/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:52:00,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:52:00,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:52:00,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:52:00,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:52:00,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:52:00,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:52:00,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:52:00,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:52:00,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:52:00,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:52:00,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:52:00,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:52:00,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:52:00,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:52:00,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:52:00,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:52:00,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:52:00,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:52:00,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:52:00,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:52:00,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:52:00,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:52:00,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:52:00,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:52:00,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:52:00,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:52:00,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:52:00,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:52:00,451 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:52:00,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:52:00,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:52:00,453 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:52:00,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:52:00,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:52:00,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:52:00,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:52:00,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:52:00,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:52:00,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:52:00,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:52:00,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:52:00,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:52:00,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:52:00,456 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:52:00,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:52:00,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:52:00,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:52:00,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:52:00,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:52:00,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:52:00,457 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:52:00,458 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:52:00,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:52:00,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:52:00,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:52:00,901 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:52:00,902 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:52:00,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-24 04:52:00,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4115f93/a227640ceb574b04b67b8e819bf5b334/FLAGe4c151ac2 [2021-02-24 04:52:01,737 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:52:01,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-24 04:52:01,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4115f93/a227640ceb574b04b67b8e819bf5b334/FLAGe4c151ac2 [2021-02-24 04:52:02,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4115f93/a227640ceb574b04b67b8e819bf5b334 [2021-02-24 04:52:02,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:52:02,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:52:02,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:52:02,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:52:02,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:52:02,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:52:02" (1/1) ... [2021-02-24 04:52:02,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcf3ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:52:02, skipping insertion in model container [2021-02-24 04:52:02,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:52:02" (1/1) ... [2021-02-24 04:52:02,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:52:02,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:52:02,552 WARN L226 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_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[13949,13962] [2021-02-24 04:52:02,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:52:02,673 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:52:02,902 WARN L226 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_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[13949,13962] [2021-02-24 04:52:02,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:52:02,996 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:52:02,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:52:02 WrapperNode [2021-02-24 04:52:02,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:52:02,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:52:02,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:52:02,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:52:03,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:52:02" (1/1) ... [2021-02-24 04:52:03,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:52:02" (1/1) ... [2021-02-24 04:52:03,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:52:02" (1/1) ... [2021-02-24 04:52:03,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:52:02" (1/1) ... [2021-02-24 04:52:03,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:52:02" (1/1) ... [2021-02-24 04:52:03,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:52:02" (1/1) ... [2021-02-24 04:52:03,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:52:02" (1/1) ... [2021-02-24 04:52:03,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:52:03,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:52:03,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:52:03,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:52:03,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:52:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:52:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:52:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:52:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:52:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:52:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:52:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:52:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:52:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:52:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:52:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-24 