:17:50,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 183 [2021-12-06 20:17:50,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:50,995 INFO L225 Difference]: With dead ends: 9000 [2021-12-06 20:17:50,995 INFO L226 Difference]: Without dead ends: 4375 [2021-12-06 20:17:50,997 INFO L932 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 [2021-12-06 20:17:50,998 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 259 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:50,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 245 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:17:51,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2021-12-06 20:17:52,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 4375. [2021-12-06 20:17:52,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4375 states, 4374 states have (on average 1.3157293095564702) internal successors, (5755), 4374 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 5755 transitions. [2021-12-06 20:17:52,506 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 5755 transitions. Word has length 183 [2021-12-06 20:17:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:52,506 INFO L470 AbstractCegarLoop]: Abstraction has 4375 states and 5755 transitions. [2021-12-06 20:17:52,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:17:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 5755 transitions. [2021-12-06 20:17:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 20:17:52,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:52,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:52,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-06 20:17:52,509 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1935182285, now seen corresponding path program 1 times [2021-12-06 20:17:52,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:52,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928007403] [2021-12-06 20:17:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:52,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:17:52,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:52,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928007403] [2021-12-06 20:17:52,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928007403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:52,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:17:52,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-06 20:17:52,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268529411] [2021-12-06 20:17:52,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:52,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 20:17:52,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:52,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 20:17:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:17:52,794 INFO L87 Difference]: Start difference. First operand 4375 states and 5755 transitions. Second operand has 17 states, 17 states have (on average 10.764705882352942) internal successors, (183), 16 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:18:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:04,083 INFO L93 Difference]: Finished difference Result 22257 states and 29610 transitions. [2021-12-06 20:18:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-12-06 20:18:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.764705882352942) internal successors, (183), 16 states have internal predecessors, (183), 0 states have call successors, (0), 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 183 [2021-12-06 20:18:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:04,101 INFO L225 Difference]: With dead ends: 22257 [2021-12-06 20:18:04,102 INFO L226 Difference]: Without dead ends: 20065 [2021-12-06 20:18:04,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1112, Invalid=3718, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 20:18:04,109 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 4538 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4538 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:04,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4538 Valid, 2204 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 20:18:04,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20065 states. [2021-12-06 20:18:06,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20065 to 5583. [2021-12-06 20:18:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5583 states, 5582 states have (on average 1.3038337513436045) internal successors, (7278), 5582 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:18:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5583 states to 5583 states and 7278 transitions. [2021-12-06 20:18:06,273 INFO L78 Accepts]: Start accepts. Automaton has 5583 states and 7278 transitions. Word has length 183 [2021-12-06 20:18:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:18:06,273 INFO L470 AbstractCegarLoop]: Abstraction has 5583 states and 7278 transitions. [2021-12-06 20:18:06,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.764705882352942) internal successors, (183), 16 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:18:06,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5583 states and 7278 transitions. [2021-12-06 20:18:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 20:18:06,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:18:06,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:18:06,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-06 20:18:06,276 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:18:06,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:18:06,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1396019984, now seen corresponding path program 1 times [2021-12-06 20:18:06,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:18:06,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395915434] [2021-12-06 20:18:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:06,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:18:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:18:06,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:18:06,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395915434] [2021-12-06 20:18:06,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395915434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:18:06,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:18:06,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-06 20:18:06,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630001953] [2021-12-06 20:18:06,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:18:06,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 20:18:06,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:18:06,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 20:18:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-12-06 20:18:06,629 INFO L87 Difference]: Start difference. First operand 5583 states and 7278 transitions. Second operand has 22 states, 22 states have (on average 8.318181818181818) internal successors, (183), 21 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:18:41,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:41,176 INFO L93 Difference]: Finished difference Result 55319 states and 72786 transitions. [2021-12-06 20:18:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2021-12-06 20:18:41,177 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.318181818181818) internal successors, (183), 21 states have internal predecessors, (183), 0 states have call successors, (0), 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 183 [2021-12-06 20:18:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:41,236 INFO L225 Difference]: With dead ends: 55319 [2021-12-06 20:18:41,236 INFO L226 Difference]: Without dead ends: 53119 [2021-12-06 20:18:41,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12207 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=4925, Invalid=26227, Unknown=0, NotChecked=0, Total=31152 [2021-12-06 20:18:41,258 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 