/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_LAZY.epf -i ../../../trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:26:42,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:26:42,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:26:43,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:26:43,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:26:43,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:26:43,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:26:43,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:26:43,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:26:43,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:26:43,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:26:43,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:26:43,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:26:43,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:26:43,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:26:43,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:26:43,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:26:43,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:26:43,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:26:43,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:26:43,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:26:43,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:26:43,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:26:43,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:26:43,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:26:43,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:26:43,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:26:43,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:26:43,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:26:43,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:26:43,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:26:43,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:26:43,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:26:43,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:26:43,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:26:43,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:26:43,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:26:43,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:26:43,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:26:43,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:26:43,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:26:43,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:26:43,128 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:26:43,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:26:43,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:26:43,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:26:43,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:26:43,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:26:43,130 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:26:43,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:26:43,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:26:43,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:26:43,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:26:43,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:26:43,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:26:43,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:26:43,131 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:26:43,131 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:26:43,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:26:43,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:26:43,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:26:43,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:26:43,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:26:43,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:26:43,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:26:43,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:26:43,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:26:43,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:26:43,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:26:43,133 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:26:43,133 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:26:43,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:26:43,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:26:43,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:26:43,139 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:26:43,139 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:26:43,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:26:43,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:26:43,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:26:43,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:26:43,370 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:26:43,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2022-01-10 18:26:43,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e092b7dc/2e340874463b4690bc73411bfc115640/FLAG33cabd7b5 [2022-01-10 18:26:43,841 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:26:43,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2022-01-10 18:26:43,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e092b7dc/2e340874463b4690bc73411bfc115640/FLAG33cabd7b5 [2022-01-10 18:26:44,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e092b7dc/2e340874463b4690bc73411bfc115640 [2022-01-10 18:26:44,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:26:44,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:26:44,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:26:44,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:26:44,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:26:44,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e30f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44, skipping insertion in model container [2022-01-10 18:26:44,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:26:44,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:26:44,423 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] [2022-01-10 18:26:44,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:26:44,602 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:26:44,610 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] [2022-01-10 18:26:44,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:26:44,697 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:26:44,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44 WrapperNode [2022-01-10 18:26:44,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:26:44,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:26:44,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:26:44,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:26:44,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,758 INFO L137 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 878 [2022-01-10 18:26:44,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:26:44,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:26:44,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:26:44,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:26:44,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:26:44,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:26:44,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:26:44,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:26:44,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44" (1/1) ... [2022-01-10 18:26:44,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:26:44,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:26:44,862 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) [2022-01-10 18:26:44,871 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 [2022-01-10 18:26:44,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:26:44,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:26:44,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:26:44,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:26:45,019 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:26:45,021 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:26:45,769 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:26:45,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:26:45,778 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-10 18:26:45,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:26:45 BoogieIcfgContainer [2022-01-10 18:26:45,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:26:45,780 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:26:45,780 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:26:45,781 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:26:45,784 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:26:45" (1/1) ... [2022-01-10 18:26:45,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:26:45 BasicIcfg [2022-01-10 18:26:45,958 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:26:45,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:26:45,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:26:45,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:26:45,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:26:44" (1/4) ... [2022-01-10 18:26:45,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404b3a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:26:45, skipping insertion in model container [2022-01-10 18:26:45,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:26:44" (2/4) ... [2022-01-10 18:26:45,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404b3a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:26:45, skipping insertion in model container [2022-01-10 18:26:45,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:26:45" (3/4) ... [2022-01-10 18:26:45,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404b3a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:26:45, skipping insertion in model container [2022-01-10 18:26:45,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:26:45" (4/4) ... [2022-01-10 18:26:45,972 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.4.cil.cTransformedIcfg [2022-01-10 18:26:45,976 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:26:45,976 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 18:26:46,029 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:26:46,034 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 [2022-01-10 18:26:46,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 18:26:46,057 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) [2022-01-10 18:26:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 18:26:46,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:46,069 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] [2022-01-10 18:26:46,070 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)] === [2022-01-10 18:26:46,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:46,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1981427744, now seen corresponding path program 1 times [2022-01-10 18:26:46,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:46,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136372945] [2022-01-10 18:26:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:46,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:46,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:46,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136372945] [2022-01-10 