04:52:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-24 04:52:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-24 04:52:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:52:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-24 04:52:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-24 04:52:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-24 04:52:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-24 04:52:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-24 04:52:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-24 04:52:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-24 04:52:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:52:03,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:52:03,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:52:03,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:52:03,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:52:03,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:52:03,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:52:04,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:52:04,859 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:52:04,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:52:04 BoogieIcfgContainer [2021-02-24 04:52:04,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:52:04,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:52:04,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:52:04,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:52:04,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:52:02" (1/3) ... [2021-02-24 04:52:04,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1813de8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:52:04, skipping insertion in model container [2021-02-24 04:52:04,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:52:02" (2/3) ... [2021-02-24 04:52:04,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1813de8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:52:04, skipping insertion in model container [2021-02-24 04:52:04,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:52:04" (3/3) ... [2021-02-24 04:52:04,875 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2021-02-24 04:52:04,883 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:52:04,888 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:52:04,903 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:52:04,945 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:52:04,945 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:52:04,945 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:52:04,945 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:52:04,946 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:52:04,946 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:52:04,946 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:52:04,946 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:52:04,980 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states. [2021-02-24 04:52:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-02-24 04:52:05,018 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:05,019 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:05,020 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:05,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:05,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2110658267, now seen corresponding path program 1 times [2021-02-24 04:52:05,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:05,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207553236] [2021-02-24 04:52:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:05,117 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:05,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:05,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:05,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:05,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:52:05,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:05,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:06,151 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 04:52:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:06,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:06,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:06,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207553236] [2021-02-24 04:52:06,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:06,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:52:06,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702957383] [2021-02-24 04:52:06,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:52:06,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:06,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:52:06,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:06,611 INFO L87 Difference]: Start difference. First operand 830 states. Second operand 4 states. [2021-02-24 04:52:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:09,805 INFO L93 Difference]: Finished difference Result 1496 states and 1956 transitions. [2021-02-24 04:52:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:52:09,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 426 [2021-02-24 04:52:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:09,838 INFO L225 Difference]: With dead ends: 1496 [2021-02-24 04:52:09,838 INFO L226 Difference]: Without dead ends: 1117 [2021-02-24 04:52:09,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:09,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2021-02-24 04:52:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1110. [2021-02-24 04:52:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2021-02-24 04:52:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1353 transitions. [2021-02-24 04:52:10,019 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1353 transitions. Word has length 426 [2021-02-24 04:52:10,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:10,026 INFO L480 AbstractCegarLoop]: Abstraction has 1110 states and 1353 transitions. [2021-02-24 04:52:10,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:52:10,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1353 transitions. [2021-02-24 04:52:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-02-24 04:52:10,046 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:10,046 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:10,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:52:10,048 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:10,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:10,051 INFO L82 PathProgramCache]: Analyzing trace with hash 880913755, now seen