/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:04:20,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:04:20,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:04:20,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:04:20,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:04:20,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:04:20,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:04:20,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:04:20,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:04:20,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:04:20,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:04:20,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:04:20,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:04:20,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:04:20,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:04:20,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:04:20,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:04:20,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:04:20,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:04:20,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:04:20,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:04:20,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:04:20,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:04:20,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:04:20,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:04:20,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:04:20,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:04:20,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:04:20,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:04:20,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:04:20,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:04:20,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:04:20,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:04:20,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:04:20,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:04:20,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:04:20,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:04:20,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:04:20,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:04:20,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:04:20,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:04:20,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:04:20,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:04:20,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:04:20,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:04:20,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:04:20,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:04:20,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:04:20,706 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:04:20,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:04:20,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:04:20,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:04:20,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:04:20,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:04:20,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:04:20,707 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:04:20,707 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:04:20,707 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:04:20,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:04:20,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:04:20,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:04:20,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:04:20,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:04:20,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:04:20,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:04:20,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:04:20,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:04:20,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:04:20,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:04:20,708 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:04:20,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:04:20,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:04:20,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:04:20,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:04:20,709 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:04:20,709 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:04:20,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:04:20,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:04:20,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:04:20,886 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:04:20,901 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:04:20,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2022-01-11 06:04:20,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7610703d3/f30226f42c8741e7a19e14ab0052880d/FLAGf20802c73 [2022-01-11 06:04:21,297 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:04:21,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2022-01-11 06:04:21,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7610703d3/f30226f42c8741e7a19e14ab0052880d/FLAGf20802c73 [2022-01-11 06:04:21,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7610703d3/f30226f42c8741e7a19e14ab0052880d [2022-01-11 06:04:21,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:04:21,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:04:21,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:04:21,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:04:21,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:04:21,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:04:21" (1/1) ... [2022-01-11 06:04:21,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ceafcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:21, skipping insertion in model container [2022-01-11 06:04:21,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:04:21" (1/1) ... [2022-01-11 06:04:21,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:04:21,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:04:21,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c[646,659] [2022-01-11 06:04:22,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:04:22,041 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:04:22,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c[646,659] [2022-01-11 06:04:22,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:04:22,111 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:04:22,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22 WrapperNode [2022-01-11 06:04:22,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:04:22,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:04:22,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:04:22,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:04:22,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22" (1/1) ... [2022-01-11 06:04:22,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22" (1/1) ... [2022-01-11 06:04:22,168 INFO L137 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 878 [2022-01-11 06:04:22,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:04:22,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:04:22,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:04:22,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:04:22,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22" (1/1) ... [2022-01-11 06:04:22,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22" (1/1) ... [2022-01-11 06:04:22,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22" (1/1) ... [2022-01-11 06:04:22,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22" (1/1) ... [2022-01-11 06:04:22,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22" (1/1) ... [2022-01-11 06:04:22,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22" (1/1) ... [2022-01-11 06:04:22,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22" (1/1) ... [2022-01-11 06:04:22,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:04:22,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:04:22,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:04:22,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:04:22,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22" (1/1) ... [2022-01-11 06:04:22,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:04:22,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:04:22,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:04:22,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:04:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:04:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:04:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:04:22,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:04:22,354 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:04:22,355 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:04:22,910 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:04:22,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:04:22,924 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-11 06:04:22,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:04:22 BoogieIcfgContainer [2022-01-11 06:04:22,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:04:22,928 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:04:22,928 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:04:22,929 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:04:22,931 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:04:22" (1/1) ... [2022-01-11 06:04:23,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:04:23 BasicIcfg [2022-01-11 06:04:23,113 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:04:23,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:04:23,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:04:23,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:04:23,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:04:21" (1/4) ... [2022-01-11 06:04:23,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69df9db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:04:23, skipping insertion in model container [2022-01-11 06:04:23,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:04:22" (2/4) ... [2022-01-11 06:04:23,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69df9db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:04:23, skipping insertion in model container [2022-01-11 06:04:23,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:04:22" (3/4) ... [2022-01-11 06:04:23,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69df9db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:04:23, skipping insertion in model container [2022-01-11 06:04:23,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:04:23" (4/4) ... [2022-01-11 06:04:23,119 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.4.cil.cTransformedIcfg [2022-01-11 06:04:23,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:04:23,125 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-11 06:04:23,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:04:23,176 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 [2022-01-11 06:04:23,176 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-11 06:04:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 277 states have (on average 1.8447653429602888) internal successors, (511), 282 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-11 06:04:23,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:23,208 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] [2022-01-11 06:04:23,209 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1981427744, now seen corresponding path program 1 times [2022-01-11 06:04:23,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:23,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74006532] [2022-01-11 06:04:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:23,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:23,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:23,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74006532] [2022-01-11 06:04:23,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74006532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:23,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:23,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:23,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417356689] [2022-01-11 06:04:23,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:23,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:23,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:23,477 INFO L87 Difference]: Start difference. First operand has 283 states, 277 states have (on average 1.8447653429602888) internal successors, (511), 282 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:23,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:23,777 INFO L93 Difference]: Finished difference Result 742 states and 1339 transitions. [2022-01-11 06:04:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:23,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-01-11 