/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/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:58:40,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:58:40,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:58:40,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:58:40,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:58:40,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:58:40,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:58:40,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:58:40,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:58:40,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:58:40,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:58:40,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:58:40,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:58:40,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:58:40,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:58:40,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:58:40,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:58:40,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:58:40,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:58:40,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:58:40,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:58:40,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:58:40,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:58:40,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:58:40,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:58:40,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:58:40,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:58:40,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:58:40,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:58:40,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:58:40,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:58:40,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:58:40,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:58:40,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:58:40,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:58:40,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:58:40,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:58:40,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:58:40,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:58:40,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:58:40,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:58:40,158 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 18:58:40,174 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:58:40,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:58:40,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:58:40,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:58:40,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:58:40,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:58:40,176 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:58:40,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:58:40,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:58:40,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:58:40,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:58:40,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:58:40,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:58:40,176 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:58:40,176 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:58:40,176 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:58:40,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:58:40,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:58:40,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:58:40,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:58:40,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:58:40,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:58:40,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:58:40,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:58:40,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:58:40,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:58:40,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:58:40,177 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:58:40,178 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:58:40,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:58:40,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:58:40,178 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:58:40,178 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:58:40,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:58:40,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:58:40,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:58:40,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:58:40,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:58:40,326 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:58:40,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-10 18:58:40,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ee93c3a/47a53e1b96994c45a3571b3e20737553/FLAG7d2ebdca0 [2022-01-10 18:58:40,727 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:58:40,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-10 18:58:40,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ee93c3a/47a53e1b96994c45a3571b3e20737553/FLAG7d2ebdca0 [2022-01-10 18:58:41,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ee93c3a/47a53e1b96994c45a3571b3e20737553 [2022-01-10 18:58:41,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:58:41,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:58:41,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:58:41,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:58:41,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:58:41,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41def9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41, skipping insertion in model container [2022-01-10 18:58:41,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:58:41,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:58:41,352 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7182,7195] [2022-01-10 18:58:41,361 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9513,9526] [2022-01-10 18:58:41,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:58:41,382 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:58:41,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7182,7195] [2022-01-10 18:58:41,448 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9513,9526] [2022-01-10 18:58:41,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:58:41,466 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:58:41,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41 WrapperNode [2022-01-10 18:58:41,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:58:41,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:58:41,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:58:41,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:58:41,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,519 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 456 [2022-01-10 18:58:41,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:58:41,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:58:41,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:58:41,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:58:41,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:58:41,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:58:41,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:58:41,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:58:41,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41" (1/1) ... [2022-01-10 18:58:41,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:58:41,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:58:41,574 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 18:58:41,595 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 18:58:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:58:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:58:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:58:41,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:58:41,684 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:58:41,685 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:58:42,031 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:58:42,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:58:42,036 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:58:42,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:58:42 BoogieIcfgContainer [2022-01-10 18:58:42,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:58:42,044 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:58:42,044 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:58:42,045 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:58:42,047 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:58:42" (1/1) ... [2022-01-10 18:58:42,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:58:42 BasicIcfg [2022-01-10 18:58:42,293 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:58:42,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:58:42,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:58:42,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:58:42,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:58:41" (1/4) ... [2022-01-10 18:58:42,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81232d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:58:42, skipping insertion in model container [2022-01-10 18:58:42,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:58:41" (2/4) ... [2022-01-10 18:58:42,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81232d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:58:42, skipping insertion in model container [2022-01-10 18:58:42,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:58:42" (3/4) ... [2022-01-10 18:58:42,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81232d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:58:42, skipping insertion in model container [2022-01-10 18:58:42,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:58:42" (4/4) ... [2022-01-10 18:58:42,299 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 18:58:42,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:58:42,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 18:58:42,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:58:42,349 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 18:58:42,349 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 