/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.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:55:46,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:55:46,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:55:47,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:55:47,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:55:47,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:55:47,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:55:47,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:55:47,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:55:47,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:55:47,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:55:47,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:55:47,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:55:47,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:55:47,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:55:47,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:55:47,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:55:47,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:55:47,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:55:47,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:55:47,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:55:47,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:55:47,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:55:47,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:55:47,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:55:47,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:55:47,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:55:47,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:55:47,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:55:47,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:55:47,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:55:47,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:55:47,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:55:47,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:55:47,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:55:47,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:55:47,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:55:47,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:55:47,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:55:47,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:55:47,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:55:47,069 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 18:55:47,089 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:55:47,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:55:47,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:55:47,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:55:47,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:55:47,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:55:47,091 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:55:47,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:55:47,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:55:47,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:55:47,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:55:47,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:55:47,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:55:47,092 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:55:47,092 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:55:47,092 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:55:47,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:55:47,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:55:47,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:55:47,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:55:47,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:55:47,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:55:47,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:55:47,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:55:47,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:55:47,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:55:47,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:55:47,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:55:47,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:55:47,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:55:47,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:55:47,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:55:47,095 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:55:47,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:55:47,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:55:47,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:55:47,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:55:47,277 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:55:47,277 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:55:47,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-10 18:55:47,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ee7d229/f655505e18f8432f86717a4b3b002c60/FLAGc1cf010cd [2022-01-10 18:55:47,760 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:55:47,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-10 18:55:47,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ee7d229/f655505e18f8432f86717a4b3b002c60/FLAGc1cf010cd [2022-01-10 18:55:47,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ee7d229/f655505e18f8432f86717a4b3b002c60 [2022-01-10 18:55:47,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:55:47,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:55:47,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:55:47,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:55:47,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:55:47,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:47" (1/1) ... [2022-01-10 18:55:47,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6ab44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:47, skipping insertion in model container [2022-01-10 18:55:47,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:55:47" (1/1) ... [2022-01-10 18:55:47,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:55:47,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:55:48,075 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.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8609,8622] [2022-01-10 18:55:48,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:55:48,143 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:55:48,197 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.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8609,8622] [2022-01-10 18:55:48,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:55:48,239 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:55:48,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48 WrapperNode [2022-01-10 18:55:48,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:55:48,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:55:48,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:55:48,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:55:48,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48" (1/1) ... [2022-01-10 18:55:48,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48" (1/1) ... [2022-01-10 18:55:48,298 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 789 [2022-01-10 18:55:48,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:55:48,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:55:48,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:55:48,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:55:48,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48" (1/1) ... [2022-01-10 18:55:48,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48" (1/1) ... [2022-01-10 18:55:48,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48" (1/1) ... [2022-01-10 18:55:48,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48" (1/1) ... [2022-01-10 18:55:48,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48" (1/1) ... [2022-01-10 18:55:48,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48" (1/1) ... [2022-01-10 18:55:48,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48" (1/1) ... [2022-01-10 18:55:48,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:55:48,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:55:48,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:55:48,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:55:48,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48" (1/1) ... [2022-01-10 18:55:48,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:55:48,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:55:48,387 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 18:55:48,399 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 18:55:48,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:55:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:55:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:55:48,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:55:48,563 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:55:48,565 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:55:49,227 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:55:49,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:55:49,235 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:55:49,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:49 BoogieIcfgContainer [2022-01-10 18:55:49,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:55:49,237 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:55:49,237 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:55:49,238 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:55:49,241 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:49" (1/1) ... [2022-01-10 18:55:49,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:55:49 BasicIcfg [2022-01-10 18:55:49,829 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:55:49,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:55:49,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:55:49,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:55:49,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:55:47" (1/4) ... [2022-01-10 18:55:49,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4101b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:49, skipping insertion in model container [2022-01-10 18:55:49,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:55:48" (2/4) ... [2022-01-10 18:55:49,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4101b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:55:49, skipping insertion in model container [2022-01-10 