corresponding path program 1 times [2021-02-24 04:52:10,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:10,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706011416] [2021-02-24 04:52:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:10,069 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:10,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:10,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:10,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:10,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:52:10,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:10,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:10,636 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 04:52:10,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:10,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:10,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:10,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706011416] [2021-02-24 04:52:10,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:10,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:52:10,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898625182] [2021-02-24 04:52:10,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:52:10,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:10,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:52:10,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:10,903 INFO L87 Difference]: Start difference. First operand 1110 states and 1353 transitions. Second operand 4 states. [2021-02-24 04:52:13,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:13,251 INFO L93 Difference]: Finished difference Result 2230 states and 2800 transitions. [2021-02-24 04:52:13,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:52:13,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 426 [2021-02-24 04:52:13,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:13,263 INFO L225 Difference]: With dead ends: 2230 [2021-02-24 04:52:13,263 INFO L226 Difference]: Without dead ends: 1836 [2021-02-24 04:52:13,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2021-02-24 04:52:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1824. [2021-02-24 04:52:13,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1824 states. [2021-02-24 04:52:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2261 transitions. [2021-02-24 04:52:13,375 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2261 transitions. Word has length 426 [2021-02-24 04:52:13,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:13,388 INFO L480 AbstractCegarLoop]: Abstraction has 1824 states and 2261 transitions. [2021-02-24 04:52:13,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:52:13,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2261 transitions. [2021-02-24 04:52:13,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-02-24 04:52:13,401 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:13,401 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:13,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:52:13,402 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:13,406 INFO L82 PathProgramCache]: Analyzing trace with hash 233982427, now seen corresponding path program 1 times [2021-02-24 04:52:13,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:13,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901067311] [2021-02-24 04:52:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:13,413 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:13,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:13,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:13,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:13,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:52:13,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:13,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:13,987 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 04:52:13,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:14,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:14,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:14,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901067311] [2021-02-24 04:52:14,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:14,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:52:14,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210165325] [2021-02-24 04:52:14,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:52:14,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:14,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:52:14,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:14,260 INFO L87 Difference]: Start difference. First operand 1824 states and 2261 transitions. Second operand 4 states. [2021-02-24 04:52:16,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:16,757 INFO L93 Difference]: Finished difference Result 3912 states and 4963 transitions. [2021-02-24 04:52:16,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:52:16,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 426 [2021-02-24 04:52:16,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:16,777 INFO L225 Difference]: With dead ends: 3912 [2021-02-24 04:52:16,778 INFO L226 Difference]: Without dead ends: 3202 [2021-02-24 04:52:16,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:16,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2021-02-24 04:52:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 3180. [2021-02-24 04:52:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3180 states. [2021-02-24 04:52:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 3985 transitions. [2021-02-24 04:52:16,968 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 3985 transitions. Word has length 426 [2021-02-24 04:52:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:16,969 INFO L480 AbstractCegarLoop]: Abstraction has 3180 states and 3985 transitions. [2021-02-24 04:52:16,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:52:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 3985 transitions. [2021-02-24 04:52:16,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-02-24 04:52:16,982 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:16,983 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:16,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:52:16,983 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:16,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:16,984 INFO L82 PathProgramCache]: Analyzing trace with hash 342617179, now seen corresponding path program 1 times [2021-02-24 04:52:16,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:16,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981398367] [2021-02-24 04:52:16,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:16,989 