18:26:46,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136372945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:46,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:46,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:46,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762462179] [2022-01-10 18:26:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:46,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:46,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:46,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:46,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:46,352 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) [2022-01-10 18:26:46,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:46,721 INFO L93 Difference]: Finished difference Result 742 states and 1339 transitions. [2022-01-10 18:26:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:46,723 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 [2022-01-10 18:26:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:46,742 INFO L225 Difference]: With dead ends: 742 [2022-01-10 18:26:46,742 INFO L226 Difference]: Without dead ends: 456 [2022-01-10 18:26:46,748 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 [2022-01-10 18:26:46,751 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, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:26:46,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 787 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:26:46,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-01-10 18:26:46,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 440. [2022-01-10 18:26:46,828 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) [2022-01-10 18:26:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 694 transitions. [2022-01-10 18:26:46,831 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 694 transitions. Word has length 28 [2022-01-10 18:26:46,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:46,832 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 694 transitions. [2022-01-10 18:26:46,832 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) [2022-01-10 18:26:46,832 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 694 transitions. [2022-01-10 18:26:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 18:26:46,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:46,838 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] [2022-01-10 18:26:46,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:26:46,839 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)] === [2022-01-10 18:26:46,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:46,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1967491611, now seen corresponding path program 1 times [2022-01-10 18:26:46,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:46,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420260336] [2022-01-10 18:26:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:46,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:46,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:46,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420260336] [2022-01-10 18:26:46,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420260336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:46,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:46,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:46,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393153610] [2022-01-10 18:26:46,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:46,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:46,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:46,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:46,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:46,954 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) [2022-01-10 18:26:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:47,153 INFO L93 Difference]: Finished difference Result 1247 states and 1958 transitions. [2022-01-10 18:26:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:47,154 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 [2022-01-10 18:26:47,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:47,157 INFO L225 Difference]: With dead ends: 1247 [2022-01-10 18:26:47,157 INFO L226 Difference]: Without dead ends: 818 [2022-01-10 18:26:47,163 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 [2022-01-10 18:26:47,165 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, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:26:47,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 829 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:26:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-01-10 18:26:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 804. [2022-01-10 18:26:47,193 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) [2022-01-10 18:26:47,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1229 transitions. [2022-01-10 18:26:47,196 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1229 transitions. Word has length 39 [2022-01-10 18:26:47,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:47,196 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1229 transitions. [2022-01-10 18:26:47,196 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) [2022-01-10 18:26:47,197 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1229 transitions. [2022-01-10 18:26:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 18:26:47,198 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:47,199 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] [2022-01-10 18:26:47,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:26:47,201 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)] === [2022-01-10 18:26:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:47,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1382376993, now seen corresponding path program 1 times [2022-01-10 18:26:47,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:47,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731881425] [2022-01-10 18:26:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:47,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:47,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:47,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731881425] [2022-01-10 18:26:47,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731881425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:47,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:47,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:47,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989295763] [2022-01-10 18:26:47,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:47,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:47,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:47,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:47,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:47,272 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) [2022-01-10 18:26:47,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:47,397 INFO L93 Difference]: Finished difference Result 2121 states and 3295 transitions. [2022-01-10 18:26:47,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:47,398 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 [2022-01-10 18:26:47,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:47,403 INFO L225 Difference]: With dead ends: 2121 [2022-01-10 18:26:47,403 INFO L226 Difference]: Without dead ends: 1329 [2022-01-10 18:26:47,406 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 [2022-01-10 18:26:47,410 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 [2022-01-10 18:26:47,411 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] [2022-01-10 18:26:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-01-10 18:26:47,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1307. [2022-01-10 18:26:47,447 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) [2022-01-10 18:26:47,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2053 transitions. [2022-01-10 18:26:47,450 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2053 transitions. Word has length 39 [2022-01-10 18:26:47,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:47,450 INFO L470 AbstractCegarLoop]: Abstraction has 1307 states and 2053 transitions. [2022-01-10 18:26:47,451 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) [2022-01-10 18:26:47,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2053 transitions. [2022-01-10 18:26:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 18:26:47,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:47,454 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] [2022-01-10 18:26:47,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:26:47,454 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)] === [2022-01-10 18:26:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:47,455 INFO L85 PathProgramCache]: Analyzing trace with hash 481076696, now seen corresponding path program 1 times [2022-01-10 18:26:47,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:47,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691863307] [2022-01-10 18:26:47,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:47,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:47,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:47,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691863307] [2022-01-10 18:26:47,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691863307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:47,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:47,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:47,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544590153] [2022-01-10 18:26:47,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:47,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:47,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:47,530 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) [2022-01-10 18:26:47,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:47,604 INFO L93 Difference]: Finished difference Result 3259 states and 5123 transitions. [2022-01-10 18:26:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:47,605 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 [2022-01-10 18:26:47,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:47,612 INFO L225 Difference]: With dead ends: 3259 [2022-01-10 18:26:47,612 INFO L226 Difference]: Without dead ends: 1973 [2022-01-10 18:26:47,614 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 [2022-01-10 18:26:47,619 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 [2022-01-10 18:26:47,620 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] [2022-01-10 18:26:47,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2022-01-10 18:26:47,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1939. [2022-01-10 18:26:47,669 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) [2022-01-10 18:26:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 3043 transitions. [2022-01-10 18:26:47,677 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 3043 transitions. Word has length 40 [2022-01-10 18:26:47,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:47,677 INFO L470 AbstractCegarLoop]: Abstraction has 1939 states and 3043 transitions. [2022-01-10 18:26:47,677 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) [2022-01-10 18:26:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 3043 transitions. [2022-01-10 18:26:47,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 