06:04:23,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:23,795 INFO L225 Difference]: With dead ends: 742 [2022-01-11 06:04:23,795 INFO L226 Difference]: Without dead ends: 456 [2022-01-11 06:04:23,800 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 [2022-01-11 06:04:23,803 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 266 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:23,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 787 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:04:23,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-01-11 06:04:23,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 440. [2022-01-11 06:04:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 435 states have (on average 1.5954022988505747) internal successors, (694), 439 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 694 transitions. [2022-01-11 06:04:23,875 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 694 transitions. Word has length 28 [2022-01-11 06:04:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:23,876 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 694 transitions. [2022-01-11 06:04:23,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 694 transitions. [2022-01-11 06:04:23,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-11 06:04:23,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:23,882 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] [2022-01-11 06:04:23,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:04:23,882 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:23,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1967491611, now seen corresponding path program 1 times [2022-01-11 06:04:23,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:23,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262913642] [2022-01-11 06:04:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:23,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:23,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:23,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262913642] [2022-01-11 06:04:23,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262913642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:23,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:23,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:23,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793417281] [2022-01-11 06:04:23,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:23,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:23,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:23,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:23,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:23,965 INFO L87 Difference]: Start difference. First operand 440 states and 694 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:24,061 INFO L93 Difference]: Finished difference Result 1247 states and 1958 transitions. [2022-01-11 06:04:24,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:24,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-11 06:04:24,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:24,064 INFO L225 Difference]: With dead ends: 1247 [2022-01-11 06:04:24,065 INFO L226 Difference]: Without dead ends: 818 [2022-01-11 06:04:24,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:24,070 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 373 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:24,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 829 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:24,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-01-11 06:04:24,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 804. [2022-01-11 06:04:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 799 states have (on average 1.5381727158948686) internal successors, (1229), 803 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1229 transitions. [2022-01-11 06:04:24,099 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1229 transitions. Word has length 39 [2022-01-11 06:04:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:24,099 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1229 transitions. [2022-01-11 06:04:24,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1229 transitions. [2022-01-11 06:04:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-11 06:04:24,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:24,101 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] [2022-01-11 06:04:24,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:04:24,103 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:24,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:24,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1382376993, now seen corresponding path program 1 times [2022-01-11 06:04:24,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:24,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443356975] [2022-01-11 06:04:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:24,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:24,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:24,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443356975] [2022-01-11 06:04:24,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443356975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:24,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:24,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:24,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486503418] [2022-01-11 06:04:24,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:24,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:24,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:24,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:24,202 INFO L87 Difference]: Start difference. First operand 804 states and 1229 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:24,314 INFO L93 Difference]: Finished difference Result 2121 states and 3295 transitions. [2022-01-11 06:04:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:24,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-11 06:04:24,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:24,320 INFO L225 Difference]: With dead ends: 2121 [2022-01-11 06:04:24,320 INFO L226 Difference]: Without dead ends: 1329 [2022-01-11 06:04:24,323 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 [2022-01-11 06:04:24,326 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 323 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:24,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 1000 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:24,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-01-11 06:04:24,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1307. [2022-01-11 06:04:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1302 states have (on average 1.576804915514593) internal successors, (2053), 1306 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2053 transitions. [2022-01-11 06:04:24,356 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2053 transitions. Word has length 39 [2022-01-11 06:04:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:24,356 INFO L470 AbstractCegarLoop]: Abstraction has 1307 states and 2053 transitions. [2022-01-11 06:04:24,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2053 transitions. [2022-01-11 06:04:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-11 06:04:24,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:24,359 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] [2022-01-11 06:04:24,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:04:24,359 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:24,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:24,360 INFO L85 PathProgramCache]: Analyzing trace with hash 481076696, now seen corresponding path program 1 times [2022-01-11 06:04:24,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:24,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749321468] [2022-01-11 06:04:24,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:24,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:24,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:24,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749321468] [2022-01-11 06:04:24,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749321468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:24,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:24,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:24,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749659386] [2022-01-11 06:04:24,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:24,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:24,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:24,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:24,433 INFO L87 Difference]: Start difference. First operand 1307 states and 2053 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:24,509 INFO L93 Difference]: Finished difference Result 3259 states and 5123 transitions. [2022-01-11 06:04:24,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:24,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-01-11 06:04:24,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:24,516 INFO L225 Difference]: With dead ends: 3259 [2022-01-11 06:04:24,516 INFO L226 Difference]: Without dead ends: 1973 [2022-01-11 06:04:24,518 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 [2022-01-11 06:04:24,522 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 350 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:24,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 809 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:24,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2022-01-11 06:04:24,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1939. [2022-01-11 06:04:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1934 states have (on average 1.5734229576008274) internal successors, (3043), 1938 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 3043 transitions. [2022-01-11 06:04:24,573 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 3043 transitions. Word has length 40 [2022-01-11 06:04:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:24,573 INFO L470 AbstractCegarLoop]: Abstraction has 1939 states and 3043 transitions. [2022-01-11 06:04:24,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 3043 transitions. [2022-01-11 06:04:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-11 06:04:24,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:24,575 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:24,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:04:24,575 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1878614006, now seen corresponding path program 1 times [2022-01-11 06:04:24,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:24,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938037063] [2022-01-11 06:04:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:24,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:24,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:24,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938037063] [2022-01-11 06:04:24,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938037063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:24,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:24,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:24,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8300299] [2022-01-11 06:04:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:24,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:24,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:24,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:24,636 INFO L87 Difference]: Start difference. First operand 1939 states and 3043 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:24,711 INFO L93 Difference]: Finished difference Result 4816 states and 7596 transitions. [2022-01-11 06:04:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:24,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-01-11 06:04:24,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:24,720 INFO L225 Difference]: With dead ends: 4816 [2022-01-11 06:04:24,721 INFO L226 Difference]: Without dead ends: 2898 [2022-01-11 06:04:24,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:24,726 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 411 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:24,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 1061 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:24,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2022-01-11 06:04:24,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2732. [2022-01-11 06:04:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2727 states have (on average 1.5669233590025669) internal successors, (4273), 2731 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 4273 transitions. [2022-01-11 06:04:24,826 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 4273 transitions. Word has length 47 [2022-01-11 06:04:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:24,828 