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:17,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:17,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:17,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:17,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:52:17,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:17,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:52:17,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:17,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:17,718 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 04:52:17,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:17,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:17,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:18,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981398367] [2021-02-24 04:52:18,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:18,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:52:18,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710414649] [2021-02-24 04:52:18,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:52:18,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:18,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:52:18,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:52:18,059 INFO L87 Difference]: Start difference. First operand 3180 states and 3985 transitions. Second operand 5 states. [2021-02-24 04:52:22,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:22,617 INFO L93 Difference]: Finished difference Result 8999 states and 11348 transitions. [2021-02-24 04:52:22,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:52:22,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 426 [2021-02-24 04:52:22,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:22,649 INFO L225 Difference]: With dead ends: 8999 [2021-02-24 04:52:22,649 INFO L226 Difference]: Without dead ends: 6003 [2021-02-24 04:52:22,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:52:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6003 states. [2021-02-24 04:52:23,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6003 to 6001. [2021-02-24 04:52:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6001 states. [2021-02-24 04:52:23,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6001 states to 6001 states and 7515 transitions. [2021-02-24 04:52:23,087 INFO L78 Accepts]: Start accepts. Automaton has 6001 states and 7515 transitions. Word has length 426 [2021-02-24 04:52:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:23,088 INFO L480 AbstractCegarLoop]: Abstraction has 6001 states and 7515 transitions. [2021-02-24 04:52:23,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:52:23,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6001 states and 7515 transitions. [2021-02-24 04:52:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-02-24 04:52:23,104 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:23,105 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:23,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:52:23,105 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:23,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:23,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2100174259, now seen corresponding path program 1 times [2021-02-24 04:52:23,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:23,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881839341] [2021-02-24 04:52:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:23,112 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:23,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:23,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:23,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:23,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:52:23,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:23,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:23,546 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 04:52:23,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:23,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:23,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:23,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881839341] [2021-02-24 04:52:23,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:23,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:52:23,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925067476] [2021-02-24 04:52:23,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:52:23,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:23,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:52:23,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:23,757 INFO L87 Difference]: Start difference. First operand 6001 states and 7515 transitions. Second operand 4 states. [2021-02-24 04:52:27,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:27,201 INFO L93 Difference]: Finished difference Result 17598 states and 22116 transitions. [2021-02-24 04:52:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:52:27,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2021-02-24 04:52:27,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:27,261 INFO L225 Difference]: With dead ends: 17598 [2021-02-24 04:52:27,261 INFO L226 Difference]: Without dead ends: 11815 [2021-02-24 04:52:27,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11815 states. [2021-02-24 04:52:27,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11815 to 6003. [2021-02-24 04:52:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6003 states. [2021-02-24 04:52:27,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 7517 transitions. [2021-02-24 04:52:27,913 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 7517 transitions. Word has length 427 [2021-02-24 04:52:27,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:27,913 INFO L480 AbstractCegarLoop]: Abstraction has 6003 states and 7517 transitions. [2021-02-24 04:52:27,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:52:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 7517 transitions. [2021-02-24 04:52:27,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-02-24 04:52:27,931 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:27,932 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:27,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:52:27,932 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:27,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1185160965, now seen corresponding path program 1 times [2021-02-24 04:52:27,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:27,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871328353] [2021-02-24 04:52:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:27,941 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:28,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:28,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:28,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:28,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:52:28,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:28,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:52:28,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:28,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:28,483 