18:26:47,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:47,679 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] [2022-01-10 18:26:47,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:26:47,679 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)] === [2022-01-10 18:26:47,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:47,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1878614006, now seen corresponding path program 1 times [2022-01-10 18:26:47,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:47,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142838102] [2022-01-10 18:26:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:47,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:47,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:47,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142838102] [2022-01-10 18:26:47,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142838102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:47,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:47,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:47,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947863225] [2022-01-10 18:26:47,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:47,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:47,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:47,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:47,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:47,787 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) [2022-01-10 18:26:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:47,879 INFO L93 Difference]: Finished difference Result 4816 states and 7596 transitions. [2022-01-10 18:26:47,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:47,879 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 [2022-01-10 18:26:47,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:47,890 INFO L225 Difference]: With dead ends: 4816 [2022-01-10 18:26:47,890 INFO L226 Difference]: Without dead ends: 2898 [2022-01-10 18:26:47,895 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 [2022-01-10 18:26:47,895 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 [2022-01-10 18:26:47,895 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] [2022-01-10 18:26:47,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2022-01-10 18:26:47,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2732. [2022-01-10 18:26:47,984 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) [2022-01-10 18:26:47,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 4273 transitions. [2022-01-10 18:26:47,991 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 4273 transitions. Word has length 47 [2022-01-10 18:26:47,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:47,993 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 4273 transitions. [2022-01-10 18:26:47,996 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) [2022-01-10 18:26:47,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 4273 transitions. [2022-01-10 18:26:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:26:47,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:47,998 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] [2022-01-10 18:26:47,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:26:47,998 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)] === [2022-01-10 18:26:47,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:47,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1756396944, now seen corresponding path program 1 times [2022-01-10 18:26:47,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:47,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555585725] [2022-01-10 18:26:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:47,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:48,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:48,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555585725] [2022-01-10 18:26:48,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555585725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:48,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:48,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:48,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927368462] [2022-01-10 18:26:48,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:48,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:48,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:48,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:48,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:48,046 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) [2022-01-10 18:26:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:48,147 INFO L93 Difference]: Finished difference Result 5695 states and 8937 transitions. [2022-01-10 18:26:48,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:48,147 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 [2022-01-10 18:26:48,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:48,158 INFO L225 Difference]: With dead ends: 5695 [2022-01-10 18:26:48,158 INFO L226 Difference]: Without dead ends: 3033 [2022-01-10 18:26:48,161 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 [2022-01-10 18:26:48,162 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 [2022-01-10 18:26:48,162 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] [2022-01-10 18:26:48,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2022-01-10 18:26:48,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 2923. [2022-01-10 18:26:48,278 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) [2022-01-10 18:26:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4556 transitions. [2022-01-10 18:26:48,285 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4556 transitions. Word has length 52 [2022-01-10 18:26:48,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:48,285 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 4556 transitions. [2022-01-10 18:26:48,285 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) [2022-01-10 18:26:48,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4556 transitions. [2022-01-10 18:26:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:26:48,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:48,287 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] [2022-01-10 18:26:48,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:26:48,287 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)] === [2022-01-10 18:26:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1870863843, now seen corresponding path program 1 times [2022-01-10 18:26:48,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:48,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184866971] [2022-01-10 18:26:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:48,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:48,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:48,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184866971] [2022-01-10 18:26:48,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184866971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:48,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:48,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:48,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88026937] [2022-01-10 18:26:48,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:48,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:48,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:48,335 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) [2022-01-10 18:26:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:48,650 INFO L93 Difference]: Finished difference Result 7018 states and 11032 transitions. [2022-01-10 18:26:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:48,650 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 [2022-01-10 18:26:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:48,665 INFO L225 Difference]: With dead ends: 7018 [2022-01-10 18:26:48,665 INFO L226 Difference]: Without dead ends: 4165 [2022-01-10 18:26:48,670 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 [2022-01-10 18:26:48,670 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 360 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-01-10 18:26:48,671 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] [2022-01-10 18:26:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2022-01-10 18:26:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4078. [2022-01-10 18:26:48,826 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) [2022-01-10 18:26:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 6308 transitions. [2022-01-10 18:26:48,844 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 6308 transitions. Word has length 60 [2022-01-10 18:26:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:48,845 INFO L470 AbstractCegarLoop]: Abstraction has 4078 states and 6308 transitions. [2022-01-10 18:26:48,845 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) [2022-01-10 18:26:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 6308 transitions. [2022-01-10 18:26:48,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:26:48,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:48,847 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] [2022-01-10 18:26:48,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:26:48,847 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)] === [2022-01-10 18:26:48,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1834363456, now seen corresponding path program 1 times [2022-01-10 18:26:48,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:48,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110640222] [2022-01-10 18:26:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:48,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:48,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:48,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110640222] [2022-01-10 18:26:48,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110640222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:48,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:48,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:48,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870457910] [2022-01-10 18:26:48,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:48,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:48,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:48,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:48,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:48,923 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) [2022-01-10 18:26:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:49,092 INFO L93 Difference]: Finished difference Result 8086 states and 12532 transitions. [2022-01-10 18:26:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:49,092 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 [2022-01-10 18:26:49,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:49,113 INFO L225 Difference]: With dead ends: 8086 [2022-01-10 18:26:49,113 INFO L226 Difference]: Without dead ends: 4078 [2022-01-10 18:26:49,119 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 [2022-01-10 18:26:49,119 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 [2022-01-10 18:26:49,120 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] [2022-01-10 18:26:49,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2022-01-10 18:26:49,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 4078. [2022-01-10 18:26:49,288 