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 4273 transitions. [2022-01-11 06:04:24,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 4273 transitions. [2022-01-11 06:04:24,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 06:04:24,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:24,830 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] [2022-01-11 06:04:24,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:04:24,830 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:24,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:24,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1756396944, now seen corresponding path program 1 times [2022-01-11 06:04:24,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:24,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379620269] [2022-01-11 06:04:24,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:24,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:24,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:24,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379620269] [2022-01-11 06:04:24,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379620269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:24,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:24,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:24,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187979375] [2022-01-11 06:04:24,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:24,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:24,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:24,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:24,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:24,862 INFO L87 Difference]: Start difference. First operand 2732 states and 4273 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:24,946 INFO L93 Difference]: Finished difference Result 5695 states and 8937 transitions. [2022-01-11 06:04:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:24,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-11 06:04:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:24,956 INFO L225 Difference]: With dead ends: 5695 [2022-01-11 06:04:24,956 INFO L226 Difference]: Without dead ends: 3033 [2022-01-11 06:04:24,960 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 [2022-01-11 06:04:24,960 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 368 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:24,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 718 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:24,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2022-01-11 06:04:25,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 2923. [2022-01-11 06:04:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2918 states have (on average 1.5613433858807402) internal successors, (4556), 2922 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4556 transitions. [2022-01-11 06:04:25,048 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4556 transitions. Word has length 52 [2022-01-11 06:04:25,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:25,048 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 4556 transitions. [2022-01-11 06:04:25,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4556 transitions. [2022-01-11 06:04:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 06:04:25,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:25,049 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] [2022-01-11 06:04:25,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:04:25,050 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:25,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1870863843, now seen corresponding path program 1 times [2022-01-11 06:04:25,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:25,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812807110] [2022-01-11 06:04:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:25,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:25,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:25,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812807110] [2022-01-11 06:04:25,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812807110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:25,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:25,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:25,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160653246] [2022-01-11 06:04:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:25,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:25,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:25,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:25,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:25,138 INFO L87 Difference]: Start difference. First operand 2923 states and 4556 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:25,418 INFO L93 Difference]: Finished difference Result 7018 states and 11032 transitions. [2022-01-11 06:04:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-11 06:04:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:25,433 INFO L225 Difference]: With dead ends: 7018 [2022-01-11 06:04:25,433 INFO L226 Difference]: Without dead ends: 4165 [2022-01-11 06:04:25,437 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 [2022-01-11 06:04:25,438 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 360 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:25,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 782 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:04:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2022-01-11 06:04:25,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4078. [2022-01-11 06:04:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 4073 states have (on average 1.5487355757426957) internal successors, (6308), 4077 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 6308 transitions. [2022-01-11 06:04:25,546 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 6308 transitions. Word has length 60 [2022-01-11 06:04:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:25,546 INFO L470 AbstractCegarLoop]: Abstraction has 4078 states and 6308 transitions. [2022-01-11 06:04:25,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 6308 transitions. [2022-01-11 06:04:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 06:04:25,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:25,548 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] [2022-01-11 06:04:25,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:04:25,548 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:25,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:25,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1834363456, now seen corresponding path program 1 times [2022-01-11 06:04:25,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:25,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832178186] [2022-01-11 06:04:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:25,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:25,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:25,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832178186] [2022-01-11 06:04:25,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832178186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:25,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:25,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:25,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069357354] [2022-01-11 06:04:25,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:25,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:25,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:25,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:25,605 INFO L87 Difference]: Start difference. First operand 4078 states and 6308 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:25,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:25,777 INFO L93 Difference]: Finished difference Result 8086 states and 12532 transitions. [2022-01-11 06:04:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:25,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-11 06:04:25,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:25,789 INFO L225 Difference]: With dead ends: 8086 [2022-01-11 06:04:25,789 INFO L226 Difference]: Without dead ends: 4078 [2022-01-11 06:04:25,794 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 [2022-01-11 06:04:25,795 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 345 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:25,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 443 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:25,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2022-01-11 06:04:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 4078. [2022-01-11 06:04:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 4073 states have (on average 1.5266388411490301) internal successors, (6218), 4077 states have internal predecessors, (6218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 6218 transitions. [2022-01-11 06:04:25,926 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 6218 transitions. Word has length 62 [2022-01-11 06:04:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:25,927 INFO L470 AbstractCegarLoop]: Abstraction has 4078 states and 6218 transitions. [2022-01-11 06:04:25,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:25,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 6218 transitions. [2022-01-11 06:04:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:04:25,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:25,929 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] [2022-01-11 06:04:25,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:04:25,929 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1243234201, now seen corresponding path program 1 times [2022-01-11 06:04:25,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:25,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079899344] [2022-01-11 06:04:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:25,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:25,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:25,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079899344] [2022-01-11 06:04:25,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079899344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:25,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:25,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:25,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719550673] [2022-01-11 06:04:25,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:25,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:25,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:25,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:25,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:25,976 INFO L87 Difference]: Start difference. First operand 4078 states and 6218 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:26,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:26,303 INFO L93 Difference]: Finished difference Result 9206 states and 14086 transitions. [2022-01-11 06:04:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:26,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-11 06:04:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:26,335 INFO L225 Difference]: With dead ends: 9206 [2022-01-11 06:04:26,335 INFO L226 Difference]: Without dead ends: 5198 [2022-01-11 06:04:26,341 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 [2022-01-11 06:04:26,342 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 243 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:26,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 857 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:04:26,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2022-01-11 06:04:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 5118. [2022-01-11 06:04:26,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5118 states, 5113 states have (on average 1.4930569137492666) internal successors, (7634), 5117 states have internal predecessors, (7634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 7634 transitions. [2022-01-11 06:04:26,489 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 7634 transitions. Word has length 63 [2022-01-11 06:04:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:26,490 INFO L470 AbstractCegarLoop]: Abstraction has 5118 states and 7634 transitions. [2022-01-11 06:04:26,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:26,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 7634 transitions. [2022-01-11 06:04:26,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:04:26,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:26,492 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] [2022-01-11 06:04:26,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:04:26,492 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:26,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:26,492 INFO L85 PathProgramCache]: Analyzing trace with hash -784875757, now seen corresponding path program 1 times [2022-01-11 06:04:26,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:26,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960956976] [2022-01-11 06:04:26,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:26,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:26,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:26,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960956976] [2022-01-11 06:04:26,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960956976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:26,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:26,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:04:26,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067576590] [2022-01-11 06:04:26,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:26,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:04:26,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:26,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:04:26,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:04:26,548 INFO L87 Difference]: Start difference. First operand 5118 states and 7634 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:27,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:27,199 INFO L93 Difference]: Finished difference Result 24537 states and 36580 transitions. [2022-01-11 06:04:27,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:04:27,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-11 06:04:27,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:27,233 INFO L225 Difference]: With dead ends: 24537 [2022-01-11 06:04:27,234 INFO L226 Difference]: Without dead ends: 19762 [2022-01-11 06:04:27,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 06:04:27,244 INFO L933 BasicCegarLoop]: 1384 mSDtfsCounter, 1522 mSDsluCounter, 2977 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 4361 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:27,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 4361 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:27,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19762 states. [2022-01-11 06:04:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19762 to 7058. [2022-01-11 06:04:27,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7058 states, 7053 states have (on average 1.4870267971076139) internal successors, (10488), 7057 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7058 states to 7058 states and 10488 transitions. [2022-01-11 06:04:27,729 INFO L78 Accepts]: Start accepts. Automaton has 7058 states and 10488 transitions. Word has length 65 [2022-01-11 06:04:27,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:27,729 INFO L470 AbstractCegarLoop]: Abstraction has 7058 states and 10488 transitions. [2022-01-11 06:04:27,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:27,730 INFO L276 IsEmpty]: Start isEmpty. Operand 7058 states and 10488 transitions. [2022-01-11 06:04:27,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:04:27,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:27,732 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] [2022-01-11 06:04:27,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:04:27,733 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:27,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:27,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1938238820, now seen corresponding path program 1 times [2022-01-11 06:04:27,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:27,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693661076] [2022-01-11 06:04:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:27,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:27,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:27,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693661076] [2022-01-11 06:04:27,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693661076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:27,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:27,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:04:27,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262653425] [2022-01-11 06:04:27,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:27,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:04:27,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:27,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:04:27,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:04:27,821 INFO L87 Difference]: Start difference. First operand 7058 states and 10488 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:29,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:29,452 INFO L93 Difference]: Finished difference Result 32594 states and 48435 transitions. [2022-01-11 06:04:29,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-11 06:04:29,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-11 06:04:29,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:29,509 INFO L225 Difference]: With dead ends: 32594 [2022-01-11 06:04:29,509 INFO L226 Difference]: Without dead ends: 25557 [2022-01-11 06:04:29,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2022-01-11 06:04:29,526 INFO L933 BasicCegarLoop]: 1847 mSDtfsCounter, 3904 mSDsluCounter, 5751 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3904 SdHoareTripleChecker+Valid, 7598 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:29,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3904 Valid, 7598 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 06:04:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25557 states. [2022-01-11 06:04:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25557 to 4441. [2022-01-11 06:04:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4441 states, 4436 states have (on average 1.475653742110009) internal successors, (6546), 4440 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 6546 transitions. [2022-01-11 06:04:29,989 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 6546 transitions. Word has length 66 [2022-01-11 06:04:29,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:29,989 INFO L470 AbstractCegarLoop]: Abstraction has 4441 states and 6546 transitions. [2022-01-11 06:04:29,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:29,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 6546 transitions. [2022-01-11 06:04:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-11 06:04:29,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:29,991 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:29,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:04:29,991 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:29,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:29,992 INFO L85 PathProgramCache]: Analyzing trace with hash -932811973, now seen corresponding path program 1 times [2022-01-11 06:04:29,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:29,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768952456] [2022-01-11 06:04:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:29,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:30,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:30,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768952456] [2022-01-11 06:04:30,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768952456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:30,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:30,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:30,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157393945] [2022-01-11 06:04:30,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:30,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:30,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:30,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:30,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:30,023 INFO L87 Difference]: Start difference. First operand 4441 states and 6546 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:30,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:30,427 INFO L93 Difference]: Finished difference Result 10874 states and 15954 transitions. [2022-01-11 06:04:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:30,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-11 06:04:30,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:30,438 INFO L225 Difference]: With dead ends: 10874 [2022-01-11 06:04:30,439 INFO L226 Difference]: Without dead ends: 6342 [2022-01-11 06:04:30,444 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 [2022-01-11 06:04:30,444 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 280 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:30,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 1029 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:30,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6342 states. [2022-01-11 06:04:31,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6342 to 6287. [2022-01-11 06:04:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6287 states, 6282 states have (on average 1.4584527220630372) internal successors, (9162), 6286 states have internal predecessors, (9162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6287 states to 6287 states and 9162 transitions. [2022-01-11 06:04:31,068 INFO L78 Accepts]: Start accepts. Automaton has 6287 states and 9162 transitions. Word has length 90 [2022-01-11 06:04:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:31,068 INFO L470 AbstractCegarLoop]: Abstraction has 6287 states and 9162 transitions. [2022-01-11 06:04:31,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:31,068 INFO L276 IsEmpty]: Start isEmpty. Operand 6287 states and 9162 transitions. [2022-01-11 06:04:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:04:31,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:31,070 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:31,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:04:31,070 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:31,071 INFO L85 PathProgramCache]: Analyzing trace with hash 946959331, now seen corresponding path program 1 times [2022-01-11 06:04:31,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:31,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653459158] [2022-01-11 06:04:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:31,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:04:31,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:31,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653459158] [2022-01-11 06:04:31,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653459158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:31,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:31,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:31,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678599571] [2022-01-11 06:04:31,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:31,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:31,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:31,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:31,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:31,149 INFO L87 Difference]: Start difference. First operand 6287 states and 9162 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:31,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:31,540 INFO L93 Difference]: Finished difference Result 10880 states and 15726 transitions. [2022-01-11 06:04:31,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:31,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-01-11 06:04:31,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:31,547 INFO L225 Difference]: With dead ends: 10880 [2022-01-11 06:04:31,547 INFO L226 Difference]: Without dead ends: 4522 [2022-01-11 06:04:31,553 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 [2022-01-11 06:04:31,554 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 340 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:31,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 542 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:31,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2022-01-11 06:04:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4456. [2022-01-11 06:04:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4451 states have (on average 1.37227589305774) internal successors, (6108), 4455 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 6108 transitions. [2022-01-11 06:04:31,823 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 6108 transitions. Word has length 98 [2022-01-11 06:04:31,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:31,823 INFO L470 AbstractCegarLoop]: Abstraction has 4456 states and 6108 transitions. [2022-01-11 06:04:31,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:31,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 6108 transitions. [2022-01-11 06:04:31,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:04:31,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:31,825 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:31,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:04:31,825 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:31,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1319892603, now