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 04:52:28,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:28,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:28,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:28,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:28,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871328353] [2021-02-24 04:52:28,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:28,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:52:28,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969276728] [2021-02-24 04:52:28,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:52:28,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:28,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:52:28,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:52:28,732 INFO L87 Difference]: Start difference. First operand 6003 states and 7517 transitions. Second operand 5 states. [2021-02-24 04:52:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:33,168 INFO L93 Difference]: Finished difference Result 17237 states and 21639 transitions. [2021-02-24 04:52:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:52:33,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 428 [2021-02-24 04:52:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:33,211 INFO L225 Difference]: With dead ends: 17237 [2021-02-24 04:52:33,211 INFO L226 Difference]: Without dead ends: 11455 [2021-02-24 04:52:33,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:52:33,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11455 states. [2021-02-24 04:52:34,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11455 to 11453. [2021-02-24 04:52:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11453 states. [2021-02-24 04:52:34,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 14289 transitions. [2021-02-24 04:52:34,229 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 14289 transitions. Word has length 428 [2021-02-24 04:52:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:34,230 INFO L480 AbstractCegarLoop]: Abstraction has 11453 states and 14289 transitions. [2021-02-24 04:52:34,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:52:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 14289 transitions. [2021-02-24 04:52:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-02-24 04:52:34,248 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:34,248 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:34,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:52:34,248 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:34,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:34,249 INFO L82 PathProgramCache]: Analyzing trace with hash -413134307, now seen corresponding path program 1 times [2021-02-24 04:52:34,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:34,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648707700] [2021-02-24 04:52:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:34,253 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:34,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:34,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:34,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:34,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:52:34,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:34,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:34,636 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 04:52:34,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:34,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:34,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:34,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648707700] [2021-02-24 04:52:34,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:34,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:52:34,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038450029] [2021-02-24 04:52:34,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:52:34,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:34,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:52:34,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:34,795 INFO L87 Difference]: Start difference. First operand 11453 states and 14289 transitions. Second operand 4 states. [2021-02-24 04:52:38,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:38,742 INFO L93 Difference]: Finished difference Result 33891 states and 42355 transitions. [2021-02-24 04:52:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:52:38,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 429 [2021-02-24 04:52:38,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:38,788 INFO L225 Difference]: With dead ends: 33891 [2021-02-24 04:52:38,788 INFO L226 Difference]: Without dead ends: 22679 [2021-02-24 04:52:38,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22679 states. [2021-02-24 04:52:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22679 to 11457. [2021-02-24 04:52:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11457 states. [2021-02-24 04:52:39,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11457 states to 11457 states and 14293 transitions. [2021-02-24 04:52:39,905 INFO L78 Accepts]: Start accepts. Automaton has 11457 states and 14293 transitions. Word has length 429 [2021-02-24 04:52:39,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:39,905 INFO L480 AbstractCegarLoop]: Abstraction has 11457 states and 14293 transitions. [2021-02-24 04:52:39,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:52:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 11457 states and 14293 transitions. [2021-02-24 04:52:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2021-02-24 04:52:39,923 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:39,924 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:39,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:52:39,924 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:39,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:39,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1682431751, now seen corresponding path program 1 times [2021-02-24 04:52:39,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:39,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128044221] [2021-02-24 04:52:39,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:39,929 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:40,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:40,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:40,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:40,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:52:40,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:40,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:52:40,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:40,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:40,411 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 