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) [2022-01-10 18:26:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 6218 transitions. [2022-01-10 18:26:49,299 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 6218 transitions. Word has length 62 [2022-01-10 18:26:49,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:49,299 INFO L470 AbstractCegarLoop]: Abstraction has 4078 states and 6218 transitions. [2022-01-10 18:26:49,299 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) [2022-01-10 18:26:49,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 6218 transitions. [2022-01-10 18:26:49,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:26:49,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:49,301 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] [2022-01-10 18:26:49,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:26:49,301 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)] === [2022-01-10 18:26:49,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:49,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1243234201, now seen corresponding path program 1 times [2022-01-10 18:26:49,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:49,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290075870] [2022-01-10 18:26:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:49,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:49,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:49,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290075870] [2022-01-10 18:26:49,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290075870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:49,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:49,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:49,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968086852] [2022-01-10 18:26:49,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:49,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:49,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:49,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:49,361 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) [2022-01-10 18:26:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:49,702 INFO L93 Difference]: Finished difference Result 9206 states and 14086 transitions. [2022-01-10 18:26:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:49,703 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 [2022-01-10 18:26:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:49,740 INFO L225 Difference]: With dead ends: 9206 [2022-01-10 18:26:49,740 INFO L226 Difference]: Without dead ends: 5198 [2022-01-10 18:26:49,747 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 [2022-01-10 18:26:49,749 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 [2022-01-10 18:26:49,750 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] [2022-01-10 18:26:49,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2022-01-10 18:26:49,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 5118. [2022-01-10 18:26:49,955 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) [2022-01-10 18:26:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 7634 transitions. [2022-01-10 18:26:49,969 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 7634 transitions. Word has length 63 [2022-01-10 18:26:49,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:49,970 INFO L470 AbstractCegarLoop]: Abstraction has 5118 states and 7634 transitions. [2022-01-10 18:26:49,971 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) [2022-01-10 18:26:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 7634 transitions. [2022-01-10 18:26:49,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:26:49,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:49,973 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] [2022-01-10 18:26:49,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:26:49,973 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)] === [2022-01-10 18:26:49,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:49,973 INFO L85 PathProgramCache]: Analyzing trace with hash -784875757, now seen corresponding path program 1 times [2022-01-10 18:26:49,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:49,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69952493] [2022-01-10 18:26:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:49,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:50,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:50,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69952493] [2022-01-10 18:26:50,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69952493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:50,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:50,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:26:50,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716680428] [2022-01-10 18:26:50,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:50,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:26:50,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:50,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:26:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:26:50,041 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) [2022-01-10 18:26:50,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:50,904 INFO L93 Difference]: Finished difference Result 24537 states and 36580 transitions. [2022-01-10 18:26:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:26:50,905 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 [2022-01-10 18:26:50,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:50,957 INFO L225 Difference]: With dead ends: 24537 [2022-01-10 18:26:50,957 INFO L226 Difference]: Without dead ends: 19762 [2022-01-10 18:26:50,971 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 [2022-01-10 18:26:50,972 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 [2022-01-10 18:26:50,973 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] [2022-01-10 18:26:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19762 states. [2022-01-10 18:26:51,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19762 to 7058. [2022-01-10 18:26:51,441 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) [2022-01-10 18:26:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7058 states to 7058 states and 10488 transitions. [2022-01-10 18:26:51,457 INFO L78 Accepts]: Start accepts. Automaton has 7058 states and 10488 transitions. Word has length 65 [2022-01-10 18:26:51,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:51,457 INFO L470 AbstractCegarLoop]: Abstraction has 7058 states and 10488 transitions. [2022-01-10 18:26:51,457 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) [2022-01-10 18:26:51,458 INFO L276 IsEmpty]: Start isEmpty. Operand 7058 states and 10488 transitions. [2022-01-10 18:26:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:26:51,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:51,460 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] [2022-01-10 18:26:51,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:26:51,460 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)] === [2022-01-10 18:26:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1938238820, now seen corresponding path program 1 times [2022-01-10 18:26:51,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:51,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226543874] [2022-01-10 18:26:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:51,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:51,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:51,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226543874] [2022-01-10 18:26:51,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226543874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:51,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:51,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:26:51,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22287008] [2022-01-10 18:26:51,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:51,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:26:51,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:26:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:26:51,551 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) [2022-01-10 18:26:53,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:53,552 INFO L93 Difference]: Finished difference Result 32594 states and 48435 transitions. [2022-01-10 18:26:53,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 18:26:53,553 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 [2022-01-10 18:26:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:53,615 INFO L225 Difference]: With dead ends: 32594 [2022-01-10 18:26:53,615 INFO L226 Difference]: Without dead ends: 25557 [2022-01-10 18:26:53,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2022-01-10 18:26:53,632 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, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:26:53,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3904 Valid, 7598 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:26:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25557 states. [2022-01-10 18:26:54,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25557 to 4441. [2022-01-10 18:26:54,073 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) [2022-01-10 18:26:54,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4441 states to 4441 states and 6546 transitions. [2022-01-10 18:26:54,081 INFO L78 Accepts]: Start accepts. Automaton has 4441 states and 6546 transitions. Word has length 66 [2022-01-10 18:26:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:54,081 INFO L470 AbstractCegarLoop]: Abstraction has 4441 states and 6546 transitions. [2022-01-10 18:26:54,082 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) [2022-01-10 18:26:54,082 INFO L276 IsEmpty]: Start isEmpty. Operand 4441 states and 6546 transitions. [2022-01-10 18:26:54,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 18:26:54,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:54,083 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] [2022-01-10 18:26:54,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:26:54,084 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)] === [2022-01-10 18:26:54,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:54,084 INFO L85 PathProgramCache]: Analyzing trace with hash -932811973, now seen corresponding path program 1 times [2022-01-10 18:26:54,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:54,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366263331] [2022-01-10 18:26:54,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:54,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:54,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:54,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366263331] [2022-01-10 18:26:54,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366263331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:54,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:54,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:54,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790077544] [2022-01-10 18:26:54,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:54,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:54,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:54,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:54,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:54,120 