18:55:49,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:55:49" (3/4) ... [2022-01-10 18:55:49,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4101b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:55:49, skipping insertion in model container [2022-01-10 18:55:49,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:55:49" (4/4) ... [2022-01-10 18:55:49,840 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 18:55:49,845 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:55:49,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:55:49,897 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:55:49,909 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 18:55:49,909 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:55:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 214 states have (on average 1.719626168224299) internal successors, (368), 215 states have internal predecessors, (368), 0 states have call successors, (0), 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 18:55:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 18:55:49,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:49,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:49,938 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:49,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1247106835, now seen corresponding path program 1 times [2022-01-10 18:55:49,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:49,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112637657] [2022-01-10 18:55:49,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:49,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:50,586 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 18:55:50,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:50,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112637657] [2022-01-10 18:55:50,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112637657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:50,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:50,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:55:50,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964250437] [2022-01-10 18:55:50,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:50,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:55:50,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:50,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:55:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:55:50,628 INFO L87 Difference]: Start difference. First operand has 216 states, 214 states have (on average 1.719626168224299) internal successors, (368), 215 states have internal predecessors, (368), 0 states have call successors, (0), 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 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 18:55:51,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:51,108 INFO L93 Difference]: Finished difference Result 437 states and 720 transitions. [2022-01-10 18:55:51,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:55:51,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-10 18:55:51,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:51,128 INFO L225 Difference]: With dead ends: 437 [2022-01-10 18:55:51,128 INFO L226 Difference]: Without dead ends: 329 [2022-01-10 18:55:51,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:55:51,137 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 180 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:55:51,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 689 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:55:51,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-01-10 18:55:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2022-01-10 18:55:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.5) internal successors, (489), 326 states have internal predecessors, (489), 0 states have call successors, (0), 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 18:55:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 489 transitions. [2022-01-10 18:55:51,272 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 489 transitions. Word has length 81 [2022-01-10 18:55:51,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:55:51,274 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 489 transitions. [2022-01-10 18:55:51,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 18:55:51,274 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 489 transitions. [2022-01-10 18:55:51,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 18:55:51,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:51,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:51,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:55:51,282 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:51,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:51,284 INFO L85 PathProgramCache]: Analyzing trace with hash 4620345, now seen corresponding path program 1 times [2022-01-10 18:55:51,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:51,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844239265] [2022-01-10 18:55:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:51,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:51,600 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 18:55:51,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:51,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844239265] [2022-01-10 18:55:51,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844239265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:51,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:51,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:55:51,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947909971] [2022-01-10 18:55:51,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:51,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:55:51,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:51,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:55:51,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:55:51,603 INFO L87 Difference]: Start difference. First operand 327 states and 489 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 18:55:51,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:51,751 INFO L93 Difference]: Finished difference Result 543 states and 829 transitions. [2022-01-10 18:55:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:55:51,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 18:55:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:51,754 INFO L225 Difference]: With dead ends: 543 [2022-01-10 18:55:51,754 INFO L226 Difference]: Without dead ends: 541 [2022-01-10 18:55:51,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:55:51,760 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 449 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:55:51,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 858 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:55:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-10 18:55:51,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 329. [2022-01-10 18:55:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.4969512195121952) internal successors, (491), 328 states have internal predecessors, (491), 0 states have call successors, (0), 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 18:55:51,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 491 transitions. [2022-01-10 18:55:51,865 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 491 transitions. Word has length 82 [2022-01-10 18:55:51,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:55:51,865 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 491 transitions. [2022-01-10 18:55:51,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 18:55:51,866 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 491 transitions. [2022-01-10 18:55:51,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 18:55:51,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:51,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:51,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:55:51,867 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:51,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:51,868 INFO L85 PathProgramCache]: Analyzing trace with hash 144240816, now seen corresponding path program 1 times [2022-01-10 18:55:51,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:51,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155592801] [2022-01-10 18:55:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:51,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:52,215 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 18:55:52,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:52,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155592801] [2022-01-10 18:55:52,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155592801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:52,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:52,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:55:52,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260943433] [2022-01-10 18:55:52,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:52,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:55:52,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:52,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:55:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:55:52,218 INFO L87 Difference]: Start difference. First operand 329 states and 491 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 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 18:55:53,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:53,538 INFO L93 Difference]: Finished difference Result 2604 states and 4061 transitions. [2022-01-10 18:55:53,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:55:53,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 18:55:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:53,552 INFO L225 Difference]: With dead ends: 2604 [2022-01-10 18:55:53,553 INFO L226 Difference]: Without dead ends: 2356 [2022-01-10 18:55:53,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-10 18:55:53,556 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 2293 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:55:53,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2293 Valid, 3138 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:55:53,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2022-01-10 18:55:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1283. [2022-01-10 18:55:53,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.547581903276131) internal successors, (1984), 1282 states have internal predecessors, (1984), 