7411 mSDsluCounter, 6845 mSDsCounter, 0 mSdLazyCounter, 6376 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7411 SdHoareTripleChecker+Valid, 7246 SdHoareTripleChecker+Invalid, 6716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 6376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:41,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7411 Valid, 7246 Invalid, 6716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 6376 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-06 20:18:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53119 states. [2021-12-06 20:18:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53119 to 7366. [2021-12-06 20:18:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7366 states, 7365 states have (on average 1.291785471826205) internal successors, (9514), 7365 states have internal predecessors, (9514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:18:44,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7366 states to 7366 states and 9514 transitions. [2021-12-06 20:18:44,594 INFO L78 Accepts]: Start accepts. Automaton has 7366 states and 9514 transitions. Word has length 183 [2021-12-06 20:18:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:18:44,594 INFO L470 AbstractCegarLoop]: Abstraction has 7366 states and 9514 transitions. [2021-12-06 20:18:44,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.318181818181818) internal successors, (183), 21 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:18:44,594 INFO L276 IsEmpty]: Start isEmpty. Operand 7366 states and 9514 transitions. [2021-12-06 20:18:44,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 20:18:44,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:18:44,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:18:44,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-06 20:18:44,599 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:18:44,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:18:44,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1294925501, now seen corresponding path program 1 times [2021-12-06 20:18:44,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:18:44,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473165879] [2021-12-06 20:18:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:44,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:18:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:18:44,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:18:44,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473165879] [2021-12-06 20:18:44,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473165879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:18:44,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:18:44,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:18:44,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021833876] [2021-12-06 20:18:44,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:18:44,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:18:44,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:18:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:18:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:18:44,628 INFO L87 Difference]: Start difference. First operand 7366 states and 9514 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:18:47,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:47,090 INFO L93 Difference]: Finished difference Result 13102 states and 17055 transitions. [2021-12-06 20:18:47,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:18:47,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 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 183 [2021-12-06 20:18:47,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:47,095 INFO L225 Difference]: With dead ends: 13102 [2021-12-06 20:18:47,095 INFO L226 Difference]: Without dead ends: 5775 [2021-12-06 20:18:47,100 INFO L932 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 [2021-12-06 20:18:47,100 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 194 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:47,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 321 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:18:47,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5775 states. [2021-12-06 20:18:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5775 to 5775. [2021-12-06 20:18:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5775 states, 5774 states have (on average 1.3016972635954278) internal successors, (7516), 5774 states have internal predecessors, (7516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:18:49,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5775 states to 5775 states and 7516 transitions. [2021-12-06 20:18:49,498 INFO L78 Accepts]: Start accepts. Automaton has 5775 states and 7516 transitions. Word has length 183 [2021-12-06 20:18:49,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:18:49,499 INFO L470 AbstractCegarLoop]: Abstraction has 5775 states and 7516 transitions. [2021-12-06 20:18:49,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:18:49,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5775 states and 7516 transitions. [2021-12-06 20:18:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 20:18:49,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:18:49,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:18:49,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-06 20:18:49,504 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:18:49,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:18:49,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2015070611, now seen corresponding path program 1 times [2021-12-06 20:18:49,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:18:49,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888190507] [2021-12-06 20:18:49,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:49,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:18:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:18:49,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:18:49,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888190507] [2021-12-06 20:18:49,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888190507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:18:49,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:18:49,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:18:49,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981819481] [2021-12-06 20:18:49,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:18:49,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:18:49,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:18:49,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:18:49,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:18:49,605 INFO L87 Difference]: Start difference. First operand 5775 states and 7516 transitions. Second operand has 10 states, 10 states have (on average 18.3) internal successors, (183), 9 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:18:59,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:59,210 INFO L93 Difference]: Finished difference Result 22352 states and 29633 transitions. [2021-12-06 20:18:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 20:18:59,211 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.3) internal successors, (183), 9 states have internal predecessors, (183), 0 states have call successors, (0), 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 183 [2021-12-06 20:18:59,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:59,227 INFO L225 Difference]: With dead ends: 22352 [2021-12-06 20:18:59,227 INFO L226 Difference]: Without dead ends: 20152 [2021-12-06 20:18:59,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-12-06 20:18:59,233 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 1902 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1902 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:59,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1902 Valid, 1592 