seen corresponding path program 1 times [2022-01-11 06:04:31,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:31,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754912857] [2022-01-11 06:04:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:31,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 06:04:31,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:31,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754912857] [2022-01-11 06:04:31,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754912857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:31,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:31,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:31,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436309230] [2022-01-11 06:04:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:31,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:31,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:31,862 INFO L87 Difference]: Start difference. First operand 4456 states and 6108 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:32,123 INFO L93 Difference]: Finished difference Result 8739 states and 12020 transitions. [2022-01-11 06:04:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:32,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 100 [2022-01-11 06:04:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:32,129 INFO L225 Difference]: With dead ends: 8739 [2022-01-11 06:04:32,129 INFO L226 Difference]: Without dead ends: 4450 [2022-01-11 06:04:32,134 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 [2022-01-11 06:04:32,135 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 342 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:32,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 542 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4450 states. [2022-01-11 06:04:32,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4450 to 4432. [2022-01-11 06:04:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4432 states, 4427 states have (on average 1.325050824486108) internal successors, (5866), 4431 states have internal predecessors, (5866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 5866 transitions. [2022-01-11 06:04:32,467 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 5866 transitions. Word has length 100 [2022-01-11 06:04:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:32,467 INFO L470 AbstractCegarLoop]: Abstraction has 4432 states and 5866 transitions. [2022-01-11 06:04:32,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 5866 transitions. [2022-01-11 06:04:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:04:32,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:32,468 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:32,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:04:32,469 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1320905497, now seen corresponding path program 1 times [2022-01-11 06:04:32,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:32,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834325869] [2022-01-11 06:04:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:32,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 06:04:32,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:32,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834325869] [2022-01-11 06:04:32,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834325869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:32,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:32,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:32,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860960639] [2022-01-11 06:04:32,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:32,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:32,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:32,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:32,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:32,517 INFO L87 Difference]: Start difference. First operand 4432 states and 5866 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:32,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:32,737 INFO L93 Difference]: Finished difference Result 7897 states and 10484 transitions. [2022-01-11 06:04:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:32,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 100 [2022-01-11 06:04:32,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:32,742 INFO L225 Difference]: With dead ends: 7897 [2022-01-11 06:04:32,742 INFO L226 Difference]: Without dead ends: 3499 [2022-01-11 06:04:32,748 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 [2022-01-11 06:04:32,749 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 260 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:32,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 416 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:32,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2022-01-11 06:04:33,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 3195. [2022-01-11 06:04:33,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 3190 states have (on average 1.297805642633229) internal successors, (4140), 3194 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4140 transitions. [2022-01-11 06:04:33,069 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4140 transitions. Word has length 100 [2022-01-11 06:04:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:33,069 INFO L470 AbstractCegarLoop]: Abstraction has 3195 states and 4140 transitions. [2022-01-11 06:04:33,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4140 transitions. [2022-01-11 06:04:33,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-11 06:04:33,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:33,070 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:33,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:04:33,071 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:33,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2001635262, now seen corresponding path program 1 times [2022-01-11 06:04:33,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:33,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950829600] [2022-01-11 06:04:33,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:33,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 06:04:33,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:33,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950829600] [2022-01-11 06:04:33,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950829600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:33,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:33,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:33,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248759382] [2022-01-11 06:04:33,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:33,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:33,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:33,125 INFO L87 Difference]: Start difference. First operand 3195 states and 4140 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:33,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:33,386 INFO L93 Difference]: Finished difference Result 3213 states and 4154 transitions. [2022-01-11 06:04:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:33,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 101 [2022-01-11 06:04:33,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:33,390 INFO L225 Difference]: With dead ends: 3213 [2022-01-11 06:04:33,390 INFO L226 Difference]: Without dead ends: 3209 [2022-01-11 06:04:33,391 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 [2022-01-11 06:04:33,392 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 227 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:33,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 694 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-01-11 06:04:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 3195. [2022-01-11 06:04:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 3190 states have (on average 1.290909090909091) internal successors, (4118), 3194 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:33,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4118 transitions. [2022-01-11 06:04:33,662 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4118 transitions. Word has length 101 [2022-01-11 06:04:33,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:33,663 INFO L470 AbstractCegarLoop]: Abstraction has 3195 states and 4118 transitions. [2022-01-11 06:04:33,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:33,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4118 transitions. [2022-01-11 06:04:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 06:04:33,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:33,668 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:33,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:04:33,669 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:33,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:33,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1691943372, now seen corresponding path program 1 times [2022-01-11 06:04:33,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:33,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267725937] [2022-01-11 06:04:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:33,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 06:04:33,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:33,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267725937] [2022-01-11 06:04:33,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267725937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:33,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:33,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:04:33,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575145282] [2022-01-11 06:04:33,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:33,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:04:33,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:33,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:04:33,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:04:33,756 INFO L87 Difference]: Start difference. First operand 3195 states and 4118 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 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) [2022-01-11 06:04:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:35,046 INFO L93 Difference]: Finished difference Result 15410 states and 19922 transitions. [2022-01-11 06:04:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 06:04:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 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 162 [2022-01-11 06:04:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:35,065 INFO L225 Difference]: With dead ends: 15410 [2022-01-11 06:04:35,065 INFO L226 Difference]: Without dead ends: 12398 [2022-01-11 06:04:35,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 06:04:35,072 INFO L933 BasicCegarLoop]: 1214 mSDtfsCounter, 2161 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 4121 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:35,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2161 Valid, 4121 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:35,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12398 states. [2022-01-11 06:04:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12398 to 3197. [2022-01-11 06:04:35,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3197 states, 3192 states have (on average 1.2882205513784462) internal successors, (4112), 3196 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4112 transitions. [2022-01-11 06:04:35,385 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4112 transitions. Word has length 162 [2022-01-11 06:04:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:35,385 INFO L470 AbstractCegarLoop]: Abstraction has 3197 states and 4112 transitions. [2022-01-11 06:04:35,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 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) [2022-01-11 06:04:35,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4112 transitions. [2022-01-11 06:04:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 06:04:35,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:35,387 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:35,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:04:35,388 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash 228002810, now seen corresponding path program 1 times [2022-01-11 06:04:35,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:35,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128178440] [2022-01-11 06:04:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:35,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-11 06:04:35,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:35,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128178440] [2022-01-11 