0 states have call successors, (0), 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 18:55:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1984 transitions. [2022-01-10 18:55:53,839 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1984 transitions. Word has length 83 [2022-01-10 18:55:53,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:55:53,839 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1984 transitions. [2022-01-10 18:55:53,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 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 18:55:53,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1984 transitions. [2022-01-10 18:55:53,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 18:55:53,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:53,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:53,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:55:53,842 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:53,842 INFO L85 PathProgramCache]: Analyzing trace with hash 162355901, now seen corresponding path program 1 times [2022-01-10 18:55:53,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:53,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091380270] [2022-01-10 18:55:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:53,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:54,231 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 18:55:54,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:54,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091380270] [2022-01-10 18:55:54,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091380270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:54,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:54,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:55:54,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106496849] [2022-01-10 18:55:54,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:54,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:55:54,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:54,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:55:54,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:55:54,235 INFO L87 Difference]: Start difference. First operand 1283 states and 1984 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:55:54,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:54,769 INFO L93 Difference]: Finished difference Result 2966 states and 4633 transitions. [2022-01-10 18:55:54,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:55:54,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 18:55:54,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:54,779 INFO L225 Difference]: With dead ends: 2966 [2022-01-10 18:55:54,779 INFO L226 Difference]: Without dead ends: 2092 [2022-01-10 18:55:54,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:55:54,789 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 322 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:55:54,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 727 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:55:54,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2022-01-10 18:55:55,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2090. [2022-01-10 18:55:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2089 states have (on average 1.5533748204882718) internal successors, (3245), 2089 states have internal predecessors, (3245), 0 states have call successors, (0), 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 18:55:55,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3245 transitions. [2022-01-10 18:55:55,279 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3245 transitions. Word has length 84 [2022-01-10 18:55:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:55:55,279 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3245 transitions. [2022-01-10 18:55:55,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 18:55:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3245 transitions. [2022-01-10 18:55:55,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:55:55,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:55,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:55,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:55:55,282 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:55,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1277112278, now seen corresponding path program 1 times [2022-01-10 18:55:55,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:55,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913093407] [2022-01-10 18:55:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:55,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:55,460 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 18:55:55,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:55,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913093407] [2022-01-10 18:55:55,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913093407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:55,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:55,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:55:55,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048919307] [2022-01-10 18:55:55,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:55,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:55:55,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:55,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:55:55,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:55:55,463 INFO L87 Difference]: Start difference. First operand 2090 states and 3245 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:55:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:55:56,026 INFO L93 Difference]: Finished difference Result 3876 states and 6049 transitions. [2022-01-10 18:55:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:55:56,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:55:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:55:56,037 INFO L225 Difference]: With dead ends: 3876 [2022-01-10 18:55:56,037 INFO L226 Difference]: Without dead ends: 2366 [2022-01-10 18:55:56,040 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 18:55:56,040 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 222 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:55:56,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 586 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:55:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2022-01-10 18:55:56,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2364. [2022-01-10 18:55:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2363 states have (on average 1.5382987727465087) internal successors, (3635), 2363 states have internal predecessors, (3635), 0 states have call successors, (0), 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 18:55:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 3635 transitions. [2022-01-10 18:55:56,646 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 3635 transitions. Word has length 85 [2022-01-10 18:55:56,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:55:56,647 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 3635 transitions. [2022-01-10 18:55:56,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:55:56,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 3635 transitions. [2022-01-10 18:55:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:55:56,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:55:56,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:55:56,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:55:56,656 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:55:56,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:55:56,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1425651183, now seen corresponding path program 1 times [2022-01-10 18:55:56,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:55:56,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164695086] [2022-01-10 18:55:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:55:56,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:55:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:55:57,013 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 18:55:57,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:55:57,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164695086] [2022-01-10 18:55:57,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164695086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:55:57,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:55:57,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:55:57,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478420687] [2022-01-10 18:55:57,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:55:57,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:55:57,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:55:57,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:55:57,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:55:57,015 INFO L87 Difference]: Start difference. First operand 2364 states and 3635 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:55:59,440 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 18:56:01,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:56:05,520 WARN L534 Checker$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 18:56:07,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:56:09,856 WARN L534 Checker$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 18:56:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:56:15,133 INFO L93 Difference]: Finished difference Result 18594 states and 28845 transitions. [2022-01-10 18:56:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:56:15,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:56:15,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:56:15,198 INFO L225 Difference]: With dead ends: 18594 [2022-01-10 18:56:15,198 INFO L226 Difference]: Without dead ends: 16324 [2022-01-10 18:56:15,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:56:15,207 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1671 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 24 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-01-10 18:56:15,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 1206 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 832 Invalid, 5 Unknown, 0 Unchecked, 13.8s Time] [2022-01-10 18:56:15,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16324 states. [2022-01-10 18:56:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16324 to 8494. [2022-01-10 18:56:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8494 states, 