/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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:52:49,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:52:49,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:52:49,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:52:49,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:52:49,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:52:49,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:52:49,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:52:49,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:52:49,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:52:49,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:52:49,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:52:49,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:52:49,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:52:49,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:52:49,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:52:49,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:52:49,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:52:49,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:52:49,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:52:49,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:52:49,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:52:49,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:52:49,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:52:49,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:52:49,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:52:49,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:52:49,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:52:49,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:52:49,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:52:49,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:52:49,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:52:49,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:52:49,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:52:49,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:52:49,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:52:49,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:52:49,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:52:49,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:52:49,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:52:49,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:52:49,110 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 18:52:49,136 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:52:49,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:52:49,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:52:49,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:52:49,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:52:49,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:52:49,137 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:52:49,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:52:49,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:52:49,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:52:49,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:52:49,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:52:49,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:52:49,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:52:49,138 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:52:49,138 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:52:49,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:52:49,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:52:49,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:52:49,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:52:49,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:52:49,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:52:49,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:52:49,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:52:49,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:52:49,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:52:49,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:52:49,142 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:52:49,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:52:49,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:52:49,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:52:49,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:52:49,144 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:52:49,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:52:49,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:52:49,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:52:49,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:52:49,321 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:52:49,321 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:52:49,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 18:52:49,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02f72c52/5b8ccc9b3d7446c0adb956e70036ac28/FLAGe2ea8cecd [2022-01-10 18:52:49,865 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:52:49,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-01-10 18:52:49,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02f72c52/5b8ccc9b3d7446c0adb956e70036ac28/FLAGe2ea8cecd [2022-01-10 18:52:50,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02f72c52/5b8ccc9b3d7446c0adb956e70036ac28 [2022-01-10 18:52:50,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:52:50,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:52:50,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:52:50,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:52:50,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:52:50,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:50,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@573b851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50, skipping insertion in model container [2022-01-10 18:52:50,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:50,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:52:50,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:52:50,615 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8635,8648] [2022-01-10 18:52:50,638 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15820,15833] [2022-01-10 18:52:50,646 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18017,18030] [2022-01-10 18:52:50,650 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19041,19054] [2022-01-10 18:52:50,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:52:50,770 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:52:50,826 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8635,8648] [2022-01-10 18:52:50,860 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15820,15833] [2022-01-10 18:52:50,874 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18017,18030] [2022-01-10 18:52:50,883 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-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19041,19054] [2022-01-10 18:52:50,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:52:50,990 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:52:50,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50 WrapperNode [2022-01-10 18:52:50,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:52:50,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:52:50,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:52:50,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:52:50,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:51,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:51,057 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2579 [2022-01-10 18:52:51,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:52:51,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:52:51,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:52:51,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:52:51,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:51,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:51,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:51,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:51,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:51,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:51,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:51,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:52:51,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:52:51,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:52:51,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:52:51,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50" (1/1) ... [2022-01-10 18:52:51,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:52:51,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:52:51,147 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 18:52:51,168 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 18:52:51,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:52:51,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:52:51,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:52:51,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:52:51,290 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:52:51,291 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:52:52,423 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:52:52,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:52:52,430 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:52:52,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:52 BoogieIcfgContainer [2022-01-10 18:52:52,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:52:52,433 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:52:52,433 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:52:52,434 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:52:52,435 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:52" (1/1) ... [2022-01-10 18:52:53,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:52:53 BasicIcfg [2022-01-10 