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:18:59,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20152 states. [2021-12-06 20:19:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20152 to 7068. [2021-12-06 20:19:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7067 states have (on average 1.2926277062402718) internal successors, (9135), 7067 states have internal predecessors, (9135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 9135 transitions. [2021-12-06 20:19:02,271 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 9135 transitions. Word has length 183 [2021-12-06 20:19:02,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:02,271 INFO L470 AbstractCegarLoop]: Abstraction has 7068 states and 9135 transitions. [2021-12-06 20:19:02,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.3) internal successors, (183), 9 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 9135 transitions. [2021-12-06 20:19:02,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 20:19:02,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:02,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:02,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-06 20:19:02,275 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:02,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:02,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1864843020, now seen corresponding path program 1 times [2021-12-06 20:19:02,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:02,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238469905] [2021-12-06 20:19:02,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:02,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:02,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:02,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238469905] [2021-12-06 20:19:02,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238469905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:02,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:02,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:19:02,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822717734] [2021-12-06 20:19:02,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:02,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:19:02,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:02,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:19:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:19:02,312 INFO L87 Difference]: Start difference. First operand 7068 states and 9135 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:06,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:06,875 INFO L93 Difference]: Finished difference Result 12134 states and 15784 transitions. [2021-12-06 20:19:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:19:06,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2021-12-06 20:19:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:06,883 INFO L225 Difference]: With dead ends: 12134 [2021-12-06 20:19:06,883 INFO L226 Difference]: Without dead ends: 10169 [2021-12-06 20:19:06,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:19:06,887 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 510 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:06,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 605 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:19:06,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10169 states. [2021-12-06 20:19:09,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10169 to 6833. [2021-12-06 20:19:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6833 states, 6832 states have (on average 1.2912763466042154) internal successors, (8822), 6832 states have internal predecessors, (8822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 8822 transitions. [2021-12-06 20:19:09,876 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 8822 transitions. Word has length 184 [2021-12-06 20:19:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:09,877 INFO L470 AbstractCegarLoop]: Abstraction has 6833 states and 8822 transitions. [2021-12-06 20:19:09,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 8822 transitions. [2021-12-06 20:19:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 20:19:09,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:09,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:09,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-06 20:19:09,880 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:09,881 INFO L85 PathProgramCache]: Analyzing trace with hash 22812487, now seen corresponding path program 1 times [2021-12-06 20:19:09,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:09,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060760160] [2021-12-06 20:19:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:09,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:09,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:09,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:09,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060760160] [2021-12-06 20:19:09,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060760160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:09,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:09,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:19:09,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935047317] [2021-12-06 20:19:09,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:09,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:19:09,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:09,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:19:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:19:09,973 INFO L87 Difference]: Start difference. First operand 6833 states and 8822 transitions. Second operand has 10 states, 10 states have (on average 18.4) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:14,431 INFO L93 Difference]: Finished difference Result 14372 states and 18772 transitions. [2021-12-06 20:19:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 20:19:14,432 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2021-12-06 20:19:14,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:14,439 INFO L225 Difference]: With dead ends: 14372 [2021-12-06 20:19:14,439 INFO L226 Difference]: Without dead ends: 8373 [2021-12-06 20:19:14,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-12-06 20:19:14,444 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 1335 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:14,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 997 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 20:19:14,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8373 states. [2021-12-06 20:19:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8373 to 4355. [2021-12-06 20:19:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 1.310289389067524) internal successors, (5705), 4354 states have internal predecessors, (5705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 5705 transitions. [2021-12-06 20:19:16,510 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 5705 transitions. Word has length 184 [2021-12-06 20:19:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:16,510 INFO L470 AbstractCegarLoop]: Abstraction has 4355 states and 5705 transitions. [2021-12-06 20:19:16,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 5705 transitions. [2021-12-06 20:19:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 20:19:16,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:16,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:16,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-06 20:19:16,513 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:16,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1987887766, now seen corresponding path program 1 times [2021-12-06 20:19:16,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:16,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701041656] [2021-12-06 