06:04:35,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128178440] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:04:35,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270116379] [2022-01-11 06:04:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:35,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:04:35,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:04:35,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 06:04:35,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 06:04:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:35,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 06:04:35,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:04:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 06:04:36,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:04:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-11 06:04:37,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270116379] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 06:04:37,237 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 06:04:37,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 26 [2022-01-11 06:04:37,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999259588] [2022-01-11 06:04:37,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 06:04:37,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-11 06:04:37,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-11 06:04:37,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2022-01-11 06:04:37,239 INFO L87 Difference]: Start difference. First operand 3197 states and 4112 transitions. Second operand has 26 states, 26 states have (on average 14.423076923076923) internal successors, (375), 26 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:52,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:52,644 INFO L93 Difference]: Finished difference Result 53506 states and 69496 transitions. [2022-01-11 06:04:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2022-01-11 06:04:52,645 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.423076923076923) internal successors, (375), 26 states have internal predecessors, (375), 0 states have call successors, (0), 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 164 [2022-01-11 06:04:52,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:52,733 INFO L225 Difference]: With dead ends: 53506 [2022-01-11 06:04:52,733 INFO L226 Difference]: Without dead ends: 50514 [2022-01-11 06:04:52,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 458 SyntacticMatches, 3 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27627 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7245, Invalid=57017, Unknown=0, NotChecked=0, Total=64262 [2022-01-11 06:04:52,756 INFO L933 BasicCegarLoop]: 5036 mSDtfsCounter, 32596 mSDsluCounter, 49777 mSDsCounter, 0 mSdLazyCounter, 4586 mSolverCounterSat, 1053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32596 SdHoareTripleChecker+Valid, 54813 SdHoareTripleChecker+Invalid, 5639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1053 IncrementalHoareTripleChecker+Valid, 4586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:52,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32596 Valid, 54813 Invalid, 5639 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1053 Valid, 4586 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-11 06:04:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50514 states. [2022-01-11 06:04:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50514 to 4874. [2022-01-11 06:04:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4869 states have (on average 1.3031423290203328) internal successors, (6345), 4873 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:53,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6345 transitions. [2022-01-11 06:04:53,869 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6345 transitions. Word has length 164 [2022-01-11 06:04:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:53,870 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 6345 transitions. [2022-01-11 06:04:53,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.423076923076923) internal successors, (375), 26 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:53,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6345 transitions. [2022-01-11 06:04:53,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-01-11 06:04:53,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:53,875 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:53,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 06:04:54,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-11 06:04:54,080 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:54,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:54,081 INFO L85 PathProgramCache]: Analyzing trace with hash 561821125, now seen corresponding path program 1 times [2022-01-11 06:04:54,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:54,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854768863] [2022-01-11 06:04:54,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:54,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-11 06:04:54,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:54,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854768863] [2022-01-11 06:04:54,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854768863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:54,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:54,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:54,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128247987] [2022-01-11 06:04:54,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:54,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:54,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:54,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:54,207 INFO L87 Difference]: Start difference. First operand 4874 states and 6345 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:55,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:55,506 INFO L93 Difference]: Finished difference Result 10960 states and 14338 transitions. [2022-01-11 06:04:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:55,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 263 [2022-01-11 06:04:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:55,515 INFO L225 Difference]: With dead ends: 10960 [2022-01-11 06:04:55,515 INFO L226 Difference]: Without dead ends: 6291 [2022-01-11 06:04:55,520 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 [2022-01-11 06:04:55,521 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 205 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:55,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 685 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:04:55,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2022-01-11 06:04:56,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 6081. [2022-01-11 06:04:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6081 states, 6076 states have (on average 1.2758393680052666) internal successors, (7752), 6080 states have internal predecessors, (7752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 7752 transitions. [2022-01-11 06:04:56,624 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 7752 transitions. Word has length 263 [2022-01-11 06:04:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:56,625 INFO L470 AbstractCegarLoop]: Abstraction has 6081 states and 7752 transitions. [2022-01-11 06:04:56,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 7752 transitions. [2022-01-11 06:04:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-11 06:04:56,628 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:56,628 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:56,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:04:56,628 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:56,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:56,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1543341266, now seen corresponding path program 1 times [2022-01-11 06:04:56,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:56,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683920154] [2022-01-11 06:04:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:56,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-11 06:04:56,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:56,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683920154] [2022-01-11 06:04:56,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683920154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:56,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:56,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:04:56,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975390493] [2022-01-11 06:04:56,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:56,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:04:56,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:56,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:04:56,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:04:56,702 INFO L87 Difference]: Start difference. First operand 6081 states and 7752 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) [2022-01-11 06:04:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:56,999 INFO L93 Difference]: Finished difference Result 7134 states and 8956 transitions. [2022-01-11 06:04:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:04:57,000 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 264 [2022-01-11 06:04:57,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:57,001 INFO L225 Difference]: With dead ends: 7134 [2022-01-11 06:04:57,001 INFO L226 Difference]: Without dead ends: 1142 [2022-01-11 06:04:57,008 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 [2022-01-11 06:04:57,010 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 139 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:57,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 411 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-01-11 06:04:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 934. [2022-01-11 06:04:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 931 states have (on average 1.1084854994629432) internal successors, (1032), 933 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1032 transitions. [2022-01-11 06:04:57,171 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1032 transitions. Word has length 264 [2022-01-11 06:04:57,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:57,171 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 1032 transitions. [2022-01-11 06:04:57,171 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) [2022-01-11 06:04:57,171 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1032 transitions. [2022-01-11 06:04:57,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-01-11 06:04:57,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:57,174 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:57,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:04:57,174 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:57,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:57,176 INFO L85 PathProgramCache]: Analyzing trace with hash 726369418, now seen corresponding path program 1 times [2022-01-11 06:04:57,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:57,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383568518] [2022-01-11 06:04:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:57,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:57,304 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-11 06:04:57,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:57,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383568518] [2022-01-11 06:04:57,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383568518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:57,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:57,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 06:04:57,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087057829] [2022-01-11 06:04:57,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:57,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 06:04:57,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:57,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 06:04:57,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:04:57,307 INFO L87 Difference]: Start difference. First operand 934 states and 1032 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:57,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:57,817 INFO L93 Difference]: Finished difference Result 2234 states and 2489 transitions. [2022-01-11 06:04:57,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 06:04:57,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 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 265 [2022-01-11 06:04:57,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:57,820 INFO L225 Difference]: With dead ends: 2234 [2022-01-11 06:04:57,820 INFO L226 Difference]: Without dead ends: 2009 [2022-01-11 06:04:57,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-01-11 06:04:57,821 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 976 