18:52:53,275 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:52:53,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:52:53,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:52:53,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:52:53,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:52:50" (1/4) ... [2022-01-10 18:52:53,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7954f931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:53, skipping insertion in model container [2022-01-10 18:52:53,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:50" (2/4) ... [2022-01-10 18:52:53,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7954f931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:53, skipping insertion in model container [2022-01-10 18:52:53,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:52" (3/4) ... [2022-01-10 18:52:53,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7954f931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:52:53, skipping insertion in model container [2022-01-10 18:52:53,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:52:53" (4/4) ... [2022-01-10 18:52:53,282 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.cTransformedIcfg [2022-01-10 18:52:53,287 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:52:53,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 18:52:53,330 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:52:53,336 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 18:52:53,336 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 18:52:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 0 states have call successors, (0), 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 18:52:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 18:52:53,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:53,375 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 18:52:53,376 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:52:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash -135964807, now seen corresponding path program 1 times [2022-01-10 18:52:53,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:53,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36851993] [2022-01-10 18:52:53,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:53,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:54,075 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 18:52:54,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:54,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36851993] [2022-01-10 18:52:54,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36851993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:54,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:54,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:52:54,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870000281] [2022-01-10 18:52:54,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:54,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:52:54,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:52:54,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:52:54,106 INFO L87 Difference]: Start difference. First operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 0 states have call successors, (0), 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 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 18:52:57,255 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 18:53:00,090 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 18:53:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:53:00,616 INFO L93 Difference]: Finished difference Result 956 states and 1694 transitions. [2022-01-10 18:53:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:53:00,619 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 18:53:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:53:00,628 INFO L225 Difference]: With dead ends: 956 [2022-01-10 18:53:00,629 INFO L226 Difference]: Without dead ends: 557 [2022-01-10 18:53:00,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:53:00,633 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 1841 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:53:00,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1841 Valid, 2227 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 620 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-01-10 18:53:00,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-01-10 18:53:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 492. [2022-01-10 18:53:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 488 states have (on average 1.3401639344262295) internal successors, (654), 491 states have internal predecessors, (654), 0 states have call successors, (0), 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 18:53:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 654 transitions. [2022-01-10 18:53:00,696 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 654 transitions. Word has length 51 [2022-01-10 18:53:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:53:00,696 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 654 transitions. [2022-01-10 18:53:00,696 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 18:53:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 654 transitions. [2022-01-10 18:53:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 18:53:00,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:53:00,698 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 18:53:00,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:53:00,698 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:53:00,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:53:00,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1474857982, now seen corresponding path program 1 times [2022-01-10 18:53:00,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:53:00,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270250519] [2022-01-10 18:53:00,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:53:00,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:53:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:53:00,841 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 18:53:00,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:53:00,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270250519] [2022-01-10 18:53:00,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270250519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:53:00,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:53:00,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:53:00,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840233814] [2022-01-10 18:53:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:53:00,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:53:00,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:53:00,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:53:00,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:53:00,843 INFO L87 Difference]: Start difference. First operand 492 states and 654 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 18:53:00,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:53:00,912 INFO L93 Difference]: Finished difference Result 863 states and 1205 transitions. [2022-01-10 18:53:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:53:00,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 18:53:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:53:00,915 INFO L225 Difference]: With dead ends: 863 [2022-01-10 18:53:00,915 INFO L226 Difference]: Without dead ends: 658 [2022-01-10 18:53:00,916 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 18:53:00,917 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 321 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:53:00,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 964 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:53:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-01-10 18:53:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 652. [2022-01-10 18:53:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 648 states have (on average 1.376543209876543) internal successors, (892), 651 states have internal predecessors, (892), 0 states have call successors, (0), 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 18:53:00,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 892 transitions. [2022-01-10 18:53:00,996 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 892 transitions. Word has length 51 [2022-01-10 18:53:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:53:00,996 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 892 transitions. [2022-01-10 18:53:00,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 18:53:00,997 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 892 transitions. [2022-01-10 18:53:00,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 18:53:00,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:53:00,998 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] [2022-01-10 18:53:00,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:53:00,998 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:53:00,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:53:00,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1709295804, now seen corresponding path program 1 times [2022-01-10 18:53:00,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:53:00,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173176651] [2022-01-10 18:53:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:53:00,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:53:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:53:01,343 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 18:53:01,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:53:01,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173176651] [2022-01-10 18:53:01,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173176651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:53:01,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:53:01,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:53:01,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893206429] [2022-01-10 