20:19:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:16,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:16,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:16,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701041656] [2021-12-06 20:19:16,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701041656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:16,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:16,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 20:19:16,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067069275] [2021-12-06 20:19:16,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:16,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 20:19:16,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:16,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 20:19:16,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:19:16,739 INFO L87 Difference]: Start difference. First operand 4355 states and 5705 transitions. Second operand has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:42,194 INFO L93 Difference]: Finished difference Result 38309 states and 50937 transitions. [2021-12-06 20:19:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 20:19:42,195 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2021-12-06 20:19:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:42,230 INFO L225 Difference]: With dead ends: 38309 [2021-12-06 20:19:42,231 INFO L226 Difference]: Without dead ends: 36040 [2021-12-06 20:19:42,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=773, Invalid=2419, Unknown=0, NotChecked=0, Total=3192 [2021-12-06 20:19:42,239 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 4772 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4772 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:42,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4772 Valid, 3666 Invalid, 3490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 20:19:42,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36040 states. [2021-12-06 20:19:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36040 to 5817. [2021-12-06 20:19:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 5816 states have (on average 1.2931568088033012) internal successors, (7521), 5816 states have internal predecessors, (7521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:45,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 7521 transitions. [2021-12-06 20:19:45,403 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 7521 transitions. Word has length 184 [2021-12-06 20:19:45,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:45,403 INFO L470 AbstractCegarLoop]: Abstraction has 5817 states and 7521 transitions. [2021-12-06 20:19:45,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5) internal successors, (184), 15 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 7521 transitions. [2021-12-06 20:19:45,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 20:19:45,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:45,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:45,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-06 20:19:45,406 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:45,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:45,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1045589116, now seen corresponding path program 1 times [2021-12-06 20:19:45,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:45,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117526517] [2021-12-06 20:19:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:45,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:45,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:45,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117526517] [2021-12-06 20:19:45,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117526517] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:45,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:45,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 20:19:45,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609538919] [2021-12-06 20:19:45,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:45,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:19:45,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:45,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:19:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:19:45,566 INFO L87 Difference]: Start difference. First operand 5817 states and 7521 transitions. Second operand has 12 states, 12 states have (on average 15.333333333333334) internal successors, (184), 11 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:57,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:57,152 INFO L93 Difference]: Finished difference Result 19504 states and 25580 transitions. [2021-12-06 20:19:57,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 20:19:57,153 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.333333333333334) internal successors, (184), 11 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2021-12-06 20:19:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:57,166 INFO L225 Difference]: With dead ends: 19504 [2021-12-06 20:19:57,167 INFO L226 Difference]: Without dead ends: 17427 [2021-12-06 20:19:57,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 20:19:57,171 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1941 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 2008 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:57,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1941 Valid, 2008 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 20:19:57,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17427 states. [2021-12-06 20:20:01,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17427 to 8325. [2021-12-06 20:20:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8325 states, 8324 states have (on average 1.2802739067755886) internal successors, (10657), 8324 states have internal predecessors, (10657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:20:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8325 states to 8325 states and 10657 transitions. [2021-12-06 20:20:01,537 INFO L78 Accepts]: Start accepts. Automaton has 8325 states and 10657 transitions. Word has length 184 [2021-12-06 20:20:01,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:20:01,538 INFO L470 AbstractCegarLoop]: Abstraction has 8325 states and 10657 transitions. [2021-12-06 20:20:01,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.333333333333334) internal successors, (184), 11 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:20:01,538 INFO L276 IsEmpty]: Start isEmpty. Operand 8325 states and 10657 transitions. [2021-12-06 20:20:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 20:20:01,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:20:01,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:20:01,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-06 20:20:01,543 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:20:01,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:20:01,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1633086617, now seen corresponding path program 1 times [2021-12-06 20:20:01,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:20:01,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874031620] [2021-12-06 20:20:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:20:01,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:20:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:20:01,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:20:01,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874031620] [2021-12-06 20:20:01,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874031620] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:20:01,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:20:01,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:20:01,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671413209] [2021-12-06 