04:52:40,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:40,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:40,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:40,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128044221] [2021-02-24 04:52:40,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:40,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:52:40,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855901644] [2021-02-24 04:52:40,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:52:40,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:40,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:52:40,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:52:40,595 INFO L87 Difference]: Start difference. First operand 11457 states and 14293 transitions. Second operand 5 states. [2021-02-24 04:52:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:45,866 INFO L93 Difference]: Finished difference Result 30787 states and 38409 transitions. [2021-02-24 04:52:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:52:45,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 430 [2021-02-24 04:52:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:45,907 INFO L225 Difference]: With dead ends: 30787 [2021-02-24 04:52:45,907 INFO L226 Difference]: Without dead ends: 19577 [2021-02-24 04:52:45,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:52:45,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19577 states. [2021-02-24 04:52:47,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19577 to 19575. [2021-02-24 04:52:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19575 states. [2021-02-24 04:52:47,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19575 states to 19575 states and 24241 transitions. [2021-02-24 04:52:47,791 INFO L78 Accepts]: Start accepts. Automaton has 19575 states and 24241 transitions. Word has length 430 [2021-02-24 04:52:47,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:47,791 INFO L480 AbstractCegarLoop]: Abstraction has 19575 states and 24241 transitions. [2021-02-24 04:52:47,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:52:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 19575 states and 24241 transitions. [2021-02-24 04:52:47,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-02-24 04:52:47,816 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:47,817 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:47,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:52:47,817 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:47,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:47,818 INFO L82 PathProgramCache]: Analyzing trace with hash 776839727, now seen corresponding path program 1 times [2021-02-24 04:52:47,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:47,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170198919] [2021-02-24 04:52:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:47,821 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:47,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:47,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:47,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:47,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:52:47,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:47,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:48,205 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 04:52:48,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:52:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:52:48,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:52:48,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:52:48,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:52:48,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170198919] [2021-02-24 04:52:48,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:52:48,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:52:48,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944215970] [2021-02-24 04:52:48,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:52:48,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:52:48,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:52:48,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:48,466 INFO L87 Difference]: Start difference. First operand 19575 states and 24241 transitions. Second operand 4 states. [2021-02-24 04:52:54,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:52:54,324 INFO L93 Difference]: Finished difference Result 57791 states and 71655 transitions. [2021-02-24 04:52:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:52:54,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2021-02-24 04:52:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:52:54,388 INFO L225 Difference]: With dead ends: 57791 [2021-02-24 04:52:54,389 INFO L226 Difference]: Without dead ends: 38827 [2021-02-24 04:52:54,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:52:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38827 states. [2021-02-24 04:52:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38827 to 19583. [2021-02-24 04:52:56,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19583 states. [2021-02-24 04:52:56,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19583 states to 19583 states and 24249 transitions. [2021-02-24 04:52:56,932 INFO L78 Accepts]: Start accepts. Automaton has 19583 states and 24249 transitions. Word has length 431 [2021-02-24 04:52:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:52:56,932 INFO L480 AbstractCegarLoop]: Abstraction has 19583 states and 24249 transitions. [2021-02-24 04:52:56,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:52:56,933 INFO L276 IsEmpty]: Start isEmpty. Operand 19583 states and 24249 transitions. [2021-02-24 04:52:56,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-02-24 04:52:56,957 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:52:56,957 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:52:56,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 04:52:56,958 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:52:56,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:52:56,959 INFO L82 PathProgramCache]: Analyzing trace with hash -33613215, now seen corresponding path program 1 times [2021-02-24 04:52:56,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:52:56,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042225469] [2021-02-24 04:52:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:52:56,962 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:52:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:52:57,038 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:52:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:52:57,112 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:52:57,798 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:52:57,798 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:52:57,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 04:52:57,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:52:57 BoogieIcfgContainer [2021-02-24 04:52:57,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:52:57,852 INFO L168 Benchmark]: Toolchain (without parser) took 55842.78 ms. Allocated memory was 151.0 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 125.4 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 857.