18:53:01,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:53:01,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:53:01,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:53:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:53:01,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:53:01,345 INFO L87 Difference]: Start difference. First operand 652 states and 892 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 18:53:04,405 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 18:53:06,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:09,583 WARN L534 Checker$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 18:53:11,733 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 18:53:12,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:53:12,226 INFO L93 Difference]: Finished difference Result 1159 states and 1640 transitions. [2022-01-10 18:53:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:53:12,255 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 18:53:12,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:53:12,258 INFO L225 Difference]: With dead ends: 1159 [2022-01-10 18:53:12,258 INFO L226 Difference]: Without dead ends: 758 [2022-01-10 18:53:12,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:53:12,262 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 855 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:53:12,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 1888 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 740 Invalid, 4 Unknown, 0 Unchecked, 10.5s Time] [2022-01-10 18:53:12,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-01-10 18:53:12,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 643. [2022-01-10 18:53:12,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 639 states have (on average 1.3724569640062598) internal successors, (877), 642 states have internal predecessors, (877), 0 states have call successors, (0), 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 18:53:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 877 transitions. [2022-01-10 18:53:12,325 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 877 transitions. Word has length 51 [2022-01-10 18:53:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:53:12,325 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 877 transitions. [2022-01-10 18:53:12,325 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 18:53:12,325 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 877 transitions. [2022-01-10 18:53:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 18:53:12,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:53:12,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:53:12,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:53:12,328 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:53:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:53:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash -527314266, now seen corresponding path program 1 times [2022-01-10 18:53:12,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:53:12,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256460308] [2022-01-10 18:53:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:53:12,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:53:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:53:12,480 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 18:53:12,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:53:12,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256460308] [2022-01-10 18:53:12,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256460308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:53:12,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:53:12,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:53:12,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252597965] [2022-01-10 18:53:12,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:53:12,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:53:12,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:53:12,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:53:12,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:53:12,487 INFO L87 Difference]: Start difference. First operand 643 states and 877 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 18:53:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:53:12,624 INFO L93 Difference]: Finished difference Result 1268 states and 1802 transitions. [2022-01-10 18:53:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:53:12,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 18:53:12,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:53:12,628 INFO L225 Difference]: With dead ends: 1268 [2022-01-10 18:53:12,628 INFO L226 Difference]: Without dead ends: 946 [2022-01-10 18:53:12,629 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 18:53:12,631 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 299 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:53:12,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 944 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:53:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-01-10 18:53:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 939. [2022-01-10 18:53:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 935 states have (on average 1.397860962566845) internal successors, (1307), 938 states have internal predecessors, (1307), 0 states have call successors, (0), 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 18:53:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1307 transitions. [2022-01-10 18:53:12,710 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1307 transitions. Word has length 51 [2022-01-10 18:53:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:53:12,711 INFO L470 AbstractCegarLoop]: Abstraction has 939 states and 1307 transitions. [2022-01-10 18:53:12,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 18:53:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1307 transitions. [2022-01-10 18:53:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:53:12,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:53:12,713 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 18:53:12,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:53:12,713 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:53:12,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:53:12,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1314035505, now seen corresponding path program 1 times [2022-01-10 18:53:12,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:53:12,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539604121] [2022-01-10 18:53:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:53:12,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:53:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:53:13,081 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 18:53:13,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:53:13,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539604121] [2022-01-10 18:53:13,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539604121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:53:13,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:53:13,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:53:13,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077086906] [2022-01-10 18:53:13,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:53:13,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:53:13,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:53:13,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:53:13,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:53:13,082 INFO L87 Difference]: Start difference. First operand 939 states and 1307 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 18:53:15,741 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 18:53:17,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:20,579 WARN L534 Checker$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 18:53:22,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:25,175 WARN L534 Checker$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 18:53:28,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:30,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:32,503 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 18:53:32,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:53:32,924 INFO L93 Difference]: Finished difference Result 3633 states and 5226 transitions. [2022-01-10 18:53:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:53:32,925 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 18:53:32,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:53:32,936 INFO L225 Difference]: With dead ends: 3633 [2022-01-10 18:53:32,936 INFO L226 Difference]: Without dead ends: 3076 [2022-01-10 18:53:32,936 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 18:53:32,937 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1806 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 29 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:53:32,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1806 Valid, 1506 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 678 Invalid, 8 Unknown, 0 Unchecked, 19.2s Time] [2022-01-10 18:53:32,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2022-01-10 18:53:33,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 1843. [2022-01-10 18:53:33,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1839 states have (on average 1.395867319195215) internal successors, (2567), 1842 states have internal predecessors, (2567), 0 states have call successors, (0), 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 18:53:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2567 transitions. [2022-01-10 18:53:33,188 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2567 transitions. Word has length 52 [2022-01-10 18:53:33,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:53:33,188 