20:20:01,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:20:01,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:20:01,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:20:01,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:20:01,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:20:01,646 INFO L87 Difference]: Start difference. First operand 8325 states and 10657 transitions. Second operand has 10 states, 10 states have (on average 18.4) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:20:13,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:20:13,153 INFO L93 Difference]: Finished difference Result 21148 states and 27699 transitions. [2021-12-06 20:20:13,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 20:20:13,154 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2021-12-06 20:20:13,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:20:13,169 INFO L225 Difference]: With dead ends: 21148 [2021-12-06 20:20:13,169 INFO L226 Difference]: Without dead ends: 19066 [2021-12-06 20:20:13,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-12-06 20:20:13,173 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 1206 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:20:13,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 1752 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:20:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19066 states. [2021-12-06 20:20:17,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19066 to 7451. [2021-12-06 20:20:17,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7451 states, 7450 states have (on average 1.2896644295302013) internal successors, (9608), 7450 states have internal predecessors, (9608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:20:17,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7451 states to 7451 states and 9608 transitions. [2021-12-06 20:20:17,047 INFO L78 Accepts]: Start accepts. Automaton has 7451 states and 9608 transitions. Word has length 184 [2021-12-06 20:20:17,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:20:17,047 INFO L470 AbstractCegarLoop]: Abstraction has 7451 states and 9608 transitions. [2021-12-06 20:20:17,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:20:17,047 INFO L276 IsEmpty]: Start isEmpty. Operand 7451 states and 9608 transitions. [2021-12-06 20:20:17,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-06 20:20:17,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:20:17,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:20:17,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-06 20:20:17,051 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:20:17,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:20:17,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1372440034, now seen corresponding path program 1 times [2021-12-06 20:20:17,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:20:17,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002226400] [2021-12-06 20:20:17,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:20:17,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:20:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:20:17,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:20:17,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002226400] [2021-12-06 20:20:17,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002226400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:20:17,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:20:17,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:20:17,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513541635] [2021-12-06 20:20:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:20:17,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:20:17,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:20:17,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:20:17,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:20:17,158 INFO L87 Difference]: Start difference. First operand 7451 states and 9608 transitions. Second operand has 10 states, 10 states have (on average 18.5) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:20:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:20:36,666 INFO L93 Difference]: Finished difference Result 38652 states and 50285 transitions. [2021-12-06 20:20:36,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 20:20:36,667 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.5) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2021-12-06 20:20:36,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:20:36,695 INFO L225 Difference]: With dead ends: 38652 [2021-12-06 20:20:36,695 INFO L226 Difference]: Without dead ends: 32895 [2021-12-06 20:20:36,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-12-06 20:20:36,704 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 1913 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:20:36,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1913 Valid, 1896 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 20:20:36,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32895 states. [2021-12-06 20:20:40,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32895 to 7685. [2021-12-06 20:20:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7685 states, 7684 states have (on average 1.284357105674128) internal successors, (9869), 7684 states have internal predecessors, (9869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:20:40,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 9869 transitions. [2021-12-06 20:20:40,882 INFO L78 Accepts]: Start accepts. Automaton has 7685 states and 9869 transitions. Word has length 185 [2021-12-06 20:20:40,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:20:40,882 INFO L470 AbstractCegarLoop]: Abstraction has 7685 states and 9869 transitions. [2021-12-06 20:20:40,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.5) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:20:40,883 INFO L276 IsEmpty]: Start isEmpty. Operand 7685 states and 9869 transitions. [2021-12-06 20:20:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-06 20:20:40,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:20:40,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:20:40,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-06 20:20:40,887 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:20:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:20:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1630579395, now seen corresponding path program 1 times [2021-12-06 20:20:40,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:20:40,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310258988] [2021-12-06 20:20:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:20:40,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:20:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:20:41,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:20:41,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310258988] [2021-12-06 20:20:41,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310258988] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:20:41,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:20:41,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 20:20:41,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514806916] [2021-12-06 20:20:41,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:20:41,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 20:20:41,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:20:41,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 20:20:41,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:20:41,066 INFO L87 Difference]: Start difference. First operand 7685 states and 9869 transitions. Second operand has 15 states, 15 states have (on average 12.333333333333334) internal successors, (185), 14 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:21:18,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:18,114 INFO L93 Difference]: Finished difference Result 56976 states and 75230 transitions. [2021-12-06 20:21:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-06 20:21:18,115 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.333333333333334) internal