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) [2022-01-10 18:26:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:54,610 INFO L93 Difference]: Finished difference Result 10874 states and 15954 transitions. [2022-01-10 18:26:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:54,611 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 [2022-01-10 18:26:54,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:54,624 INFO L225 Difference]: With dead ends: 10874 [2022-01-10 18:26:54,624 INFO L226 Difference]: Without dead ends: 6342 [2022-01-10 18:26:54,630 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 [2022-01-10 18:26:54,631 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 [2022-01-10 18:26:54,631 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] [2022-01-10 18:26:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6342 states. [2022-01-10 18:26:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6342 to 6287. [2022-01-10 18:26:55,072 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) [2022-01-10 18:26:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6287 states to 6287 states and 9162 transitions. [2022-01-10 18:26:55,084 INFO L78 Accepts]: Start accepts. Automaton has 6287 states and 9162 transitions. Word has length 90 [2022-01-10 18:26:55,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:55,084 INFO L470 AbstractCegarLoop]: Abstraction has 6287 states and 9162 transitions. [2022-01-10 18:26:55,085 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) [2022-01-10 18:26:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 6287 states and 9162 transitions. [2022-01-10 18:26:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 18:26:55,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:55,087 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] [2022-01-10 18:26:55,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:26:55,088 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)] === [2022-01-10 18:26:55,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:55,088 INFO L85 PathProgramCache]: Analyzing trace with hash 946959331, now seen corresponding path program 1 times [2022-01-10 18:26:55,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:55,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67955635] [2022-01-10 18:26:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:55,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:26:55,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:55,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67955635] [2022-01-10 18:26:55,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67955635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:55,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:55,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:55,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809924709] [2022-01-10 18:26:55,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:55,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:55,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:55,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:55,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:55,132 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) [2022-01-10 18:26:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:55,492 INFO L93 Difference]: Finished difference Result 10880 states and 15726 transitions. [2022-01-10 18:26:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:55,495 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 [2022-01-10 18:26:55,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:55,503 INFO L225 Difference]: With dead ends: 10880 [2022-01-10 18:26:55,503 INFO L226 Difference]: Without dead ends: 4522 [2022-01-10 18:26:55,510 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 [2022-01-10 18:26:55,511 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, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:26:55,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 542 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:26:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2022-01-10 18:26:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4456. [2022-01-10 18:26:55,919 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) [2022-01-10 18:26:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 6108 transitions. [2022-01-10 18:26:55,927 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 6108 transitions. Word has length 98 [2022-01-10 18:26:55,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:55,928 INFO L470 AbstractCegarLoop]: Abstraction has 4456 states and 6108 transitions. [2022-01-10 18:26:55,928 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) [2022-01-10 18:26:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 6108 transitions. [2022-01-10 18:26:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 18:26:55,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:55,929 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] [2022-01-10 18:26:55,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:26:55,930 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)] === [2022-01-10 18:26:55,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:55,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1319892603, now seen corresponding path program 1 times [2022-01-10 18:26:55,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:55,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103987083] [2022-01-10 18:26:55,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:55,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:26:55,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:55,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103987083] [2022-01-10 18:26:55,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103987083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:55,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:55,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:55,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930907585] [2022-01-10 18:26:55,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:55,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:55,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:55,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:55,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:55,990 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) [2022-01-10 18:26:56,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:56,410 INFO L93 Difference]: Finished difference Result 8739 states and 12020 transitions. [2022-01-10 18:26:56,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:56,411 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 [2022-01-10 18:26:56,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:56,417 INFO L225 Difference]: With dead ends: 8739 [2022-01-10 18:26:56,417 INFO L226 Difference]: Without dead ends: 4450 [2022-01-10 18:26:56,423 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 [2022-01-10 18:26:56,424 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 [2022-01-10 18:26:56,424 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] [2022-01-10 18:26:56,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4450 states. [2022-01-10 18:26:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4450 to 4432. [2022-01-10 18:26:56,749 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) [2022-01-10 18:26:56,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 5866 transitions. [2022-01-10 18:26:56,756 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 5866 transitions. Word has length 100 [2022-01-10 18:26:56,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:56,756 INFO L470 AbstractCegarLoop]: Abstraction has 4432 states and 5866 transitions. [2022-01-10 18:26:56,756 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) [2022-01-10 18:26:56,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 5866 transitions. [2022-01-10 18:26:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 18:26:56,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:56,757 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] [2022-01-10 18:26:56,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:26:56,758 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)] === [2022-01-10 18:26:56,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:56,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1320905497, now seen corresponding path program 1 times [2022-01-10 18:26:56,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:56,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718118480] [2022-01-10 18:26:56,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:56,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 18:26:56,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:56,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718118480] [2022-01-10 18:26:56,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718118480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:56,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:56,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:56,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704496876] [2022-01-10 18:26:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:56,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:56,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:56,806 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) [2022-01-10 18:26:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:57,076 INFO L93 Difference]: Finished difference Result 7897 states and 10484 transitions. [2022-01-10 18:26:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:57,076 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 [2022-01-10 18:26:57,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:57,080 INFO L225 Difference]: With dead ends: 7897 [2022-01-10 18:26:57,080 INFO L226 Difference]: Without dead ends: 3499 [2022-01-10 18:26:57,083 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 [2022-01-10 18:26:57,084 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 [2022-01-10 18:26:57,084 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] [2022-01-10 18:26:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2022-01-10 18:26:57,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 3195. [2022-01-10 18:26:57,334 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) [2022-01-10 18:26:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4140 transitions. [2022-01-10 18:26:57,338 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4140 transitions. Word has length 100 [2022-01-10 18:26:57,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:57,338 INFO L470 AbstractCegarLoop]: Abstraction has 3195 states and 4140 transitions. [2022-01-10 18:26:57,338 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) [2022-01-10 18:26:57,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4140 transitions. [2022-01-10 18:26:57,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 18:26:57,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:57,339 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] [2022-01-10 18:26:57,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:26:57,340 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)] === [2022-01-10 18:26:57,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:57,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2001635262, now seen corresponding path program 1 times [2022-01-10 