8493 states have (on average 1.540916048510538) internal successors, (13087), 8493 states have internal predecessors, (13087), 0 states have call successors, (0), 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 18:56:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8494 states to 8494 states and 13087 transitions. [2022-01-10 18:56:18,009 INFO L78 Accepts]: Start accepts. Automaton has 8494 states and 13087 transitions. Word has length 85 [2022-01-10 18:56:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:56:18,009 INFO L470 AbstractCegarLoop]: Abstraction has 8494 states and 13087 transitions. [2022-01-10 18:56:18,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:56:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 8494 states and 13087 transitions. [2022-01-10 18:56:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:56:18,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:56:18,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:56:18,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:56:18,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:56:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:56:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1116262838, now seen corresponding path program 1 times [2022-01-10 18:56:18,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:56:18,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692922025] [2022-01-10 18:56:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:18,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:56:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:56:18,141 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 18:56:18,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:56:18,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692922025] [2022-01-10 18:56:18,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692922025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:56:18,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:56:18,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:56:18,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511503730] [2022-01-10 18:56:18,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:56:18,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:56:18,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:56:18,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:56:18,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:56:18,143 INFO L87 Difference]: Start difference. First operand 8494 states and 13087 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:56:22,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:56:22,125 INFO L93 Difference]: Finished difference Result 22424 states and 34541 transitions. [2022-01-10 18:56:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:56:22,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:56:22,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:56:22,163 INFO L225 Difference]: With dead ends: 22424 [2022-01-10 18:56:22,163 INFO L226 Difference]: Without dead ends: 14488 [2022-01-10 18:56:22,175 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 18:56:22,176 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 197 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:56:22,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 580 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:56:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14488 states. [2022-01-10 18:56:26,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14488 to 14453. [2022-01-10 18:56:26,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14453 states, 14452 states have (on average 1.5211043454193192) internal successors, (21983), 14452 states have internal predecessors, (21983), 0 states have call successors, (0), 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 18:56:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14453 states to 14453 states and 21983 transitions. [2022-01-10 18:56:26,202 INFO L78 Accepts]: Start accepts. Automaton has 14453 states and 21983 transitions. Word has length 85 [2022-01-10 18:56:26,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:56:26,203 INFO L470 AbstractCegarLoop]: Abstraction has 14453 states and 21983 transitions. [2022-01-10 18:56:26,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:56:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand 14453 states and 21983 transitions. [2022-01-10 18:56:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:56:26,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:56:26,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:56:26,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:56:26,212 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:56:26,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:56:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1331144434, now seen corresponding path program 1 times [2022-01-10 18:56:26,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:56:26,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88303792] [2022-01-10 18:56:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:26,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:56:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:56:26,332 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 18:56:26,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:56:26,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88303792] [2022-01-10 18:56:26,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88303792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:56:26,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:56:26,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:56:26,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832146461] [2022-01-10 18:56:26,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:56:26,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:56:26,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:56:26,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:56:26,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:56:26,334 INFO L87 Difference]: Start difference. First operand 14453 states and 21983 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:56:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:56:33,760 INFO L93 Difference]: Finished difference Result 39884 states and 60540 transitions. [2022-01-10 18:56:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:56:33,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:56:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:56:33,837 INFO L225 Difference]: With dead ends: 39884 [2022-01-10 18:56:33,837 INFO L226 Difference]: Without dead ends: 26638 [2022-01-10 18:56:33,861 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 18:56:33,861 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 184 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:56:33,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 576 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:56:33,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26638 states. [2022-01-10 18:56:41,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26638 to 26600. [2022-01-10 18:56:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26600 states, 26599 states have (on average 1.4976502876047972) internal successors, (39836), 26599 states have internal predecessors, (39836), 0 states have call successors, (0), 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 18:56:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26600 states to 26600 states and 39836 transitions. [2022-01-10 18:56:41,335 INFO L78 Accepts]: Start accepts. Automaton has 26600 states and 39836 transitions. Word has length 85 [2022-01-10 18:56:41,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:56:41,335 INFO L470 AbstractCegarLoop]: Abstraction has 26600 states and 39836 transitions. [2022-01-10 18:56:41,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:56:41,336 INFO L276 IsEmpty]: Start isEmpty. Operand 26600 states and 39836 transitions. [2022-01-10 18:56:41,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:56:41,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:56:41,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:56:41,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:56:41,347 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:56:41,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:56:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash 354518166, now seen corresponding path program 1 times [2022-01-10 18:56:41,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:56:41,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424313583] [2022-01-10 18:56:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:56:41,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:56:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:56:41,485 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 18:56:41,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:56:41,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424313583] [2022-01-10 18:56:41,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424313583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:56:41,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:56:41,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:56:41,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149318587] [2022-01-10 18:56:41,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:56:41,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:56:41,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:56:41,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:56:41,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:56:41,488 INFO L87 Difference]: Start difference. First operand 26600 states and 39836 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:56:48,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:56:48,695 INFO L93 Difference]: Finished difference Result 36708 states and 54858 transitions. [2022-01-10 18:56:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:56:48,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:56:48,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:56:48,762 INFO L225 Difference]: With dead ends: 36708 [2022-01-10 18:56:48,762 INFO L226 Difference]: Without dead ends: 27586 [2022-01-10 18:56:48,783 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 18:56:48,784 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 175 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:56:48,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 579 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:56:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27586 states.