successors, (185), 14 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2021-12-06 20:21:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:18,175 INFO L225 Difference]: With dead ends: 56976 [2021-12-06 20:21:18,175 INFO L226 Difference]: Without dead ends: 54779 [2021-12-06 20:21:18,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=776, Invalid=3130, Unknown=0, NotChecked=0, Total=3906 [2021-12-06 20:21:18,187 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 5507 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 3202 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5507 SdHoareTripleChecker+Valid, 3826 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:18,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5507 Valid, 3826 Invalid, 3249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3202 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-06 20:21:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54779 states. [2021-12-06 20:21:22,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54779 to 7709. [2021-12-06 20:21:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7709 states, 7708 states have (on average 1.2865853658536586) internal successors, (9917), 7708 states have internal predecessors, (9917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:21:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7709 states to 7709 states and 9917 transitions. [2021-12-06 20:21:22,854 INFO L78 Accepts]: Start accepts. Automaton has 7709 states and 9917 transitions. Word has length 185 [2021-12-06 20:21:22,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:22,854 INFO L470 AbstractCegarLoop]: Abstraction has 7709 states and 9917 transitions. [2021-12-06 20:21:22,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.333333333333334) internal successors, (185), 14 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:21:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 7709 states and 9917 transitions. [2021-12-06 20:21:22,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 20:21:22,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:22,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:21:22,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-06 20:21:22,858 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:21:22,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:22,858 INFO L85 PathProgramCache]: Analyzing trace with hash -267499248, now seen corresponding path program 1 times [2021-12-06 20:21:22,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:22,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027589421] [2021-12-06 20:21:22,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:22,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:21:23,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:23,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027589421] [2021-12-06 20:21:23,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027589421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:21:23,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:21:23,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 20:21:23,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406774322] [2021-12-06 20:21:23,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:21:23,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 20:21:23,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:23,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 20:21:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:21:23,045 INFO L87 Difference]: Start difference. First operand 7709 states and 9917 transitions. Second operand has 16 states, 16 states have (on average 11.625) internal successors, (186), 15 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:22:03,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:22:03,058 INFO L93 Difference]: Finished difference Result 57556 states and 76075 transitions. [2021-12-06 20:22:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-12-06 20:22:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 15 states have internal predecessors, (186), 0 states have call successors, (0), 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 186 [2021-12-06 20:22:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:22:03,117 INFO L225 Difference]: With dead ends: 57556 [2021-12-06 20:22:03,117 INFO L226 Difference]: Without dead ends: 55084 [2021-12-06 20:22:03,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2479 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1522, Invalid=6134, Unknown=0, NotChecked=0, Total=7656 [2021-12-06 20:22:03,129 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 10134 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 3052 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10134 SdHoareTripleChecker+Valid, 3662 SdHoareTripleChecker+Invalid, 3318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 3052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:22:03,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10134 Valid, 3662 Invalid, 3318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 3052 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 20:22:03,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55084 states. [2021-12-06 20:22:07,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55084 to 7358. [2021-12-06 20:22:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7358 states, 7357 states have (on average 1.2863939105613702) internal successors, (9464), 7357 states have internal predecessors, (9464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:22:07,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7358 states to 7358 states and 9464 transitions. [2021-12-06 20:22:07,830 INFO L78 Accepts]: Start accepts. Automaton has 7358 states and 9464 transitions. Word has length 186 [2021-12-06 20:22:07,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:22:07,831 INFO L470 AbstractCegarLoop]: Abstraction has 7358 states and 9464 transitions. [2021-12-06 20:22:07,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.625) internal successors, (186), 15 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:22:07,831 INFO L276 IsEmpty]: Start isEmpty. Operand 7358 states and 9464 transitions. [2021-12-06 20:22:07,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-06 20:22:07,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:22:07,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:22:07,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-06 20:22:07,835 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:22:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:22:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1563263009, now seen corresponding path program 1 times [2021-12-06 20:22:07,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:22:07,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942159033] [2021-12-06 20:22:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:07,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:22:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:22:08,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:08,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942159033] [2021-12-06 20:22:08,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942159033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:22:08,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:22:08,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 20:22:08,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887153702] [2021-12-06 20:22:08,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:22:08,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:22:08,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:22:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:22:08,044 INFO L87 Difference]: Start difference. First operand 7358 states and 9464 transitions. Second operand has 13 states, 13 states have (on average 14.384615384615385) internal successors, (187), 13 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)