INFO L470 AbstractCegarLoop]: Abstraction has 1843 states and 2567 transitions. [2022-01-10 18:53:33,188 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 18:53:33,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2567 transitions. [2022-01-10 18:53:33,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:53:33,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:53:33,190 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 18:53:33,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:53:33,190 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:53:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:53:33,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1082196164, now seen corresponding path program 1 times [2022-01-10 18:53:33,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:53:33,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683503912] [2022-01-10 18:53:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:53:33,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:53:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:53:33,274 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 18:53:33,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:53:33,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683503912] [2022-01-10 18:53:33,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683503912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:53:33,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:53:33,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:53:33,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874292568] [2022-01-10 18:53:33,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:53:33,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:53:33,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:53:33,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:53:33,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:53:33,275 INFO L87 Difference]: Start difference. First operand 1843 states and 2567 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 18:53:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:53:33,701 INFO L93 Difference]: Finished difference Result 4025 states and 5729 transitions. [2022-01-10 18:53:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:53:33,701 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 18:53:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:53:33,708 INFO L225 Difference]: With dead ends: 4025 [2022-01-10 18:53:33,708 INFO L226 Difference]: Without dead ends: 2838 [2022-01-10 18:53:33,710 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 18:53:33,710 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 249 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:53:33,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 1076 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:53:33,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2022-01-10 18:53:34,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2664. [2022-01-10 18:53:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2664 states, 2660 states have (on average 1.3951127819548872) internal successors, (3711), 2663 states have internal predecessors, (3711), 0 states have call successors, (0), 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 18:53:34,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3711 transitions. [2022-01-10 18:53:34,063 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3711 transitions. Word has length 52 [2022-01-10 18:53:34,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:53:34,064 INFO L470 AbstractCegarLoop]: Abstraction has 2664 states and 3711 transitions. [2022-01-10 18:53:34,064 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 18:53:34,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3711 transitions. [2022-01-10 18:53:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:53:34,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:53:34,065 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 18:53:34,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:53:34,066 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:53:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:53:34,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1188054078, now seen corresponding path program 1 times [2022-01-10 18:53:34,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:53:34,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644310297] [2022-01-10 18:53:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:53:34,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:53:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:53:34,339 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 18:53:34,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:53:34,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644310297] [2022-01-10 18:53:34,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644310297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:53:34,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:53:34,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:53:34,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099987185] [2022-01-10 18:53:34,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:53:34,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:53:34,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:53:34,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:53:34,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:53:34,340 INFO L87 Difference]: Start difference. First operand 2664 states and 3711 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 18:53:37,253 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 18:53:39,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:42,139 WARN L534 Checker$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 18:53:44,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:49,260 WARN L534 Checker$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 18:53:52,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:55,115 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:57,253 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 18:53:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:53:58,931 INFO L93 Difference]: Finished difference Result 14934 states and 21547 transitions. [2022-01-10 18:53:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 18:53:58,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 18:53:58,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:53:58,970 INFO L225 Difference]: With dead ends: 14934 [2022-01-10 18:53:58,970 INFO L226 Difference]: Without dead ends: 12761 [2022-01-10 18:53:58,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-10 18:53:58,976 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 2122 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 32 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2122 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:53:58,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2122 Valid, 1602 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 812 Invalid, 8 Unknown, 0 Unchecked, 20.3s Time] [2022-01-10 18:53:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12761 states. [2022-01-10 18:54:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12761 to 7747. [2022-01-10 18:54:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7747 states, 7743 states have (on average 1.4307116104868913) internal successors, (11078), 7746 states have internal predecessors, (11078), 0 states have call successors, (0), 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 18:54:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7747 states to 7747 states and 11078 transitions. [2022-01-10 18:54:01,167 INFO L78 Accepts]: Start accepts. Automaton has 7747 states and 11078 transitions. Word has length 52 [2022-01-10 18:54:01,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:54:01,168 INFO L470 AbstractCegarLoop]: Abstraction has 7747 states and 11078 transitions. [2022-01-10 18:54:01,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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 18:54:01,168 INFO L276 IsEmpty]: Start isEmpty. Operand 7747 states and 11078 transitions. [2022-01-10 18:54:01,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 18:54:01,170 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:54:01,170 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] [2022-01-10 18:54:01,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:54:01,171 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 18:54:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:54:01,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1376748517, now seen corresponding path program 1 times [2022-01-10 18:54:01,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:54:01,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647687891] [2022-01-10 18:54:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:54:01,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:54:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:54:01,377 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 18:54:01,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:54:01,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647687891] [2022-01-10 18:54:01,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647687891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:54:01,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:54:01,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:54:01,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655163427] [2022-01-10 18:54:01,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:54:01,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:54:01,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:54:01,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:54:01,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:54:01,378 INFO L87 Difference]: Start difference. First operand 7747 states and 11078 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)