18:26:57,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:57,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22362090] [2022-01-10 18:26:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:57,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 18:26:57,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:57,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22362090] [2022-01-10 18:26:57,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22362090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:57,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:57,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:26:57,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440842113] [2022-01-10 18:26:57,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:57,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:26:57,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:57,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:26:57,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:26:57,391 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) [2022-01-10 18:26:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:57,711 INFO L93 Difference]: Finished difference Result 3213 states and 4154 transitions. [2022-01-10 18:26:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:26:57,711 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 [2022-01-10 18:26:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:57,716 INFO L225 Difference]: With dead ends: 3213 [2022-01-10 18:26:57,716 INFO L226 Difference]: Without dead ends: 3209 [2022-01-10 18:26:57,717 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 [2022-01-10 18:26:57,717 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 [2022-01-10 18:26:57,718 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] [2022-01-10 18:26:57,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-01-10 18:26:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 3195. [2022-01-10 18:26:57,918 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) [2022-01-10 18:26:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4118 transitions. [2022-01-10 18:26:57,922 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4118 transitions. Word has length 101 [2022-01-10 18:26:57,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:26:57,922 INFO L470 AbstractCegarLoop]: Abstraction has 3195 states and 4118 transitions. [2022-01-10 18:26:57,922 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) [2022-01-10 18:26:57,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4118 transitions. [2022-01-10 18:26:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 18:26:57,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:26:57,925 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] [2022-01-10 18:26:57,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:26:57,925 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)] === [2022-01-10 18:26:57,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:26:57,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1691943372, now seen corresponding path program 1 times [2022-01-10 18:26:57,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:26:57,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888873848] [2022-01-10 18:26:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:26:57,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:26:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:26:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 18:26:58,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:26:58,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888873848] [2022-01-10 18:26:58,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888873848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:26:58,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:26:58,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:26:58,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825095003] [2022-01-10 18:26:58,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:26:58,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:26:58,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:26:58,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:26:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:26:58,019 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) [2022-01-10 18:26:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:26:59,480 INFO L93 Difference]: Finished difference Result 15410 states and 19922 transitions. [2022-01-10 18:26:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:26:59,481 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 [2022-01-10 18:26:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:26:59,495 INFO L225 Difference]: With dead ends: 15410 [2022-01-10 18:26:59,496 INFO L226 Difference]: Without dead ends: 12398 [2022-01-10 18:26:59,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:26:59,501 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 [2022-01-10 18:26:59,501 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] [2022-01-10 18:26:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12398 states. [2022-01-10 18:27:00,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12398 to 3197. [2022-01-10 18:27:00,013 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) [2022-01-10 18:27:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4112 transitions. [2022-01-10 18:27:00,019 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4112 transitions. Word has length 162 [2022-01-10 18:27:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:00,019 INFO L470 AbstractCegarLoop]: Abstraction has 3197 states and 4112 transitions. [2022-01-10 18:27:00,019 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) [2022-01-10 18:27:00,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4112 transitions. [2022-01-10 18:27:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 18:27:00,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:00,023 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] [2022-01-10 18:27:00,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:27:00,023 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)] === [2022-01-10 18:27:00,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:00,023 INFO L85 PathProgramCache]: Analyzing trace with hash 228002810, now seen corresponding path program 1 times [2022-01-10 18:27:00,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:00,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912282924] [2022-01-10 18:27:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:00,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 18:27:00,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:00,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912282924] [2022-01-10 18:27:00,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912282924] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:27:00,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290988028] [2022-01-10 18:27:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:00,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:27:00,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:27:00,244 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) [2022-01-10 18:27:00,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 18:27:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:00,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 18:27:00,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:27:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 18:27:00,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:27:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 18:27:02,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290988028] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:27:02,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:27:02,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 26 [2022-01-10 18:27:02,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46455081] [2022-01-10 18:27:02,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:27:02,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-10 18:27:02,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:02,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-10 18:27:02,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2022-01-10 18:27:02,024 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) [2022-01-10 18:27:17,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:17,406 INFO L93 Difference]: Finished difference Result 53506 states and 69496 transitions. [2022-01-10 18:27:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2022-01-10 18:27:17,406 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 [2022-01-10 18:27:17,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:17,689 INFO L225 Difference]: With dead ends: 53506 [2022-01-10 18:27:17,690 INFO L226 Difference]: Without dead ends: 50514 [2022-01-10 18:27:17,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 458 SyntacticMatches, 3 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27627 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=7245, Invalid=57017, Unknown=0, NotChecked=0, Total=64262 [2022-01-10 18:27:17,729 INFO L933 BasicCegarLoop]: 5036 mSDtfsCounter, 32596 mSDsluCounter, 49777 mSDsCounter, 0 mSdLazyCounter, 4586 mSolverCounterSat, 1053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 18:27:17,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32596 Valid, 54813 Invalid, 5639 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1053 Valid, 4586 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 18:27:17,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50514 states. [2022-01-10 18:27:18,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50514 to 4874. [2022-01-10 18:27:18,637 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) [2022-01-10 18:27:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6345 transitions. [2022-01-10 18:27:18,641 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6345 transitions. Word has length 164 [2022-01-10 18:27:18,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:18,642 INFO L470 AbstractCegarLoop]: Abstraction has 4874 states and 6345 transitions. [2022-01-10 18:27:18,642 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) [2022-01-10 18:27:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6345 transitions. [2022-01-10 18:27:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-01-10 18:27:18,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:18,645 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] [2022-01-10 18:27:18,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 18:27:18,850 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 [2022-01-10 18:27:18,851 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)] === [2022-01-10 18:27:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash 561821125, now seen corresponding path program 1 times [2022-01-10 18:27:18,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:18,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340417508] [2022-01-10 18:27:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:18,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 18:27:18,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:18,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340417508] [2022-01-10 18:27:18,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340417508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:18,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:18,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:27:18,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204529540] [2022-01-10 