18:58:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 103 states have (on average 1.7572815533980584) internal successors, (181), 105 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:58:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 18:58:42,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:58:42,369 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] [2022-01-10 18:58:42,370 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:58:42,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:58:42,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1186396954, now seen corresponding path program 1 times [2022-01-10 18:58:42,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:58:42,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930817379] [2022-01-10 18:58:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:58:42,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:58:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:58:42,840 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 18:58:42,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:58:42,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930817379] [2022-01-10 18:58:42,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930817379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:58:42,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:58:42,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:58:42,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114210629] [2022-01-10 18:58:42,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:58:42,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:58:42,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:58:42,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:58:42,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:58:42,871 INFO L87 Difference]: Start difference. First operand has 106 states, 103 states have (on average 1.7572815533980584) internal successors, (181), 105 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 18:58:43,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:58:43,241 INFO L93 Difference]: Finished difference Result 204 states and 332 transitions. [2022-01-10 18:58:43,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:58:43,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 18:58:43,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:58:43,250 INFO L225 Difference]: With dead ends: 204 [2022-01-10 18:58:43,250 INFO L226 Difference]: Without dead ends: 153 [2022-01-10 18:58:43,258 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 18:58:43,261 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 95 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:58:43,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 351 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:58:43,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-01-10 18:58:43,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2022-01-10 18:58:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 149 states have (on average 1.4228187919463087) internal successors, (212), 150 states have internal predecessors, (212), 0 states have call successors, (0), 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 18:58:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 212 transitions. [2022-01-10 18:58:43,327 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 212 transitions. Word has length 48 [2022-01-10 18:58:43,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:58:43,328 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 212 transitions. [2022-01-10 18:58:43,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 18:58:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 212 transitions. [2022-01-10 18:58:43,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 18:58:43,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:58:43,330 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] [2022-01-10 18:58:43,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:58:43,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:58:43,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:58:43,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1877353874, now seen corresponding path program 1 times [2022-01-10 18:58:43,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:58:43,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037194160] [2022-01-10 18:58:43,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:58:43,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:58:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:58:43,489 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 18:58:43,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:58:43,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037194160] [2022-01-10 18:58:43,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037194160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:58:43,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:58:43,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:58:43,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317519073] [2022-01-10 18:58:43,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:58:43,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:58:43,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:58:43,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:58:43,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:58:43,495 INFO L87 Difference]: Start difference. First operand 151 states and 212 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 18:58:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:58:43,640 INFO L93 Difference]: Finished difference Result 276 states and 401 transitions. [2022-01-10 18:58:43,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:58:43,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 18:58:43,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:58:43,644 INFO L225 Difference]: With dead ends: 276 [2022-01-10 18:58:43,644 INFO L226 Difference]: Without dead ends: 195 [2022-01-10 18:58:43,645 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 18:58:43,645 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:58:43,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 301 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:58:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-01-10 18:58:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2022-01-10 18:58:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 191 states have (on average 1.4397905759162304) internal successors, (275), 192 states have internal predecessors, (275), 0 states have call successors, (0), 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 18:58:43,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 275 transitions. [2022-01-10 18:58:43,670 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 275 transitions. Word has length 49 [2022-01-10 18:58:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:58:43,670 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 275 transitions. [2022-01-10 18:58:43,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 18:58:43,671 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 275 transitions. [2022-01-10 18:58:43,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 18:58:43,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:58:43,677 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] [2022-01-10 18:58:43,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:58:43,680 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:58:43,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:58:43,681 INFO L85 PathProgramCache]: Analyzing trace with hash 728594009, now seen corresponding path program 1 times [2022-01-10 18:58:43,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:58:43,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799916345] [2022-01-10 18:58:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:58:43,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:58:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:58:44,026 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 18:58:44,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:58:44,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799916345] [2022-01-10 18:58:44,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799916345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:58:44,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:58:44,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:58:44,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793725970] [2022-01-10 18:58:44,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:58:44,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:58:44,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:58:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:58:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:58:44,028 INFO L87 Difference]: Start difference. First operand 193 states and 275 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 18:58:46,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:58:48,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:58:51,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:58:53,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:58:56,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:58:59,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:01,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:03,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:59:03,933 INFO L93 Difference]: Finished difference Result 1412 states and 2100 transitions. [2022-01-10 18:59:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:59:03,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-01-10 18:59:03,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:59:03,941 INFO L225 Difference]: With dead ends: 1412 [2022-01-10 18:59:03,941 INFO L226 Difference]: Without dead ends: 1246 [2022-01-10 18:59:03,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-01-10 18:59:03,942 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 583 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 16 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:59:03,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 1261 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 564 Invalid, 8 Unknown, 0 Unchecked, 19.3s Time] [2022-01-10 18:59:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-01-10 18:59:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 539. [2022-01-10 18:59:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 537 states have (on average 1.4785847299813781) internal successors, (794), 