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:52:57,853 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:52:57,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 968.32 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 127.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:52:57,854 INFO L168 Benchmark]: Boogie Preprocessor took 117.97 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 123.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 04:52:57,854 INFO L168 Benchmark]: RCFGBuilder took 1743.07 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 52.3 MB in the end (delta: 70.7 MB). Peak memory consumption was 79.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:52:57,855 INFO L168 Benchmark]: TraceAbstraction took 52984.68 ms. Allocated memory was 151.0 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 51.8 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 782.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:52:57,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 968.32 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 127.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 117.97 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 123.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1743.07 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 52.3 MB in the end (delta: 70.7 MB). Peak memory consumption was 79.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 52984.68 ms. Allocated memory was 151.0 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 51.8 MB in the beginning and 1.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 782.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 815]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] int __return_main; [L16] msg_t nomsg = (msg_t )-1; [L17] port_t p12 = 0; [L18] char p12_old = '\x0'; [L19] char p12_new = '\x0'; [L20] _Bool ep12 = 0; [L21] port_t p13 = 0; [L22] char p13_old = '\x0'; [L23] char p13_new = '\x0'; [L24] _Bool ep13 = 0; [L25] port_t p21 = 0; [L26] char p21_old = '\x0'; [L27] char p21_new = '\x0'; [L28] _Bool ep21 = 0; [L29] port_t p23 = 0; [L30] char p23_old = '\x0'; [L31] char p23_new = '\x0'; [L32] _Bool ep23 = 0; [L33] port_t p31 = 0; [L34] char p31_old = '\x0'; [L35] char p31_new = '\x0'; [L36] _Bool ep31 = 0; [L37] port_t p32 = 0; [L38] char p32_old = '\x0'; [L39] char p32_new = '\x0'; [L40] _Bool ep32 = 0; [L41] char id1 = '\x0'; [L42] char r1 = '\x0'; [L43] char st1 = '\x0'; [L44] char nl1 = '\x0'; [L45] char m1 = '\x0'; [L46] char max1 = '\x0'; [L47] _Bool mode1 = 0; [L48] char id2 = '\x0'; [L49] char r2 = '\x0'; [L50] char st2 = '\x0'; [L51] char nl2 = '\x0'; [L52] char m2 = '\x0'; [L53] char max2 = '\x0'; [L54] _Bool mode2 = 0; [L55] char id3 = '\x0'; [L56] char r3 = '\x0'; [L57] char st3 = '\x0'; [L58] char nl3 = '\x0'; [L59] char m3 = '\x0'; [L60] char max3 = '\x0'; [L61] _Bool mode3 = 0; [L65] void (*nodes[3])() = { &node1, &node2, &node3 }; [L69] int __return_1708; [L70] int __return_1836; [L71] int __return_1954; [L72] int __return_2075; [L73] int __return_2198; [L74] int __tmp_2199_0; [L75] int __return_2307; [L76] int __return_2212; [L79] int main__c1; [L80] int main__i2; [L81] main__c1 = 0 [L82] ep12 = __VERIFIER_nondet_bool() [L83] ep13 = __VERIFIER_nondet_bool() [L84] ep21 = __VERIFIER_nondet_bool() [L85] ep23 = __VERIFIER_nondet_bool() [L86] ep31 = __VERIFIER_nondet_bool() [L87] ep32 = __VERIFIER_nondet_bool() [L88] id1 = __VERIFIER_nondet_char() [L89] r1 = __VERIFIER_nondet_char() [L90] st1 = __VERIFIER_nondet_char() [L91] nl1 = __VERIFIER_nondet_char() [L92] m1 = __VERIFIER_nondet_char() [L93] max1 = __VERIFIER_nondet_char() [L94] mode1 = __VERIFIER_nondet_bool() [L95] id2 = __VERIFIER_nondet_char() [L96] r2 = __VERIFIER_nondet_char() [L97] st2 = __VERIFIER_nondet_char() [L98] nl2 = __VERIFIER_nondet_char() [L99] m2 = __VERIFIER_nondet_char() [L100] max2 = __VERIFIER_nondet_char() [L101] mode2 = __VERIFIER_nondet_bool() [L102] id3 = __VERIFIER_nondet_char() [L103] r3 = __VERIFIER_nondet_char() [L104] st3 = __VERIFIER_nondet_char() [L105] nl3 = __VERIFIER_nondet_char() [L106] m3 = __VERIFIER_nondet_char() [L107] max3 = __VERIFIER_nondet_char() [L108] mode3 = __VERIFIER_nondet_bool() [L110] _Bool init__r121; [L111] _Bool init__r131; [L112] _Bool init__r211; [L113] _Bool init__r231; [L114] _Bool init__r311; [L115] _Bool init__r321; [L116] _Bool init__r122; [L117] int init__tmp; [L118] _Bool init__r132; [L119] int init__tmp___0; [L120] _Bool init__r212; [L121] int init__tmp___1; [L122] _Bool init__r232; [L123] int init__tmp___2; [L124] _Bool init__r312; [L125] int init__tmp___3; [L126] _Bool init__r322; [L127] int init__tmp___4; [L128] int init__tmp___5; [L129] init__r121 = ep12 [L130] init__r131 = ep13 [L131] init__r211 = ep21 [L132] init__r231 = ep23 [L133] init__r311 = ep31 [L134] init__r321 = ep32 [L135] COND FALSE !(!(init__r121 == 0)) [L2225] COND FALSE !(!(init__r131 == 0)) [L2241] init__tmp = 0 [L139] init__r122 = (_Bool)init__tmp [L140] COND FALSE !(!(init__r131 == 0)) [L2202] COND FALSE !(!(init__r121 == 0)) [L2218] init__tmp___0 = 0 [L144] init__r132 = (_Bool)init__tmp___0 [L145] COND FALSE !(!(init__r211 == 0)) [L2179] COND FALSE !(!(init__r231 == 0)) [L2195] init__tmp___1 = 0 [L149] init__r212 = (_Bool)init__tmp___1 [L150] COND FALSE !(!(init__r231 == 0)) [L2156] COND FALSE !(!(init__r211 == 0)) [L2172] init__tmp___2 = 0 [L154] init__r232 = (_Bool)init__tmp___2 [L155] COND FALSE !(!(init__r311 == 0)) [L2133] COND FALSE !(!(init__r321 == 0)) [L2149] init__tmp___3 = 0 [L159] init__r312 = (_Bool)init__tmp___3 [L160] COND FALSE !(!(init__r321 == 0)) [L2110] COND FALSE !(!(init__r311 == 0)) [L2126] init__tmp___4 = 0 [L164] init__r322 = (_Bool)init__tmp___4 [L165] COND TRUE ((int)id1) != ((int)id2) [L167] COND TRUE ((int)id1) != ((int)id3) [L169] COND TRUE ((int)id2) != ((int)id3) [L171] COND TRUE ((int)id1) >= 0 [L173] COND TRUE ((int)id2) >= 0 [L175] COND TRUE ((int)id3) >= 0 [L177] COND TRUE ((int)r1) == 0 [L179] COND TRUE ((int)r2) == 0 [L181] COND TRUE ((int)r3) == 0 [L183] COND TRUE ((int)max1) == ((int)id1) [L185] COND TRUE ((int)max2) == ((int)id2) [L187] COND TRUE ((int)max3) == ((int)id3) [L189] COND TRUE ((int)st1) == 0 [L191] COND TRUE ((int)st2) == 0 [L193] COND TRUE ((int)st3) == 0 [L195] COND TRUE ((int)nl1) == 0 [L197] COND TRUE ((int)nl2) == 0 [L199] COND TRUE ((int)nl3) == 0 [L201] COND TRUE ((int)mode1) == 0 [L203] COND TRUE ((int)mode2) == 0 [L205] COND TRUE ((int)mode3) == 0 [L207] init__tmp___5 = 1 [L208] __return_1708 = init__tmp___5 [L209] main__i2 = __return_1708 [L210] COND TRUE main__i2 != 0 [L212] p12_old = nomsg [L213] p12_new = nomsg [L214] p13_old = nomsg [L215] p13_new = nomsg [L216] p21_old = nomsg [L217] p21_new = nomsg [L218] p23_old = nomsg [L219] p23_new = nomsg [L220] p31_old = nomsg [L221] p31_new = nomsg [L222] p32_old = nomsg [L223] p32_new = nomsg [L224] main__i2 = 0 [L225] COND TRUE main__i2 < 6 [L228] COND FALSE !(!(mode1 == 0)) [L234] COND TRUE ((int)r1) < 2 [L236] COND FALSE !(!(ep12 == 0)) [L247] COND FALSE !(!(ep13 == 0)) [L258] mode1 = 1 [L260] COND FALSE !(!(mode2 == 0)) [L266] COND TRUE ((int)r2) < 2 [L268] COND FALSE !(!(ep21 == 0)) [L279] COND FALSE !(!(ep23 == 0)) [L290] mode2 = 1 [L292] COND FALSE !(!(mode3 == 0)) [L298] COND TRUE ((int)r3) < 2 [L300] COND FALSE !(!(ep31 == 0)) [L311] COND FALSE !(!(ep32 == 0)) [L322] mode3 = 1 [L323] p12_old = p12_new [L324] p12_new = nomsg [L325] p13_old = p13_new [L326] p13_new = nomsg [L327] p21_old = p21_new [L328] p21_new = nomsg [L329] p23_old = p23_new [L330] p23_new = nomsg [L331] p31_old = p31_new [L332] p31_new = nomsg [L333] p32_old = p32_new [L334] p32_new = nomsg [L336] int check__tmp; [L337] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L339] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L341] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L343] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L345] COND FALSE !(((int)r1) >= 2) [L351] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L353] COND TRUE ((int)r1) < 2 [L355] COND FALSE !(((int)r1) >= 2) [L361] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L363] COND TRUE ((int)r1) < 2 [L365] check__tmp = 1 [L366] __return_1836 = check__tmp [L367] main__c1 = __return_1836 [L369] _Bool __tmp_1; [L370] __tmp_1 = main__c1 [L371] _Bool assert__arg; [L372] assert__arg = __tmp_1 [L373] COND FALSE !(assert__arg == 0) [L379] int main____CPAchecker_TMP_0 = main__i2; [L380] main__i2 = main__i2 + 1 [L381] COND TRUE main__i2 < 6 [L384] COND TRUE !(mode1 == 0) [L386] r1 = (char)(((int)r1) + 1) [L387] COND FALSE !(!(ep21 == 0)) [L395] COND FALSE !(!(ep31 == 0)) [L403] COND FALSE !(((int)r1) == 2) [L409] mode1 = 0 [L411] COND TRUE !(mode2 == 0) [L413] r2 = (char)(((int)r2) + 1) [L414] COND FALSE !(!(ep12 == 0)) [L422] COND FALSE !(!(ep32 == 0)) [L430] COND FALSE !(((int)r2) == 2) [L436] mode2 = 0 [L438] COND TRUE !(mode3 == 0) [L440] r3 = (char)(((int)r3) + 1) [L441] COND FALSE !(!(ep13 == 0)) [L449] COND FALSE !(!(ep23 == 0)) [L457] COND FALSE !(((int)r3) == 2) [L463] mode3 = 0 [L464] p12_old = p12_new [L465] p12_new = nomsg [L466] p13_old = p13_new [L467] p13_new = nomsg [L468] p21_old = p21_new [L469] p21_new = nomsg [L470] p23_old = p23_new [L471] p23_new = nomsg [L472] p31_old = p31_new [L473] p31_new = nomsg [L474] p32_old = p32_new [L475] p32_new = nomsg [L477] int check__tmp; [L478] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L480] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L482] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L484] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L486] COND FALSE !(((int)r1) >= 2) [L492] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L494] COND TRUE ((int)r1) < 2 [L496] COND FALSE !(((int)r1) >= 2) [L502] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L504] COND TRUE ((int)r1) < 2 [L506] check__tmp = 1 [L507] __return_1954 = check__tmp [L508] main__c1 = __return_1954 [L510] _Bool __tmp_2; [L511] __tmp_2 = main__c1 [L512] _Bool assert__arg; [L513] assert__arg = __tmp_2 [L514] COND FALSE !(assert__arg == 0) [L520] int main____CPAchecker_TMP_0 = main__i2; [L521] main__i2 = main__i2 + 1 [L522] COND TRUE main__i2 < 6 [L525] COND FALSE !(!(mode1 == 0)) [L531] COND TRUE ((int)r1) < 2 [L533] COND FALSE !(!(ep12 == 0)) [L544] COND FALSE !(!(ep13 == 0)) [L555] mode1 = 1 [L557] COND FALSE !(!(mode2 == 0)) [L563] COND TRUE ((int)r2) < 2 [L565] COND FALSE !(!(ep21 == 0)) [L576] COND FALSE !(!(ep23 == 0)) [L587] mode2 = 1 [L589] COND FALSE !(!(mode3 == 0)) [L595] COND TRUE ((int)r3) < 2 [L597] COND FALSE !(!(ep31 == 0)) [L608] COND FALSE !(!(ep32 == 0)) [L619] mode3 = 1 [L620] p12_old = p12_new [L621] p12_new = nomsg [L622] p13_old = p13_new [L623] p13_new = nomsg [L624] p21_old = p21_new [L625] p21_new = nomsg [L626] p23_old = p23_new [L627] p23_new = nomsg [L628] p31_old = p31_new [L629] p31_new = nomsg [L630] p32_old = p32_new [L631] p32_new = nomsg [L633] int check__tmp; [L634] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L636] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L638] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L640] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L642] COND FALSE !(((int)r1) >= 2) [L648] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L650] COND TRUE ((int)r1) < 2 [L652] COND FALSE !(((int)r1) >= 2) [L658] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L660] COND TRUE ((int)r1) < 2 [L662] check__tmp = 1 [L663] __return_2075 = check__tmp [L664] main__c1 = __return_2075 [L666] _Bool __tmp_3; [L667] __tmp_3 = main__c1 [L668] _Bool assert__arg; [L669] assert__arg = __tmp_3 [L670] COND FALSE !(assert__arg == 0) [L676] int main____CPAchecker_TMP_0 = main__i2; [L677] main__i2 = main__i2 + 1 [L678] COND TRUE main__i2 < 6 [L681] COND TRUE !(mode1 == 0) [L683] r1 = (char)(((int)r1) + 1) [L684] COND FALSE !(!(ep21 == 0)) [L692] COND FALSE !(!(ep31 == 0)) [L700] COND TRUE ((int)r1) == 2 [L702] COND TRUE ((int)max1) == ((int)id1) [L704] st1 = 1 [L706] mode1 = 0 [L708] COND TRUE !(mode2 == 0) [L710] r2 = (char)(((int)r2) + 1) [L711] COND FALSE !(!(ep12 == 0)) [L719] COND FALSE !(!(ep32 == 0)) [L727] COND TRUE ((int)r2) == 2 [L729] COND TRUE ((int)max2) == ((int)id2) [L731] st2 = 1 [L733] mode2 = 0 [L735] COND TRUE !(mode3 == 0) [L737] r3 = (char)(((int)r3) + 1) [L738] COND FALSE !(!(ep13 == 0)) [L746] COND FALSE !(!(ep23 == 0)) [L754] COND TRUE ((int)r3) == 2 [L756] COND TRUE ((int)max3) == ((int)id3) [L758] st3 = 1 [L760] mode3 = 0 [L761] p12_old = p12_new [L762] p12_new = nomsg [L763] p13_old = p13_new [L764] p13_new = nomsg [L765] p21_old = p21_new [L766] p21_new = nomsg [L767] p23_old = p23_new [L768] p23_new = nomsg [L769] p31_old = p31_new [L770] p31_new = nomsg [L771] p32_old = p32_new [L772] p32_new = nomsg [L774] int check__tmp; [L775] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) <= 1) [L1400] check__tmp = 0 [L803] __return_2198 = check__tmp [L804] main__c1 = __return_2198 [L805] __tmp_2199_0 = main____CPAchecker_TMP_0 [L807] main____CPAchecker_TMP_0 = __tmp_2199_0 [L809] _Bool __tmp_4; [L810] __tmp_4 = main__c1 [L811] _Bool assert__arg; [L812] assert__arg = __tmp_4 [L813] COND TRUE assert__arg == 0 [L815] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 838 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 36.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9789 SDtfs, 7678 SDslu, 7634 SDs, 0 SdLazy, 10270 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19583occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 36325 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...