18:27:18,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:18,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:18,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:18,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:18,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:18,972 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) [2022-01-10 18:27:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:20,277 INFO L93 Difference]: Finished difference Result 10960 states and 14338 transitions. [2022-01-10 18:27:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:20,277 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 [2022-01-10 18:27:20,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:20,285 INFO L225 Difference]: With dead ends: 10960 [2022-01-10 18:27:20,285 INFO L226 Difference]: Without dead ends: 6291 [2022-01-10 18:27:20,290 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 [2022-01-10 18:27:20,290 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 [2022-01-10 18:27:20,291 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] [2022-01-10 18:27:20,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2022-01-10 18:27:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 6081. [2022-01-10 18:27:21,250 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) [2022-01-10 18:27:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 7752 transitions. [2022-01-10 18:27:21,255 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 7752 transitions. Word has length 263 [2022-01-10 18:27:21,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:21,256 INFO L470 AbstractCegarLoop]: Abstraction has 6081 states and 7752 transitions. [2022-01-10 18:27:21,256 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) [2022-01-10 18:27:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 7752 transitions. [2022-01-10 18:27:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-01-10 18:27:21,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:21,259 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] [2022-01-10 18:27:21,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:27:21,259 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)] === [2022-01-10 18:27:21,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:21,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1543341266, now seen corresponding path program 1 times [2022-01-10 18:27:21,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:21,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236884184] [2022-01-10 18:27:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:21,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 18:27:21,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:21,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236884184] [2022-01-10 18:27:21,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236884184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:21,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:21,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:27:21,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409059347] [2022-01-10 18:27:21,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:21,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:27:21,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:21,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:27:21,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:27:21,350 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) [2022-01-10 18:27:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:21,844 INFO L93 Difference]: Finished difference Result 7134 states and 8956 transitions. [2022-01-10 18:27:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:27:21,845 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 [2022-01-10 18:27:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:21,847 INFO L225 Difference]: With dead ends: 7134 [2022-01-10 18:27:21,847 INFO L226 Difference]: Without dead ends: 1142 [2022-01-10 18:27:21,853 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 [2022-01-10 18:27:21,854 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 [2022-01-10 18:27:21,854 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] [2022-01-10 18:27:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-01-10 18:27:22,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 934. [2022-01-10 18:27:22,008 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) [2022-01-10 18:27:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1032 transitions. [2022-01-10 18:27:22,009 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1032 transitions. Word has length 264 [2022-01-10 18:27:22,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:22,009 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 1032 transitions. [2022-01-10 18:27:22,009 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) [2022-01-10 18:27:22,009 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1032 transitions. [2022-01-10 18:27:22,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-01-10 18:27:22,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:22,013 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] [2022-01-10 18:27:22,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:27:22,013 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)] === [2022-01-10 18:27:22,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:22,015 INFO L85 PathProgramCache]: Analyzing trace with hash 726369418, now seen corresponding path program 1 times [2022-01-10 18:27:22,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:22,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613491553] [2022-01-10 18:27:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:22,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 18:27:22,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:22,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613491553] [2022-01-10 18:27:22,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613491553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:22,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:22,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:27:22,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244788146] [2022-01-10 18:27:22,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:22,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:27:22,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:22,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:27:22,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:27:22,151 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) [2022-01-10 18:27:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:22,663 INFO L93 Difference]: Finished difference Result 2234 states and 2489 transitions. [2022-01-10 18:27:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 18:27:22,667 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 [2022-01-10 18:27:22,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:22,670 INFO L225 Difference]: With dead ends: 2234 [2022-01-10 18:27:22,670 INFO L226 Difference]: Without dead ends: 2009 [2022-01-10 18:27:22,671 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 [2022-01-10 18:27:22,671 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 [2022-01-10 18:27:22,672 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] [2022-01-10 18:27:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2022-01-10 18:27:22,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1018. [2022-01-10 18:27:22,905 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) [2022-01-10 18:27:22,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1127 transitions. [2022-01-10 18:27:22,906 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1127 transitions. Word has length 265 [2022-01-10 18:27:22,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:22,906 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1127 transitions. [2022-01-10 18:27:22,906 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) [2022-01-10 18:27:22,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1127 transitions. [2022-01-10 18:27:22,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-10 18:27:22,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:22,908 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] [2022-01-10 18:27:22,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:27:22,909 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)] === [2022-01-10 18:27:22,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:22,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1960688645, now seen corresponding path program 1 times [2022-01-10 18:27:22,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:22,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853442222] [2022-01-10 18:27:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:22,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-01-10 18:27:23,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:23,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853442222] [2022-01-10 18:27:23,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853442222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:27:23,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:27:23,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:27:23,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608537933] [2022-01-10 18:27:23,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:23,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:27:23,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:23,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:27:23,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:27:23,006 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) [2022-01-10 18:27:23,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:23,363 INFO L93 Difference]: Finished difference Result 1447 states and 1611 transitions. [2022-01-10 18:27:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:27:23,364 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 [2022-01-10 18:27:23,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:23,366 INFO L225 Difference]: With dead ends: 1447 [2022-01-10 18:27:23,366 INFO L226 Difference]: Without dead ends: 1222 [2022-01-10 18:27:23,367 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 [2022-01-10 18:27:23,368 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 [2022-01-10 18:27:23,368 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] [2022-01-10 18:27:23,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-01-10 18:27:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1004. [2022-01-10 18:27:23,668 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) [2022-01-10 18:27:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1100 transitions. [2022-01-10 18:27:23,670 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1100 transitions. Word has length 266 [2022-01-10 18:27:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:23,670 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1100 transitions. [2022-01-10 18:27:23,670 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) [2022-01-10 18:27:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1100 transitions. [2022-01-10 18:27:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-01-10 18:27:23,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:23,673 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] [2022-01-10 18:27:23,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:27:23,673 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)] === [2022-01-10 18:27:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:23,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1685832810, now seen corresponding path program 1 times [2022-01-10 18:27:23,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:23,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381996413] [2022-01-10 18:27:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:23,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 147 proven. 