538 states have internal predecessors, (794), 0 states have call successors, (0), 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 18:59:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 794 transitions. [2022-01-10 18:59:04,111 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 794 transitions. Word has length 50 [2022-01-10 18:59:04,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:59:04,112 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 794 transitions. [2022-01-10 18:59:04,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 18:59:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 794 transitions. [2022-01-10 18:59:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 18:59:04,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:59:04,118 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] [2022-01-10 18:59:04,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:59:04,118 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:59:04,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:59:04,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1028201207, now seen corresponding path program 1 times [2022-01-10 18:59:04,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:59:04,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105033303] [2022-01-10 18:59:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:59:04,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:59:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:59:04,438 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 18:59:04,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:59:04,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105033303] [2022-01-10 18:59:04,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105033303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:59:04,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:59:04,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:59:04,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941399200] [2022-01-10 18:59:04,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:59:04,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:59:04,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:59:04,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:59:04,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:59:04,440 INFO L87 Difference]: Start difference. First operand 539 states and 794 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 18:59:06,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:09,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:12,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:59:15,165 INFO L93 Difference]: Finished difference Result 4069 states and 6088 transitions. [2022-01-10 18:59:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:59:15,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 18:59:15,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:59:15,177 INFO L225 Difference]: With dead ends: 4069 [2022-01-10 18:59:15,177 INFO L226 Difference]: Without dead ends: 3564 [2022-01-10 18:59:15,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-10 18:59:15,184 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 667 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:59:15,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 975 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 530 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2022-01-10 18:59:15,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2022-01-10 18:59:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 1900. [2022-01-10 18:59:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1898 states have (on average 1.482086406743941) internal successors, (2813), 1899 states have internal predecessors, (2813), 0 states have call successors, (0), 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 18:59:15,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2813 transitions. [2022-01-10 18:59:15,935 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2813 transitions. Word has length 51 [2022-01-10 18:59:15,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:59:15,935 INFO L470 AbstractCegarLoop]: Abstraction has 1900 states and 2813 transitions. [2022-01-10 18:59:15,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 18:59:15,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2813 transitions. [2022-01-10 18:59:15,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 18:59:15,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:59:15,936 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] [2022-01-10 18:59:15,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:59:15,937 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:59:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:59:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash 852479048, now seen corresponding path program 1 times [2022-01-10 18:59:15,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:59:15,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527686009] [2022-01-10 18:59:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:59:15,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:59:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:59:16,218 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 18:59:16,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:59:16,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527686009] [2022-01-10 18:59:16,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527686009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:59:16,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:59:16,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:59:16,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499014928] [2022-01-10 18:59:16,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:59:16,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:59:16,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:59:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:59:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:59:16,220 INFO L87 Difference]: Start difference. First operand 1900 states and 2813 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 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 18:59:19,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:23,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:25,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:59:29,462 INFO L93 Difference]: Finished difference Result 10704 states and 16057 transitions. [2022-01-10 18:59:29,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:59:29,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 18:59:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:59:29,490 INFO L225 Difference]: With dead ends: 10704 [2022-01-10 18:59:29,490 INFO L226 Difference]: Without dead ends: 8927 [2022-01-10 18:59:29,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 18:59:29,493 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 692 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:59:29,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 1125 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 639 Invalid, 3 Unknown, 0 Unchecked, 9.0s Time] [2022-01-10 18:59:29,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8927 states. [2022-01-10 18:59:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8927 to 2935. [2022-01-10 18:59:30,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2935 states, 2933 states have (on average 1.4988066825775657) internal successors, (4396), 2934 states have internal predecessors, (4396), 0 states have call successors, (0), 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 18:59:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2935 states to 2935 states and 4396 transitions. [2022-01-10 18:59:30,851 INFO L78 Accepts]: Start accepts. Automaton has 2935 states and 4396 transitions. Word has length 51 [2022-01-10 18:59:30,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:59:30,852 INFO L470 AbstractCegarLoop]: Abstraction has 2935 states and 4396 transitions. [2022-01-10 18:59:30,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 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 18:59:30,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2935 states and 4396 transitions. [2022-01-10 18:59:30,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:59:30,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:59:30,853 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 18:59:30,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:59:30,853 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:59:30,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:59:30,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2068565096, now seen corresponding path program 1 times [2022-01-10 18:59:30,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:59:30,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942053241] [2022-01-10 18:59:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:59:30,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:59:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:59:31,099 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 18:59:31,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:59:31,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942053241] [2022-01-10 18:59:31,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942053241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:59:31,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:59:31,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:59:31,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446209570] [2022-01-10 18:59:31,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:59:31,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:59:31,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:59:31,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:59:31,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:59:31,101 INFO L87 Difference]: Start difference. First operand 2935 states and 4396 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 18:59:31,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:59:31,862 INFO L93 Difference]: Finished difference Result 3821 states and 5710 transitions. [2022-01-10 18:59:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:59:31,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 18:59:31,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:59:31,865 INFO L225 Difference]: With dead ends: 3821 [2022-01-10 18:59:31,865 INFO L226 Difference]: Without dead ends: 990 [2022-01-10 