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:57,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 2625 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:04:57,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2022-01-11 06:04:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1018. [2022-01-11 06:04:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 1015 states have (on average 1.110344827586207) internal successors, (1127), 1017 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:58,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1127 transitions. [2022-01-11 06:04:58,127 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1127 transitions. Word has length 265 [2022-01-11 06:04:58,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:58,128 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1127 transitions. [2022-01-11 06:04:58,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:58,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1127 transitions. [2022-01-11 06:04:58,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-11 06:04:58,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:58,130 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:58,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:04:58,130 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:58,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:58,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1960688645, now seen corresponding path program 1 times [2022-01-11 06:04:58,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:58,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054626478] [2022-01-11 06:04:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:58,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-11 06:04:58,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:58,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054626478] [2022-01-11 06:04:58,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054626478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:04:58,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:04:58,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:04:58,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796517789] [2022-01-11 06:04:58,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:04:58,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:04:58,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:04:58,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:04:58,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:04:58,231 INFO L87 Difference]: Start difference. First operand 1018 states and 1127 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:04:58,520 INFO L93 Difference]: Finished difference Result 1447 states and 1611 transitions. [2022-01-11 06:04:58,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:04:58,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 266 [2022-01-11 06:04:58,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:04:58,523 INFO L225 Difference]: With dead ends: 1447 [2022-01-11 06:04:58,523 INFO L226 Difference]: Without dead ends: 1222 [2022-01-11 06:04:58,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:04:58,524 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 463 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:04:58,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 986 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:04:58,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-11 06:04:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1004. [2022-01-11 06:04:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1002 states have (on average 1.0978043912175648) internal successors, (1100), 1003 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1100 transitions. [2022-01-11 06:04:58,732 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1100 transitions. Word has length 266 [2022-01-11 06:04:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:04:58,732 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1100 transitions. [2022-01-11 06:04:58,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:04:58,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1100 transitions. [2022-01-11 06:04:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-01-11 06:04:58,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:04:58,734 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:04:58,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:04:58,735 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:04:58,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:04:58,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1685832810, now seen corresponding path program 1 times [2022-01-11 06:04:58,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:04:58,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180798197] [2022-01-11 06:04:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:58,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:04:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 147 proven. 46 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-11 06:04:58,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:04:58,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180798197] [2022-01-11 06:04:58,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180798197] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:04:58,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632080413] [2022-01-11 06:04:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:04:58,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:04:58,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:04:58,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 06:04:58,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 06:04:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:04:59,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-11 06:04:59,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:04:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 147 proven. 44 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-11 06:04:59,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:05:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-11 06:05:00,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632080413] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 06:05:00,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-11 06:05:00,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 24 [2022-01-11 06:05:00,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532151346] [2022-01-11 06:05:00,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:00,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 06:05:00,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 06:05:00,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-01-11 06:05:00,635 INFO L87 Difference]: Start difference. First operand 1004 states and 1100 transitions. Second operand has 10 states, 10 states have (on average 31.2) internal successors, (312), 10 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:02,073 INFO L93 Difference]: Finished difference Result 2350 states and 2575 transitions. [2022-01-11 06:05:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-11 06:05:02,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.2) internal successors, (312), 10 states have internal predecessors, (312), 0 states have call successors, (0), 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 323 [2022-01-11 06:05:02,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:02,076 INFO L225 Difference]: With dead ends: 2350 [2022-01-11 06:05:02,076 INFO L226 Difference]: Without dead ends: 2038 [2022-01-11 06:05:02,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 644 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=320, Invalid=1402, Unknown=0, NotChecked=0, Total=1722 [2022-01-11 06:05:02,082 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2735 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:02,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 1647 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:05:02,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2022-01-11 06:05:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1100. [2022-01-11 06:05:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1098 states have (on average 1.092896174863388) internal successors, (1200), 1099 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:02,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1200 transitions. [2022-01-11 06:05:02,483 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1200 transitions. Word has length 323 [2022-01-11 06:05:02,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:02,485 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1200 transitions. [2022-01-11 06:05:02,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.2) internal successors, (312), 10 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:02,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1200 transitions. [2022-01-11 06:05:02,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-11 06:05:02,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:02,487 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:02,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 06:05:02,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-11 06:05:02,709 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:05:02,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:02,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1942604674, now seen corresponding path program 1 times [2022-01-11 06:05:02,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:02,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604754128] [2022-01-11 06:05:02,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:02,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 107 proven. 105 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-11 06:05:02,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:02,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604754128] [2022-01-11 06:05:02,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604754128] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:05:02,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254114592] [2022-01-11 06:05:02,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:02,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:05:02,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:05:02,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 06:05:02,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 06:05:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:03,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 2246 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-11 06:05:03,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:05:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 204 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-11 06:05:03,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:05:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-11 06:05:04,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254114592] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 06:05:04,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-11 06:05:04,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 10] total 23 [2022-01-11 06:05:04,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864222558] [2022-01-11 06:05:04,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:04,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 06:05:04,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:04,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 06:05:04,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-01-11 06:05:04,338 INFO L87 Difference]: Start difference. First operand 1100 states and 1200 transitions. Second operand has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:05,910 INFO L93 Difference]: Finished difference Result 2508 states and 2741 transitions. [2022-01-11 06:05:05,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-11 06:05:05,910 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 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 324 [2022-01-11 06:05:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:05,913 INFO L225 Difference]: With dead ends: 2508 [2022-01-11 06:05:05,913 INFO L226 Difference]: Without dead ends: 2196 [2022-01-11 06:05:05,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 646 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=298, Invalid=1342, Unknown=0, NotChecked=0, Total=1640 [2022-01-11 06:05:05,915 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2855 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2855 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:05,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2855 Valid, 1560 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:05:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2022-01-11 06:05:06,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1100. [2022-01-11 06:05:06,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1098 states have (on average 1.092896174863388) internal successors, (1200), 1099 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:06,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1200 transitions. [2022-01-11 06:05:06,196 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1200 transitions. Word has length 324 [2022-01-11 06:05:06,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:06,196 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1200 transitions. [2022-01-11 06:05:06,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:06,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1200 transitions. [2022-01-11 06:05:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-01-11 06:05:06,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:06,199 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:06,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 06:05:06,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:05:06,419 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:05:06,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:06,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2123026580, now seen corresponding path program 1 times [2022-01-11 06:05:06,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:06,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875384195] [2022-01-11 06:05:06,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:06,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 303 proven. 46 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-01-11 06:05:06,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:06,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875384195] [2022-01-11 06:05:06,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875384195] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:05:06,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353564934] [2022-01-11 06:05:06,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:06,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:05:06,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:05:06,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 06:05:06,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 06:05:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:06,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-11 06:05:06,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:05:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 303 proven. 44 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-11 06:05:07,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:05:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 47 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-11 06:05:08,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353564934] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 06:05:08,515 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 06:05:08,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 14] total 28 [2022-01-11 06:05:08,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488685327] [2022-01-11 06:05:08,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 06:05:08,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-11 06:05:08,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:08,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-11 06:05:08,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-01-11 06:05:08,518 INFO L87 Difference]: Start difference. First operand 1100 states and 1200 transitions. Second operand has 28 states, 28 states have (on average 22.571428571428573) internal successors, (632), 28 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:14,233 INFO L93 Difference]: Finished difference Result 5732 states and 6273 transitions. [2022-01-11 06:05:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-01-11 06:05:14,233 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 22.571428571428573) internal successors, (632), 28 states have internal predecessors, (632), 0 states have call successors, (0), 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 424 [2022-01-11 06:05:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:14,238 INFO L225 Difference]: With dead ends: 5732 [2022-01-11 06:05:14,238 INFO L226 Difference]: Without dead ends: 5125 [2022-01-11 06:05:14,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 905 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9838 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3270, Invalid=22170, Unknown=0, NotChecked=0, Total=25440 [2022-01-11 06:05:14,242 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 18254 mSDsluCounter, 10606 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18254 SdHoareTripleChecker+Valid, 11552 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:14,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18254 Valid, 11552 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-11 06:05:14,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2022-01-11 06:05:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 1592. [2022-01-11 06:05:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1590 states have (on average 1.0874213836477988) internal successors, (1729), 1591 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 1729 transitions. [2022-01-11 06:05:14,727 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 1729 transitions. Word has length 424 [2022-01-11 06:05:14,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:14,727 INFO L470 AbstractCegarLoop]: Abstraction has 1592 states and 1729 transitions. [2022-01-11 06:05:14,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 22.571428571428573) internal successors, (632), 28 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 1729 transitions. [2022-01-11 06:05:14,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-01-11 06:05:14,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:14,750 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:14,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-11 06:05:14,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:05:14,966 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:05:14,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash 760978392, now seen corresponding path program 1 times [2022-01-11 06:05:14,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:14,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565641503] [2022-01-11 06:05:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:14,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 160 proven. 316 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-11 06:05:15,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:15,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565641503] [2022-01-11 06:05:15,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565641503] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:05:15,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995558982] [2022-01-11 06:05:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:15,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:05:15,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:05:15,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 06:05:15,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 06:05:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:15,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-11 06:05:15,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:05:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 359 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-01-11 06:05:16,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:05:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-01-11 06:05:16,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995558982] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 06:05:16,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-11 06:05:16,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 10] total 24 [2022-01-11 06:05:16,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793130558] [2022-01-11 06:05:16,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:16,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 06:05:16,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:16,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 06:05:16,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-01-11 06:05:16,967 INFO L87 Difference]: Start difference. First operand 1592 states and 1729 transitions. Second operand has 10 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:18,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:18,791 INFO L93 Difference]: Finished difference Result 3524 states and 3839 transitions. [2022-01-11 06:05:18,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-11 06:05:18,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 0 states have call successors, (0), 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 425 [2022-01-11 06:05:18,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:18,796 INFO L225 Difference]: With dead ends: 3524 [2022-01-11 06:05:18,796 INFO L226 Difference]: Without dead ends: 3212 [2022-01-11 06:05:18,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 846 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=298, Invalid=1424, Unknown=0, NotChecked=0, Total=1722 [2022-01-11 06:05:18,797 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2773 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:18,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2773 Valid, 1567 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:05:18,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2022-01-11 06:05:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 1592. [2022-01-11 06:05:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1590 states have (on average 1.0874213836477988) internal successors, (1729), 1591 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 1729 transitions. [2022-01-11 06:05:19,319 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 1729 transitions. Word has length 425 [2022-01-11 06:05:19,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:19,319 INFO L470 AbstractCegarLoop]: Abstraction has 1592 states and 1729 transitions. [2022-01-11 06:05:19,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:19,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 1729 transitions. [2022-01-11 06:05:19,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-01-11 06:05:19,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:19,322 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:19,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 06:05:19,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-11 06:05:19,542 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-11 06:05:19,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:19,542 INFO L85 PathProgramCache]: Analyzing trace with hash 198109038, now seen corresponding path program 1 times [2022-01-11 06:05:19,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:19,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404636594] [2022-01-11 06:05:19,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:19,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 399 proven. 52 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-11 06:05:19,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404636594] [2022-01-11 06:05:19,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404636594] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:05:19,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098103988] [2022-01-11 06:05:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:19,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:05:19,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:05:19,872 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 06:05:19,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 06:05:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:20,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-11 06:05:20,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 06:05:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 399 proven. 52 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-11 06:05:21,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 06:05:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 403 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-11 06:05:22,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098103988] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 06:05:22,307 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 06:05:22,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 37 [2022-01-11 06:05:22,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917600794] [2022-01-11 06:05:22,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 06:05:22,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-11 06:05:22,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:22,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-11 06:05:22,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2022-01-11 06:05:22,309 INFO L87 Difference]: Start difference. First operand 1592 states and 1729 transitions. Second operand has 37 states, 37 states have (on average 17.45945945945946) internal successors, (646), 37 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)