46 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 18:27:23,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:23,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381996413] [2022-01-10 18:27:23,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381996413] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:27:23,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667534073] [2022-01-10 18:27:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:23,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:27:23,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:27:23,908 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) [2022-01-10 18:27:23,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 18:27:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:24,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 2243 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-10 18:27:24,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:27:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 147 proven. 44 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 18:27:24,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:27:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 18:27:25,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667534073] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 18:27:25,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 18:27:25,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 10] total 24 [2022-01-10 18:27:25,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475999167] [2022-01-10 18:27:25,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:25,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:27:25,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:25,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:27:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-01-10 18:27:25,770 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) [2022-01-10 18:27:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:27,271 INFO L93 Difference]: Finished difference Result 2350 states and 2575 transitions. [2022-01-10 18:27:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 18:27:27,271 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 [2022-01-10 18:27:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:27,273 INFO L225 Difference]: With dead ends: 2350 [2022-01-10 18:27:27,273 INFO L226 Difference]: Without dead ends: 2038 [2022-01-10 18:27:27,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 644 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=320, Invalid=1402, Unknown=0, NotChecked=0, Total=1722 [2022-01-10 18:27:27,275 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 [2022-01-10 18:27:27,275 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] [2022-01-10 18:27:27,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2022-01-10 18:27:27,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1100. [2022-01-10 18:27:27,492 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) [2022-01-10 18:27:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1200 transitions. [2022-01-10 18:27:27,493 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1200 transitions. Word has length 323 [2022-01-10 18:27:27,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:27,493 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1200 transitions. [2022-01-10 18:27:27,494 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) [2022-01-10 18:27:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1200 transitions. [2022-01-10 18:27:27,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-01-10 18:27:27,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:27,497 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] [2022-01-10 18:27:27,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 18:27:27,721 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 [2022-01-10 18:27:27,722 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)] === [2022-01-10 18:27:27,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1942604674, now seen corresponding path program 1 times [2022-01-10 18:27:27,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:27,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044418821] [2022-01-10 18:27:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:27,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 107 proven. 105 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 18:27:27,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:27,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044418821] [2022-01-10 18:27:27,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044418821] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:27:27,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749451562] [2022-01-10 18:27:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:27,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:27:27,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:27:27,939 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) [2022-01-10 18:27:27,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 18:27:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:28,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 2246 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 18:27:28,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:27:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 204 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 18:27:28,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:27:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 18:27:29,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749451562] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 18:27:29,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 18:27:29,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 10] total 23 [2022-01-10 18:27:29,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611727282] [2022-01-10 18:27:29,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:27:29,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:27:29,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:29,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:27:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-01-10 18:27:29,632 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) [2022-01-10 18:27:31,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:27:31,156 INFO L93 Difference]: Finished difference Result 2508 states and 2741 transitions. [2022-01-10 18:27:31,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 18:27:31,156 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 [2022-01-10 18:27:31,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:27:31,158 INFO L225 Difference]: With dead ends: 2508 [2022-01-10 18:27:31,158 INFO L226 Difference]: Without dead ends: 2196 [2022-01-10 18:27:31,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 646 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=298, Invalid=1342, Unknown=0, NotChecked=0, Total=1640 [2022-01-10 18:27:31,160 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 [2022-01-10 18:27:31,160 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] [2022-01-10 18:27:31,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2022-01-10 18:27:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1100. [2022-01-10 18:27:31,415 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) [2022-01-10 18:27:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1200 transitions. [2022-01-10 18:27:31,416 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1200 transitions. Word has length 324 [2022-01-10 18:27:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:27:31,416 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1200 transitions. [2022-01-10 18:27:31,416 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) [2022-01-10 18:27:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1200 transitions. [2022-01-10 18:27:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-01-10 18:27:31,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:27:31,419 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] [2022-01-10 18:27:31,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 18:27:31,635 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 [2022-01-10 18:27:31,636 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)] === [2022-01-10 18:27:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:27:31,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2123026580, now seen corresponding path program 1 times [2022-01-10 18:27:31,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:27:31,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536426795] [2022-01-10 18:27:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:31,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:27:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:31,862 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 303 proven. 46 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-01-10 18:27:31,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:27:31,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536426795] [2022-01-10 18:27:31,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536426795] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:27:31,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440158683] [2022-01-10 18:27:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:27:31,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:27:31,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:27:31,864 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) [2022-01-10 18:27:31,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 18:27:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:27:32,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-10 18:27:32,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 18:27:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 303 proven. 44 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-10 18:27:32,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 18:27:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 47 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-10 18:27:33,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440158683] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 18:27:33,770 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 18:27:33,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 14] total 28 [2022-01-10 18:27:33,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632895813] [2022-01-10 18:27:33,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 18:27:33,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-10 18:27:33,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:27:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-10 18:27:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-01-10 18:27:33,772 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)