18:59:31,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:59:31,867 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 496 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:59:31,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 142 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:59:31,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-01-10 18:59:32,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 981. [2022-01-10 18:59:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 979 states have (on average 1.4719101123595506) internal successors, (1441), 980 states have internal predecessors, (1441), 0 states have call successors, (0), 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 18:59:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1441 transitions. [2022-01-10 18:59:32,326 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1441 transitions. Word has length 52 [2022-01-10 18:59:32,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:59:32,327 INFO L470 AbstractCegarLoop]: Abstraction has 981 states and 1441 transitions. [2022-01-10 18:59:32,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 18:59:32,327 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1441 transitions. [2022-01-10 18:59:32,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:59:32,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:59:32,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:59:32,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:59:32,328 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:59:32,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:59:32,328 INFO L85 PathProgramCache]: Analyzing trace with hash 273394873, now seen corresponding path program 1 times [2022-01-10 18:59:32,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:59:32,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377289610] [2022-01-10 18:59:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:59:32,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:59:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:59:32,608 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 18:59:32,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:59:32,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377289610] [2022-01-10 18:59:32,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377289610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:59:32,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:59:32,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:59:32,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519901774] [2022-01-10 18:59:32,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:59:32,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:59:32,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:59:32,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:59:32,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:59:32,609 INFO L87 Difference]: Start difference. First operand 981 states and 1441 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 18:59:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:59:33,426 INFO L93 Difference]: Finished difference Result 2166 states and 3208 transitions. [2022-01-10 18:59:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:59:33,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 18:59:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:59:33,430 INFO L225 Difference]: With dead ends: 2166 [2022-01-10 18:59:33,430 INFO L226 Difference]: Without dead ends: 1215 [2022-01-10 18:59:33,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:59:33,431 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 521 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:59:33,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 138 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:59:33,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-01-10 18:59:33,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 569. [2022-01-10 18:59:33,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 567 states have (on average 1.4620811287477955) internal successors, (829), 568 states have internal predecessors, (829), 0 states have call successors, (0), 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 18:59:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 829 transitions. [2022-01-10 18:59:33,717 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 829 transitions. Word has length 52 [2022-01-10 18:59:33,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:59:33,718 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 829 transitions. [2022-01-10 18:59:33,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 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 18:59:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 829 transitions. [2022-01-10 18:59:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:59:33,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:59:33,719 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 18:59:33,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:59:33,719 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:59:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:59:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1555059366, now seen corresponding path program 1 times [2022-01-10 18:59:33,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:59:33,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451922751] [2022-01-10 18:59:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:59:33,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:59:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:59:33,953 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 18:59:33,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:59:33,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451922751] [2022-01-10 18:59:33,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451922751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:59:33,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:59:33,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:59:33,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975326024] [2022-01-10 18:59:33,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:59:33,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:59:33,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:59:33,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:59:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:59:33,955 INFO L87 Difference]: Start difference. First operand 569 states and 829 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 18:59:36,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:38,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:41,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:59:41,223 INFO L93 Difference]: Finished difference Result 3809 states and 5596 transitions. [2022-01-10 18:59:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:59:41,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 18:59:41,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:59:41,232 INFO L225 Difference]: With dead ends: 3809 [2022-01-10 18:59:41,232 INFO L226 Difference]: Without dead ends: 3313 [2022-01-10 18:59:41,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:59:41,240 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 837 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:59:41,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 467 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 302 Invalid, 2 Unknown, 0 Unchecked, 5.1s Time] [2022-01-10 18:59:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2022-01-10 18:59:42,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 2064. [2022-01-10 18:59:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2062 states have (on average 1.4626576139670222) internal successors, (3016), 2063 states have internal predecessors, (3016), 0 states have call successors, (0), 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 18:59:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 3016 transitions. [2022-01-10 18:59:42,423 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 3016 transitions. Word has length 52 [2022-01-10 18:59:42,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:59:42,423 INFO L470 AbstractCegarLoop]: Abstraction has 2064 states and 3016 transitions. [2022-01-10 18:59:42,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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 18:59:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 3016 transitions. [2022-01-10 18:59:42,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:59:42,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:59:42,424 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 18:59:42,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:59:42,424 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:59:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:59:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2113128548, now seen corresponding path program 1 times [2022-01-10 18:59:42,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:59:42,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48328900] [2022-01-10 18:59:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:59:42,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:59:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:59:42,739 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 18:59:42,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:59:42,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48328900] [2022-01-10 18:59:42,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48328900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:59:42,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:59:42,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:59:42,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491187689] [2022-01-10 18:59:42,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:59:42,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:59:42,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:59:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:59:42,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:59:42,741 INFO L87 Difference]: Start difference. First operand 2064 states and 3016 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 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 18:59:45,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:48,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:50,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:59:52,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []