/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/locks/test_locks_15-2.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-d966a43
[2022-01-31 16:17:32,483 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-01-31 16:17:32,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-31 16:17:32,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-31 16:17:32,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-31 16:17:32,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-31 16:17:32,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-31 16:17:32,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-31 16:17:32,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-31 16:17:32,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-31 16:17:32,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-01-31 16:17:32,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-31 16:17:32,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-31 16:17:32,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-31 16:17:32,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-31 16:17:32,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-31 16:17:32,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-31 16:17:32,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-31 16:17:32,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-31 16:17:32,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-31 16:17:32,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-31 16:17:32,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-31 16:17:32,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-01-31 16:17:32,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-31 16:17:32,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-31 16:17:32,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-31 16:17:32,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-31 16:17:32,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-31 16:17:32,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-31 16:17:32,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-31 16:17:32,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-31 16:17:32,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-31 16:17:32,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-31 16:17:32,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-31 16:17:32,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-31 16:17:32,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-31 16:17:32,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-31 16:17:32,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-31 16:17:32,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-31 16:17:32,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-01-31 16:17:32,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf
[2022-01-31 16:17:32,572 INFO L113 SettingsManager]: Loading preferences was successful
[2022-01-31 16:17:32,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-31 16:17:32,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-31 16:17:32,573 INFO L138 SettingsManager]: * sizeof long=4
[2022-01-31 16:17:32,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-01-31 16:17:32,573 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-01-31 16:17:32,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-01-31 16:17:32,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-01-31 16:17:32,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-31 16:17:32,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-01-31 16:17:32,574 INFO L138 SettingsManager]: * sizeof long double=12
[2022-01-31 16:17:32,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-01-31 16:17:32,574 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-01-31 16:17:32,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-01-31 16:17:32,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-31 16:17:32,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-01-31 16:17:32,575 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-01-31 16:17:32,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-01-31 16:17:32,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 16:17:32,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-31 16:17:32,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-01-31 16:17:32,576 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-31 16:17:32,576 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-31 16:17:32,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-31 16:17:32,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-31 16:17:32,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-31 16:17:32,764 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-01-31 16:17:32,765 INFO L275 PluginConnector]: CDTParser initialized
[2022-01-31 16:17:32,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-2.c
[2022-01-31 16:17:32,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/046b483dc/261ca985fe2941db92a3e6c39131f990/FLAG6fba7a14a
[2022-01-31 16:17:33,202 INFO L306 CDTParser]: Found 1 translation units.
[2022-01-31 16:17:33,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c
[2022-01-31 16:17:33,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/046b483dc/261ca985fe2941db92a3e6c39131f990/FLAG6fba7a14a
[2022-01-31 16:17:33,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/046b483dc/261ca985fe2941db92a3e6c39131f990
[2022-01-31 16:17:33,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-31 16:17:33,225 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-31 16:17:33,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-31 16:17:33,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-31 16:17:33,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-31 16:17:33,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:17:33" (1/1) ...
[2022-01-31 16:17:33,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77083cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:17:33, skipping insertion in model container
[2022-01-31 16:17:33,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:17:33" (1/1) ...
[2022-01-31 16:17:33,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-01-31 16:17:33,258 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-01-31 16:17:33,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c[5628,5641]
[2022-01-31 16:17:33,466 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 16:17:33,471 INFO L203 MainTranslator]: Completed pre-run
[2022-01-31 16:17:33,507 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c[5628,5641]
[2022-01-31 16:17:33,508 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 16:17:33,518 INFO L208 MainTranslator]: Completed translation
[2022-01-31 16:17:33,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:17:33 WrapperNode
[2022-01-31 16:17:33,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-31 16:17:33,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-31 16:17:33,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-31 16:17:33,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-01-31 16:17:33,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:17:33" (1/1) ...
[2022-01-31 16:17:33,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:17:33" (1/1) ...
[2022-01-31 16:17:33,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:17:33" (1/1) ...
[2022-01-31 16:17:33,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:17:33" (1/1) ...
[2022-01-31 16:17:33,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:17:33" (1/1) ...
[2022-01-31 16:17:33,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:17:33" (1/1) ...
[2022-01-31 16:17:33,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:17:33" (1/1) ...
[2022-01-31 16:17:33,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-31 16:17:33,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-31 16:17:33,564 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-01-31 16:17:33,564 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-01-31 16:17:33,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:17:33" (1/1) ...
[2022-01-31 16:17:33,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 16:17:33,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-31 16:17:33,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-31 16:17:33,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-31 16:17:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-01-31 16:17:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-31 16:17:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-01-31 16:17:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-01-31 16:17:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-01-31 16:17:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-01-31 16:17:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-01-31 16:17:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-31 16:17:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-01-31 16:17:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-01-31 16:17:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-01-31 16:17:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-31 16:17:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-31 16:17:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-01-31 16:17:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-01-31 16:17:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-31 16:17:33,705 INFO L234 CfgBuilder]: Building ICFG
[2022-01-31 16:17:33,706 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-31 16:17:33,875 INFO L275 CfgBuilder]: Performing block encoding
[2022-01-31 16:17:33,879 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-31 16:17:33,879 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-31 16:17:33,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:17:33 BoogieIcfgContainer
[2022-01-31 16:17:33,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-31 16:17:33,881 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-31 16:17:33,881 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2022-01-31 16:17:33,882 INFO L275 PluginConnector]: IcfgTransformer initialized
[2022-01-31 16:17:33,884 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:17:33" (1/1) ...
[2022-01-31 16:17:33,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:17:33 BasicIcfg
[2022-01-31 16:17:33,898 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-31 16:17:33,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-31 16:17:33,899 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-01-31 16:17:33,901 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-01-31 16:17:33,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:17:33" (1/4) ...
[2022-01-31 16:17:33,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1cb5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:17:33, skipping insertion in model container
[2022-01-31 16:17:33,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:17:33" (2/4) ...
[2022-01-31 16:17:33,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1cb5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:17:33, skipping insertion in model container
[2022-01-31 16:17:33,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:17:33" (3/4) ...
[2022-01-31 16:17:33,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1cb5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:17:33, skipping insertion in model container
[2022-01-31 16:17:33,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 04:17:33" (4/4) ...
[2022-01-31 16:17:33,903 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.cJordan
[2022-01-31 16:17:33,906 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION
[2022-01-31 16:17:33,906 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-31 16:17:33,934 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-31 16:17:33,938 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-31 16:17:33,938 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-31 16:17:33,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 55 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-01-31 16:17:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-01-31 16:17:33,953 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:33,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:33,953 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:33,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash 539653987, now seen corresponding path program 1 times
[2022-01-31 16:17:33,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:33,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207960215]
[2022-01-31 16:17:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:33,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:34,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:34,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:34,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207960215]
[2022-01-31 16:17:34,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207960215] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:34,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:34,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:34,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32181412]
[2022-01-31 16:17:34,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:34,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:34,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:34,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:34,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:34,280 INFO L87 Difference]: Start difference. First operand has 60 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 55 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:34,434 INFO L93 Difference]: Finished difference Result 111 states and 198 transitions.
[2022-01-31 16:17:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:34,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26
[2022-01-31 16:17:34,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:34,445 INFO L225 Difference]: With dead ends: 111
[2022-01-31 16:17:34,445 INFO L226 Difference]: Without dead ends: 103
[2022-01-31 16:17:34,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:34,450 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 259 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:34,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 119 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2022-01-31 16:17:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71.
[2022-01-31 16:17:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.8955223880597014) internal successors, (127), 67 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 130 transitions.
[2022-01-31 16:17:34,484 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 130 transitions. Word has length 26
[2022-01-31 16:17:34,484 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:34,484 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 130 transitions.
[2022-01-31 16:17:34,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 130 transitions.
[2022-01-31 16:17:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-01-31 16:17:34,485 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:34,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:34,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-31 16:17:34,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:34,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash -457418366, now seen corresponding path program 1 times
[2022-01-31 16:17:34,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:34,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625538570]
[2022-01-31 16:17:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:34,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:34,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:34,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:34,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625538570]
[2022-01-31 16:17:34,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625538570] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:34,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:34,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:34,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630290369]
[2022-01-31 16:17:34,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:34,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:34,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:34,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:34,539 INFO L87 Difference]: Start difference. First operand 71 states and 130 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:34,629 INFO L93 Difference]: Finished difference Result 103 states and 187 transitions.
[2022-01-31 16:17:34,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:34,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26
[2022-01-31 16:17:34,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:34,631 INFO L225 Difference]: With dead ends: 103
[2022-01-31 16:17:34,631 INFO L226 Difference]: Without dead ends: 103
[2022-01-31 16:17:34,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:34,632 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 223 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:34,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 135 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:34,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2022-01-31 16:17:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101.
[2022-01-31 16:17:34,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.8865979381443299) internal successors, (183), 97 states have internal predecessors, (183), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 186 transitions.
[2022-01-31 16:17:34,638 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 186 transitions. Word has length 26
[2022-01-31 16:17:34,638 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:34,638 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 186 transitions.
[2022-01-31 16:17:34,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 186 transitions.
[2022-01-31 16:17:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-01-31 16:17:34,639 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:34,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:34,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-31 16:17:34,639 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:34,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash -450563475, now seen corresponding path program 1 times
[2022-01-31 16:17:34,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:34,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043271281]
[2022-01-31 16:17:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:34,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:34,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:34,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043271281]
[2022-01-31 16:17:34,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043271281] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:34,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:34,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:34,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947950147]
[2022-01-31 16:17:34,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:34,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:34,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:34,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:34,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:34,683 INFO L87 Difference]: Start difference. First operand 101 states and 186 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:34,776 INFO L93 Difference]: Finished difference Result 106 states and 189 transitions.
[2022-01-31 16:17:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:34,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27
[2022-01-31 16:17:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:34,778 INFO L225 Difference]: With dead ends: 106
[2022-01-31 16:17:34,778 INFO L226 Difference]: Without dead ends: 106
[2022-01-31 16:17:34,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:34,779 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 196 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:34,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 163 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:34,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2022-01-31 16:17:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104.
[2022-01-31 16:17:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.85) internal successors, (185), 100 states have internal predecessors, (185), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 188 transitions.
[2022-01-31 16:17:34,784 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 188 transitions. Word has length 27
[2022-01-31 16:17:34,784 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:34,784 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 188 transitions.
[2022-01-31 16:17:34,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 188 transitions.
[2022-01-31 16:17:34,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-01-31 16:17:34,785 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:34,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:34,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-31 16:17:34,785 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:34,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:34,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1295035346, now seen corresponding path program 1 times
[2022-01-31 16:17:34,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:34,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088622630]
[2022-01-31 16:17:34,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:34,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:34,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:34,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:34,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088622630]
[2022-01-31 16:17:34,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088622630] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:34,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:34,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:34,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670385832]
[2022-01-31 16:17:34,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:34,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:34,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:34,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:34,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:34,822 INFO L87 Difference]: Start difference. First operand 104 states and 188 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:34,917 INFO L93 Difference]: Finished difference Result 197 states and 358 transitions.
[2022-01-31 16:17:34,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:34,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27
[2022-01-31 16:17:34,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:34,918 INFO L225 Difference]: With dead ends: 197
[2022-01-31 16:17:34,918 INFO L226 Difference]: Without dead ends: 197
[2022-01-31 16:17:34,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:34,927 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 248 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:34,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 109 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:34,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states.
[2022-01-31 16:17:34,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195.
[2022-01-31 16:17:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.8534031413612566) internal successors, (354), 191 states have internal predecessors, (354), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 357 transitions.
[2022-01-31 16:17:34,938 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 357 transitions. Word has length 27
[2022-01-31 16:17:34,939 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:34,939 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 357 transitions.
[2022-01-31 16:17:34,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:34,939 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 357 transitions.
[2022-01-31 16:17:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-01-31 16:17:34,939 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:34,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:34,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-01-31 16:17:34,940 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:34,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash -297962993, now seen corresponding path program 1 times
[2022-01-31 16:17:34,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:34,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505480682]
[2022-01-31 16:17:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:34,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:34,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:34,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:34,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505480682]
[2022-01-31 16:17:34,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505480682] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:34,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:34,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:34,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865423558]
[2022-01-31 16:17:34,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:34,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:34,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:34,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:34,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:34,974 INFO L87 Difference]: Start difference. First operand 195 states and 357 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:35,045 INFO L93 Difference]: Finished difference Result 253 states and 464 transitions.
[2022-01-31 16:17:35,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:35,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27
[2022-01-31 16:17:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:35,046 INFO L225 Difference]: With dead ends: 253
[2022-01-31 16:17:35,046 INFO L226 Difference]: Without dead ends: 253
[2022-01-31 16:17:35,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:35,047 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 161 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:35,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 188 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states.
[2022-01-31 16:17:35,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 195.
[2022-01-31 16:17:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.8429319371727748) internal successors, (352), 191 states have internal predecessors, (352), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 355 transitions.
[2022-01-31 16:17:35,053 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 355 transitions. Word has length 27
[2022-01-31 16:17:35,054 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:35,054 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 355 transitions.
[2022-01-31 16:17:35,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,054 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 355 transitions.
[2022-01-31 16:17:35,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-01-31 16:17:35,055 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:35,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:35,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-01-31 16:17:35,055 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:35,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1491357826, now seen corresponding path program 1 times
[2022-01-31 16:17:35,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:35,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420458281]
[2022-01-31 16:17:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:35,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:35,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:35,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420458281]
[2022-01-31 16:17:35,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420458281] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:35,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:35,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:35,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740396158]
[2022-01-31 16:17:35,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:35,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:35,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:35,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:35,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:35,083 INFO L87 Difference]: Start difference. First operand 195 states and 355 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:35,156 INFO L93 Difference]: Finished difference Result 369 states and 678 transitions.
[2022-01-31 16:17:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:35,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28
[2022-01-31 16:17:35,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:35,158 INFO L225 Difference]: With dead ends: 369
[2022-01-31 16:17:35,158 INFO L226 Difference]: Without dead ends: 369
[2022-01-31 16:17:35,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:35,160 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 239 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:35,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 106 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:35,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states.
[2022-01-31 16:17:35,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 263.
[2022-01-31 16:17:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 259 states have (on average 1.83011583011583) internal successors, (474), 259 states have internal predecessors, (474), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 477 transitions.
[2022-01-31 16:17:35,178 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 477 transitions. Word has length 28
[2022-01-31 16:17:35,183 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:35,183 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 477 transitions.
[2022-01-31 16:17:35,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 477 transitions.
[2022-01-31 16:17:35,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-01-31 16:17:35,186 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:35,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:35,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-01-31 16:17:35,187 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:35,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:35,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1806537117, now seen corresponding path program 1 times
[2022-01-31 16:17:35,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:35,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328773093]
[2022-01-31 16:17:35,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:35,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:35,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:35,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328773093]
[2022-01-31 16:17:35,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328773093] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:35,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:35,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:35,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126584587]
[2022-01-31 16:17:35,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:35,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:35,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:35,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:35,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:35,219 INFO L87 Difference]: Start difference. First operand 263 states and 477 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:35,285 INFO L93 Difference]: Finished difference Result 377 states and 680 transitions.
[2022-01-31 16:17:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:35,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28
[2022-01-31 16:17:35,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:35,287 INFO L225 Difference]: With dead ends: 377
[2022-01-31 16:17:35,287 INFO L226 Difference]: Without dead ends: 377
[2022-01-31 16:17:35,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:35,289 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 211 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:35,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 139 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:35,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states.
[2022-01-31 16:17:35,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 375.
[2022-01-31 16:17:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 371 states have (on average 1.8221024258760108) internal successors, (676), 371 states have internal predecessors, (676), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 679 transitions.
[2022-01-31 16:17:35,296 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 679 transitions. Word has length 28
[2022-01-31 16:17:35,296 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:35,296 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 679 transitions.
[2022-01-31 16:17:35,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 679 transitions.
[2022-01-31 16:17:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-31 16:17:35,297 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:35,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:35,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-01-31 16:17:35,298 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:35,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:35,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1012580010, now seen corresponding path program 1 times
[2022-01-31 16:17:35,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:35,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348967906]
[2022-01-31 16:17:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:35,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:35,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:35,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348967906]
[2022-01-31 16:17:35,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348967906] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:35,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:35,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:35,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942180537]
[2022-01-31 16:17:35,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:35,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:35,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:35,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:35,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:35,339 INFO L87 Difference]: Start difference. First operand 375 states and 679 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:35,418 INFO L93 Difference]: Finished difference Result 383 states and 684 transitions.
[2022-01-31 16:17:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:35,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29
[2022-01-31 16:17:35,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:35,424 INFO L225 Difference]: With dead ends: 383
[2022-01-31 16:17:35,427 INFO L226 Difference]: Without dead ends: 383
[2022-01-31 16:17:35,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:35,428 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 194 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:35,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 157 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:35,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states.
[2022-01-31 16:17:35,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 381.
[2022-01-31 16:17:35,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 377 states have (on average 1.8037135278514589) internal successors, (680), 377 states have internal predecessors, (680), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 683 transitions.
[2022-01-31 16:17:35,434 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 683 transitions. Word has length 29
[2022-01-31 16:17:35,435 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:35,435 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 683 transitions.
[2022-01-31 16:17:35,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 683 transitions.
[2022-01-31 16:17:35,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-31 16:17:35,437 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:35,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:35,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-01-31 16:17:35,437 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:35,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:35,438 INFO L85 PathProgramCache]: Analyzing trace with hash 168108139, now seen corresponding path program 1 times
[2022-01-31 16:17:35,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:35,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869031882]
[2022-01-31 16:17:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:35,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:35,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:35,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869031882]
[2022-01-31 16:17:35,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869031882] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:35,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:35,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:35,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477332341]
[2022-01-31 16:17:35,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:35,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:35,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:35,489 INFO L87 Difference]: Start difference. First operand 381 states and 683 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:35,559 INFO L93 Difference]: Finished difference Result 715 states and 1292 transitions.
[2022-01-31 16:17:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:35,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29
[2022-01-31 16:17:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:35,562 INFO L225 Difference]: With dead ends: 715
[2022-01-31 16:17:35,562 INFO L226 Difference]: Without dead ends: 715
[2022-01-31 16:17:35,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:35,564 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 232 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:35,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 105 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states.
[2022-01-31 16:17:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 521.
[2022-01-31 16:17:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 517 states have (on average 1.7794970986460348) internal successors, (920), 517 states have internal predecessors, (920), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 923 transitions.
[2022-01-31 16:17:35,574 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 923 transitions. Word has length 29
[2022-01-31 16:17:35,574 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:35,574 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 923 transitions.
[2022-01-31 16:17:35,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 923 transitions.
[2022-01-31 16:17:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2022-01-31 16:17:35,576 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:35,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:35,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-01-31 16:17:35,576 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:35,577 INFO L85 PathProgramCache]: Analyzing trace with hash -828964214, now seen corresponding path program 1 times
[2022-01-31 16:17:35,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:35,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994456884]
[2022-01-31 16:17:35,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:35,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:35,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:35,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994456884]
[2022-01-31 16:17:35,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994456884] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:35,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:35,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:35,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645466195]
[2022-01-31 16:17:35,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:35,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:35,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:35,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:35,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:35,623 INFO L87 Difference]: Start difference. First operand 521 states and 923 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:35,692 INFO L93 Difference]: Finished difference Result 739 states and 1304 transitions.
[2022-01-31 16:17:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:35,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29
[2022-01-31 16:17:35,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:35,694 INFO L225 Difference]: With dead ends: 739
[2022-01-31 16:17:35,694 INFO L226 Difference]: Without dead ends: 739
[2022-01-31 16:17:35,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:35,695 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 205 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:35,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 141 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states.
[2022-01-31 16:17:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 737.
[2022-01-31 16:17:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 733 states have (on average 1.7735334242837653) internal successors, (1300), 733 states have internal predecessors, (1300), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1303 transitions.
[2022-01-31 16:17:35,705 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1303 transitions. Word has length 29
[2022-01-31 16:17:35,706 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:35,706 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1303 transitions.
[2022-01-31 16:17:35,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1303 transitions.
[2022-01-31 16:17:35,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2022-01-31 16:17:35,706 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:35,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:35,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-01-31 16:17:35,707 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:35,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash 916417497, now seen corresponding path program 1 times
[2022-01-31 16:17:35,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:35,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23926792]
[2022-01-31 16:17:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:35,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:35,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:35,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23926792]
[2022-01-31 16:17:35,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23926792] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:35,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:35,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:35,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289058779]
[2022-01-31 16:17:35,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:35,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:35,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:35,731 INFO L87 Difference]: Start difference. First operand 737 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:35,801 INFO L93 Difference]: Finished difference Result 747 states and 1304 transitions.
[2022-01-31 16:17:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:35,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30
[2022-01-31 16:17:35,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:35,804 INFO L225 Difference]: With dead ends: 747
[2022-01-31 16:17:35,804 INFO L226 Difference]: Without dead ends: 747
[2022-01-31 16:17:35,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:35,804 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 193 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:35,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 154 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states.
[2022-01-31 16:17:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 745.
[2022-01-31 16:17:35,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 741 states have (on average 1.7543859649122806) internal successors, (1300), 741 states have internal predecessors, (1300), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1303 transitions.
[2022-01-31 16:17:35,815 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1303 transitions. Word has length 30
[2022-01-31 16:17:35,815 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:35,815 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1303 transitions.
[2022-01-31 16:17:35,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1303 transitions.
[2022-01-31 16:17:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2022-01-31 16:17:35,815 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:35,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:35,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-01-31 16:17:35,816 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:35,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash 71945626, now seen corresponding path program 1 times
[2022-01-31 16:17:35,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:35,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988607370]
[2022-01-31 16:17:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:35,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:35,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:35,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988607370]
[2022-01-31 16:17:35,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988607370] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:35,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:35,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:35,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128141855]
[2022-01-31 16:17:35,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:35,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:35,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:35,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:35,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:35,840 INFO L87 Difference]: Start difference. First operand 745 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:35,937 INFO L93 Difference]: Finished difference Result 1387 states and 2448 transitions.
[2022-01-31 16:17:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:35,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30
[2022-01-31 16:17:35,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:35,941 INFO L225 Difference]: With dead ends: 1387
[2022-01-31 16:17:35,941 INFO L226 Difference]: Without dead ends: 1387
[2022-01-31 16:17:35,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:35,942 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 225 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:35,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 104 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states.
[2022-01-31 16:17:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1033.
[2022-01-31 16:17:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1029 states have (on average 1.7220602526724975) internal successors, (1772), 1029 states have internal predecessors, (1772), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1775 transitions.
[2022-01-31 16:17:35,958 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1775 transitions. Word has length 30
[2022-01-31 16:17:35,958 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:35,958 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1775 transitions.
[2022-01-31 16:17:35,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:35,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1775 transitions.
[2022-01-31 16:17:35,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2022-01-31 16:17:35,960 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:35,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:35,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-01-31 16:17:35,960 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:35,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash -925126727, now seen corresponding path program 1 times
[2022-01-31 16:17:35,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:35,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841478222]
[2022-01-31 16:17:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:35,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:35,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:35,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841478222]
[2022-01-31 16:17:35,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841478222] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:35,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:35,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:35,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121717222]
[2022-01-31 16:17:35,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:35,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:35,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:35,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:35,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:36,000 INFO L87 Difference]: Start difference. First operand 1033 states and 1775 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:36,069 INFO L93 Difference]: Finished difference Result 1451 states and 2488 transitions.
[2022-01-31 16:17:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:36,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30
[2022-01-31 16:17:36,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:36,073 INFO L225 Difference]: With dead ends: 1451
[2022-01-31 16:17:36,073 INFO L226 Difference]: Without dead ends: 1451
[2022-01-31 16:17:36,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:36,074 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 199 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:36,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 143 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:36,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states.
[2022-01-31 16:17:36,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1449.
[2022-01-31 16:17:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1445 states have (on average 1.719031141868512) internal successors, (2484), 1445 states have internal predecessors, (2484), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2487 transitions.
[2022-01-31 16:17:36,094 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2487 transitions. Word has length 30
[2022-01-31 16:17:36,094 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:36,094 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 2487 transitions.
[2022-01-31 16:17:36,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2487 transitions.
[2022-01-31 16:17:36,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-01-31 16:17:36,095 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:36,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:36,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2022-01-31 16:17:36,095 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:36,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2064620282, now seen corresponding path program 1 times
[2022-01-31 16:17:36,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:36,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036195075]
[2022-01-31 16:17:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:36,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:36,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:36,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036195075]
[2022-01-31 16:17:36,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036195075] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:36,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:36,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:36,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289883905]
[2022-01-31 16:17:36,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:36,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:36,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:36,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:36,127 INFO L87 Difference]: Start difference. First operand 1449 states and 2487 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:36,193 INFO L93 Difference]: Finished difference Result 1467 states and 2488 transitions.
[2022-01-31 16:17:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:36,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31
[2022-01-31 16:17:36,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:36,197 INFO L225 Difference]: With dead ends: 1467
[2022-01-31 16:17:36,197 INFO L226 Difference]: Without dead ends: 1467
[2022-01-31 16:17:36,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:36,197 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 192 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:36,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 151 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states.
[2022-01-31 16:17:36,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1465.
[2022-01-31 16:17:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1461 states have (on average 1.700205338809035) internal successors, (2484), 1461 states have internal predecessors, (2484), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2487 transitions.
[2022-01-31 16:17:36,217 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2487 transitions. Word has length 31
[2022-01-31 16:17:36,217 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:36,217 INFO L470 AbstractCegarLoop]: Abstraction has 1465 states and 2487 transitions.
[2022-01-31 16:17:36,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2487 transitions.
[2022-01-31 16:17:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-01-31 16:17:36,218 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:36,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:36,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2022-01-31 16:17:36,218 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:36,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:36,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1385875143, now seen corresponding path program 1 times
[2022-01-31 16:17:36,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:36,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622322502]
[2022-01-31 16:17:36,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:36,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:36,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:36,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622322502]
[2022-01-31 16:17:36,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622322502] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:36,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:36,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:36,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306322946]
[2022-01-31 16:17:36,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:36,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:36,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:36,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:36,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:36,257 INFO L87 Difference]: Start difference. First operand 1465 states and 2487 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:36,328 INFO L93 Difference]: Finished difference Result 2699 states and 4632 transitions.
[2022-01-31 16:17:36,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:36,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31
[2022-01-31 16:17:36,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:36,337 INFO L225 Difference]: With dead ends: 2699
[2022-01-31 16:17:36,337 INFO L226 Difference]: Without dead ends: 2699
[2022-01-31 16:17:36,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:36,340 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 218 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:36,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 103 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states.
[2022-01-31 16:17:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2057.
[2022-01-31 16:17:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2053 states have (on average 1.6619581100828056) internal successors, (3412), 2053 states have internal predecessors, (3412), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 3415 transitions.
[2022-01-31 16:17:36,373 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 3415 transitions. Word has length 31
[2022-01-31 16:17:36,373 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:36,373 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 3415 transitions.
[2022-01-31 16:17:36,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 3415 transitions.
[2022-01-31 16:17:36,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-01-31 16:17:36,374 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:36,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:36,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2022-01-31 16:17:36,375 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash 388802790, now seen corresponding path program 1 times
[2022-01-31 16:17:36,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:36,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502820920]
[2022-01-31 16:17:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:36,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:36,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:36,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502820920]
[2022-01-31 16:17:36,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502820920] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:36,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:36,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:36,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750370307]
[2022-01-31 16:17:36,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:36,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:36,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:36,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:36,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:36,403 INFO L87 Difference]: Start difference. First operand 2057 states and 3415 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:36,473 INFO L93 Difference]: Finished difference Result 2859 states and 4744 transitions.
[2022-01-31 16:17:36,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:36,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31
[2022-01-31 16:17:36,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:36,480 INFO L225 Difference]: With dead ends: 2859
[2022-01-31 16:17:36,480 INFO L226 Difference]: Without dead ends: 2859
[2022-01-31 16:17:36,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:36,480 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 193 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:36,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 145 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:36,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states.
[2022-01-31 16:17:36,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2857.
[2022-01-31 16:17:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2857 states, 2853 states have (on average 1.6614090431125133) internal successors, (4740), 2853 states have internal predecessors, (4740), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 4743 transitions.
[2022-01-31 16:17:36,519 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 4743 transitions. Word has length 31
[2022-01-31 16:17:36,519 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:36,519 INFO L470 AbstractCegarLoop]: Abstraction has 2857 states and 4743 transitions.
[2022-01-31 16:17:36,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 4743 transitions.
[2022-01-31 16:17:36,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-01-31 16:17:36,521 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:36,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:36,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2022-01-31 16:17:36,521 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:36,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:36,521 INFO L85 PathProgramCache]: Analyzing trace with hash 12489205, now seen corresponding path program 1 times
[2022-01-31 16:17:36,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:36,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957362502]
[2022-01-31 16:17:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:36,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:36,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:36,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957362502]
[2022-01-31 16:17:36,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957362502] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:36,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:36,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:36,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908732279]
[2022-01-31 16:17:36,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:36,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:36,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:36,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:36,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:36,553 INFO L87 Difference]: Start difference. First operand 2857 states and 4743 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:36,623 INFO L93 Difference]: Finished difference Result 2891 states and 4744 transitions.
[2022-01-31 16:17:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:36,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32
[2022-01-31 16:17:36,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:36,630 INFO L225 Difference]: With dead ends: 2891
[2022-01-31 16:17:36,630 INFO L226 Difference]: Without dead ends: 2891
[2022-01-31 16:17:36,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:36,631 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 191 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:36,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 148 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states.
[2022-01-31 16:17:36,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 2889.
[2022-01-31 16:17:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2885 states have (on average 1.6429809358752165) internal successors, (4740), 2885 states have internal predecessors, (4740), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4743 transitions.
[2022-01-31 16:17:36,669 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4743 transitions. Word has length 32
[2022-01-31 16:17:36,669 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:36,669 INFO L470 AbstractCegarLoop]: Abstraction has 2889 states and 4743 transitions.
[2022-01-31 16:17:36,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4743 transitions.
[2022-01-31 16:17:36,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-01-31 16:17:36,671 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:36,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:36,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2022-01-31 16:17:36,671 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:36,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:36,671 INFO L85 PathProgramCache]: Analyzing trace with hash -831982666, now seen corresponding path program 1 times
[2022-01-31 16:17:36,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:36,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759769319]
[2022-01-31 16:17:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:36,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:36,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:36,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759769319]
[2022-01-31 16:17:36,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759769319] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:36,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:36,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:36,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204612784]
[2022-01-31 16:17:36,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:36,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:36,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:36,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:36,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:36,689 INFO L87 Difference]: Start difference. First operand 2889 states and 4743 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:36,762 INFO L93 Difference]: Finished difference Result 5259 states and 8744 transitions.
[2022-01-31 16:17:36,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:36,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32
[2022-01-31 16:17:36,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:36,776 INFO L225 Difference]: With dead ends: 5259
[2022-01-31 16:17:36,776 INFO L226 Difference]: Without dead ends: 5259
[2022-01-31 16:17:36,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:36,776 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 211 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:36,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 102 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:36,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states.
[2022-01-31 16:17:36,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 4105.
[2022-01-31 16:17:36,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4105 states, 4101 states have (on average 1.6005852231163131) internal successors, (6564), 4101 states have internal predecessors, (6564), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4105 states to 4105 states and 6567 transitions.
[2022-01-31 16:17:36,872 INFO L78 Accepts]: Start accepts. Automaton has 4105 states and 6567 transitions. Word has length 32
[2022-01-31 16:17:36,872 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:36,872 INFO L470 AbstractCegarLoop]: Abstraction has 4105 states and 6567 transitions.
[2022-01-31 16:17:36,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4105 states and 6567 transitions.
[2022-01-31 16:17:36,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-01-31 16:17:36,876 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:36,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:36,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2022-01-31 16:17:36,876 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:36,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:36,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1829055019, now seen corresponding path program 1 times
[2022-01-31 16:17:36,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:36,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971119975]
[2022-01-31 16:17:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:36,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:36,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:36,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971119975]
[2022-01-31 16:17:36,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971119975] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:36,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:36,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:36,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558736892]
[2022-01-31 16:17:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:36,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:36,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:36,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:36,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:36,899 INFO L87 Difference]: Start difference. First operand 4105 states and 6567 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:36,980 INFO L93 Difference]: Finished difference Result 5643 states and 9032 transitions.
[2022-01-31 16:17:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:36,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32
[2022-01-31 16:17:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:36,991 INFO L225 Difference]: With dead ends: 5643
[2022-01-31 16:17:36,991 INFO L226 Difference]: Without dead ends: 5643
[2022-01-31 16:17:36,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:36,991 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 187 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:36,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 147 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5643 states.
[2022-01-31 16:17:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5643 to 5641.
[2022-01-31 16:17:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5641 states, 5637 states have (on average 1.6015611140677666) internal successors, (9028), 5637 states have internal predecessors, (9028), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5641 states to 5641 states and 9031 transitions.
[2022-01-31 16:17:37,059 INFO L78 Accepts]: Start accepts. Automaton has 5641 states and 9031 transitions. Word has length 32
[2022-01-31 16:17:37,059 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:37,060 INFO L470 AbstractCegarLoop]: Abstraction has 5641 states and 9031 transitions.
[2022-01-31 16:17:37,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5641 states and 9031 transitions.
[2022-01-31 16:17:37,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-31 16:17:37,063 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:37,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:37,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2022-01-31 16:17:37,063 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:37,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:37,063 INFO L85 PathProgramCache]: Analyzing trace with hash -21626014, now seen corresponding path program 1 times
[2022-01-31 16:17:37,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:37,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380145975]
[2022-01-31 16:17:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:37,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:37,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:37,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:37,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380145975]
[2022-01-31 16:17:37,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380145975] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:37,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:37,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:37,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97325191]
[2022-01-31 16:17:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:37,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:37,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:37,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:37,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:37,081 INFO L87 Difference]: Start difference. First operand 5641 states and 9031 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:37,159 INFO L93 Difference]: Finished difference Result 5707 states and 9032 transitions.
[2022-01-31 16:17:37,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:37,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33
[2022-01-31 16:17:37,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:37,167 INFO L225 Difference]: With dead ends: 5707
[2022-01-31 16:17:37,167 INFO L226 Difference]: Without dead ends: 5707
[2022-01-31 16:17:37,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:37,168 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 190 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:37,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 145 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:37,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states.
[2022-01-31 16:17:37,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5705.
[2022-01-31 16:17:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 5701 states have (on average 1.5835818277495177) internal successors, (9028), 5701 states have internal predecessors, (9028), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 9031 transitions.
[2022-01-31 16:17:37,225 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 9031 transitions. Word has length 33
[2022-01-31 16:17:37,226 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:37,226 INFO L470 AbstractCegarLoop]: Abstraction has 5705 states and 9031 transitions.
[2022-01-31 16:17:37,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 9031 transitions.
[2022-01-31 16:17:37,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-31 16:17:37,229 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:37,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:37,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2022-01-31 16:17:37,230 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:37,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:37,230 INFO L85 PathProgramCache]: Analyzing trace with hash -866097885, now seen corresponding path program 1 times
[2022-01-31 16:17:37,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:37,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628410657]
[2022-01-31 16:17:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:37,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:37,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:37,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:37,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628410657]
[2022-01-31 16:17:37,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628410657] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:37,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:37,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:37,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591357944]
[2022-01-31 16:17:37,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:37,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:37,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:37,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:37,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:37,269 INFO L87 Difference]: Start difference. First operand 5705 states and 9031 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:37,373 INFO L93 Difference]: Finished difference Result 10251 states and 16456 transitions.
[2022-01-31 16:17:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:37,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33
[2022-01-31 16:17:37,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:37,387 INFO L225 Difference]: With dead ends: 10251
[2022-01-31 16:17:37,387 INFO L226 Difference]: Without dead ends: 10251
[2022-01-31 16:17:37,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:37,388 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 204 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:37,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 101 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:37,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10251 states.
[2022-01-31 16:17:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10251 to 8201.
[2022-01-31 16:17:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8201 states, 8197 states have (on average 1.5386116872026352) internal successors, (12612), 8197 states have internal predecessors, (12612), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 12615 transitions.
[2022-01-31 16:17:37,484 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 12615 transitions. Word has length 33
[2022-01-31 16:17:37,484 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:37,484 INFO L470 AbstractCegarLoop]: Abstraction has 8201 states and 12615 transitions.
[2022-01-31 16:17:37,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,484 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 12615 transitions.
[2022-01-31 16:17:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-31 16:17:37,490 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:37,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:37,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2022-01-31 16:17:37,491 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1863170238, now seen corresponding path program 1 times
[2022-01-31 16:17:37,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:37,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180171371]
[2022-01-31 16:17:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:37,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:37,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:37,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:37,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180171371]
[2022-01-31 16:17:37,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180171371] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:37,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:37,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:37,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977997498]
[2022-01-31 16:17:37,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:37,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:37,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:37,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:37,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:37,512 INFO L87 Difference]: Start difference. First operand 8201 states and 12615 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:37,599 INFO L93 Difference]: Finished difference Result 11147 states and 17160 transitions.
[2022-01-31 16:17:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:37,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33
[2022-01-31 16:17:37,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:37,614 INFO L225 Difference]: With dead ends: 11147
[2022-01-31 16:17:37,614 INFO L226 Difference]: Without dead ends: 11147
[2022-01-31 16:17:37,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:37,614 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 181 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:37,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 149 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:37,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11147 states.
[2022-01-31 16:17:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11147 to 11145.
[2022-01-31 16:17:37,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11145 states, 11141 states have (on average 1.5398976752535678) internal successors, (17156), 11141 states have internal predecessors, (17156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11145 states to 11145 states and 17159 transitions.
[2022-01-31 16:17:37,749 INFO L78 Accepts]: Start accepts. Automaton has 11145 states and 17159 transitions. Word has length 33
[2022-01-31 16:17:37,749 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:37,749 INFO L470 AbstractCegarLoop]: Abstraction has 11145 states and 17159 transitions.
[2022-01-31 16:17:37,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 11145 states and 17159 transitions.
[2022-01-31 16:17:37,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-01-31 16:17:37,756 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:37,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:37,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2022-01-31 16:17:37,756 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:37,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:37,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1079197679, now seen corresponding path program 1 times
[2022-01-31 16:17:37,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:37,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413905477]
[2022-01-31 16:17:37,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:37,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:37,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:37,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:37,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413905477]
[2022-01-31 16:17:37,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413905477] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:37,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:37,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:37,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536138132]
[2022-01-31 16:17:37,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:37,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:37,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:37,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:37,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:37,776 INFO L87 Difference]: Start difference. First operand 11145 states and 17159 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:37,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:37,861 INFO L93 Difference]: Finished difference Result 11275 states and 17160 transitions.
[2022-01-31 16:17:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:37,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34
[2022-01-31 16:17:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:37,875 INFO L225 Difference]: With dead ends: 11275
[2022-01-31 16:17:37,875 INFO L226 Difference]: Without dead ends: 11275
[2022-01-31 16:17:37,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:37,876 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 189 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:37,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 142 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:37,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11275 states.
[2022-01-31 16:17:37,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11275 to 11273.
[2022-01-31 16:17:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11273 states, 11269 states have (on average 1.5224066021829799) internal successors, (17156), 11269 states have internal predecessors, (17156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11273 states to 11273 states and 17159 transitions.
[2022-01-31 16:17:38,053 INFO L78 Accepts]: Start accepts. Automaton has 11273 states and 17159 transitions. Word has length 34
[2022-01-31 16:17:38,053 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:38,053 INFO L470 AbstractCegarLoop]: Abstraction has 11273 states and 17159 transitions.
[2022-01-31 16:17:38,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 11273 states and 17159 transitions.
[2022-01-31 16:17:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-01-31 16:17:38,060 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:38,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:38,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2022-01-31 16:17:38,060 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:38,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:38,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1923669550, now seen corresponding path program 1 times
[2022-01-31 16:17:38,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:38,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880182166]
[2022-01-31 16:17:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:38,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:38,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:38,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:38,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880182166]
[2022-01-31 16:17:38,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880182166] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:38,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:38,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:38,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523540454]
[2022-01-31 16:17:38,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:38,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:38,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:38,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:38,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:38,086 INFO L87 Difference]: Start difference. First operand 11273 states and 17159 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:38,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:38,235 INFO L93 Difference]: Finished difference Result 19979 states and 30856 transitions.
[2022-01-31 16:17:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:38,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34
[2022-01-31 16:17:38,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:38,264 INFO L225 Difference]: With dead ends: 19979
[2022-01-31 16:17:38,264 INFO L226 Difference]: Without dead ends: 19979
[2022-01-31 16:17:38,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:38,265 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 197 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:38,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 100 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:38,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19979 states.
[2022-01-31 16:17:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19979 to 16393.
[2022-01-31 16:17:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16393 states, 16389 states have (on average 1.4763560925010677) internal successors, (24196), 16389 states have internal predecessors, (24196), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16393 states to 16393 states and 24199 transitions.
[2022-01-31 16:17:38,528 INFO L78 Accepts]: Start accepts. Automaton has 16393 states and 24199 transitions. Word has length 34
[2022-01-31 16:17:38,528 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:38,528 INFO L470 AbstractCegarLoop]: Abstraction has 16393 states and 24199 transitions.
[2022-01-31 16:17:38,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:38,528 INFO L276 IsEmpty]: Start isEmpty. Operand 16393 states and 24199 transitions.
[2022-01-31 16:17:38,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-01-31 16:17:38,540 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:38,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:38,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23
[2022-01-31 16:17:38,541 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1374225393, now seen corresponding path program 1 times
[2022-01-31 16:17:38,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:38,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66835904]
[2022-01-31 16:17:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:38,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:38,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:38,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:38,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66835904]
[2022-01-31 16:17:38,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66835904] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:38,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:38,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:38,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389583377]
[2022-01-31 16:17:38,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:38,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:38,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:38,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:38,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:38,561 INFO L87 Difference]: Start difference. First operand 16393 states and 24199 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:38,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:38,666 INFO L93 Difference]: Finished difference Result 22027 states and 32520 transitions.
[2022-01-31 16:17:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:38,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34
[2022-01-31 16:17:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:38,697 INFO L225 Difference]: With dead ends: 22027
[2022-01-31 16:17:38,697 INFO L226 Difference]: Without dead ends: 22027
[2022-01-31 16:17:38,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:38,699 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 175 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:38,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 151 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22027 states.
[2022-01-31 16:17:38,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22027 to 22025.
[2022-01-31 16:17:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22025 states, 22021 states have (on average 1.4765905272240134) internal successors, (32516), 22021 states have internal predecessors, (32516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22025 states to 22025 states and 32519 transitions.
[2022-01-31 16:17:39,027 INFO L78 Accepts]: Start accepts. Automaton has 22025 states and 32519 transitions. Word has length 34
[2022-01-31 16:17:39,028 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:39,028 INFO L470 AbstractCegarLoop]: Abstraction has 22025 states and 32519 transitions.
[2022-01-31 16:17:39,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 22025 states and 32519 transitions.
[2022-01-31 16:17:39,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2022-01-31 16:17:39,051 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:39,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:39,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24
[2022-01-31 16:17:39,052 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:39,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:39,052 INFO L85 PathProgramCache]: Analyzing trace with hash 495819198, now seen corresponding path program 1 times
[2022-01-31 16:17:39,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:39,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374408055]
[2022-01-31 16:17:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:39,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:39,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:39,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:39,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374408055]
[2022-01-31 16:17:39,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374408055] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:39,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:39,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:39,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188583963]
[2022-01-31 16:17:39,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:39,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:39,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:39,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:39,073 INFO L87 Difference]: Start difference. First operand 22025 states and 32519 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:39,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:39,182 INFO L93 Difference]: Finished difference Result 22283 states and 32520 transitions.
[2022-01-31 16:17:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:39,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35
[2022-01-31 16:17:39,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:39,218 INFO L225 Difference]: With dead ends: 22283
[2022-01-31 16:17:39,219 INFO L226 Difference]: Without dead ends: 22283
[2022-01-31 16:17:39,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:39,219 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 188 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:39,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 139 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22283 states.
[2022-01-31 16:17:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22283 to 22281.
[2022-01-31 16:17:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22281 states, 22277 states have (on average 1.4596220316918795) internal successors, (32516), 22277 states have internal predecessors, (32516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22281 states to 22281 states and 32519 transitions.
[2022-01-31 16:17:39,512 INFO L78 Accepts]: Start accepts. Automaton has 22281 states and 32519 transitions. Word has length 35
[2022-01-31 16:17:39,512 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:39,513 INFO L470 AbstractCegarLoop]: Abstraction has 22281 states and 32519 transitions.
[2022-01-31 16:17:39,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:39,513 INFO L276 IsEmpty]: Start isEmpty. Operand 22281 states and 32519 transitions.
[2022-01-31 16:17:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2022-01-31 16:17:39,529 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:39,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:39,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25
[2022-01-31 16:17:39,530 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:39,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:39,530 INFO L85 PathProgramCache]: Analyzing trace with hash -348652673, now seen corresponding path program 1 times
[2022-01-31 16:17:39,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:39,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173309291]
[2022-01-31 16:17:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:39,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:39,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:39,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173309291]
[2022-01-31 16:17:39,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173309291] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:39,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:39,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:39,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743678322]
[2022-01-31 16:17:39,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:39,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:39,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:39,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:39,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:39,551 INFO L87 Difference]: Start difference. First operand 22281 states and 32519 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:39,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:39,788 INFO L93 Difference]: Finished difference Result 43531 states and 61960 transitions.
[2022-01-31 16:17:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:39,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35
[2022-01-31 16:17:39,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:39,844 INFO L225 Difference]: With dead ends: 43531
[2022-01-31 16:17:39,845 INFO L226 Difference]: Without dead ends: 43531
[2022-01-31 16:17:39,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:39,845 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 208 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:39,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 117 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:39,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43531 states.
[2022-01-31 16:17:40,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43531 to 43529.
[2022-01-31 16:17:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43529 states, 43525 states have (on average 1.4234577828834003) internal successors, (61956), 43525 states have internal predecessors, (61956), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43529 states to 43529 states and 61959 transitions.
[2022-01-31 16:17:40,387 INFO L78 Accepts]: Start accepts. Automaton has 43529 states and 61959 transitions. Word has length 35
[2022-01-31 16:17:40,387 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:40,387 INFO L470 AbstractCegarLoop]: Abstraction has 43529 states and 61959 transitions.
[2022-01-31 16:17:40,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 43529 states and 61959 transitions.
[2022-01-31 16:17:40,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2022-01-31 16:17:40,414 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:40,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:40,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26
[2022-01-31 16:17:40,414 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:40,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:40,415 INFO L85 PathProgramCache]: Analyzing trace with hash 648419680, now seen corresponding path program 1 times
[2022-01-31 16:17:40,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:40,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640333284]
[2022-01-31 16:17:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:40,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:40,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:40,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640333284]
[2022-01-31 16:17:40,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640333284] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:40,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:40,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:40,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596241421]
[2022-01-31 16:17:40,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:40,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:40,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:40,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:40,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:40,434 INFO L87 Difference]: Start difference. First operand 43529 states and 61959 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:40,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:40,729 INFO L93 Difference]: Finished difference Result 49675 states and 72712 transitions.
[2022-01-31 16:17:40,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:40,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35
[2022-01-31 16:17:40,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:40,808 INFO L225 Difference]: With dead ends: 49675
[2022-01-31 16:17:40,808 INFO L226 Difference]: Without dead ends: 49675
[2022-01-31 16:17:40,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:40,809 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 129 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:40,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 156 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49675 states.
[2022-01-31 16:17:41,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49675 to 43529.
[2022-01-31 16:17:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43529 states, 43525 states have (on average 1.411694428489374) internal successors, (61444), 43525 states have internal predecessors, (61444), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43529 states to 43529 states and 61447 transitions.
[2022-01-31 16:17:41,305 INFO L78 Accepts]: Start accepts. Automaton has 43529 states and 61447 transitions. Word has length 35
[2022-01-31 16:17:41,305 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:41,305 INFO L470 AbstractCegarLoop]: Abstraction has 43529 states and 61447 transitions.
[2022-01-31 16:17:41,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 43529 states and 61447 transitions.
[2022-01-31 16:17:41,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-01-31 16:17:41,319 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:41,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:41,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27
[2022-01-31 16:17:41,320 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:41,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2076702253, now seen corresponding path program 1 times
[2022-01-31 16:17:41,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:41,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246366787]
[2022-01-31 16:17:41,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:41,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:41,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:41,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246366787]
[2022-01-31 16:17:41,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246366787] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:41,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:41,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:41,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853505655]
[2022-01-31 16:17:41,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:41,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:41,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:41,343 INFO L87 Difference]: Start difference. First operand 43529 states and 61447 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:41,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:41,529 INFO L93 Difference]: Finished difference Result 75275 states and 107528 transitions.
[2022-01-31 16:17:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:41,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36
[2022-01-31 16:17:41,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:41,842 INFO L225 Difference]: With dead ends: 75275
[2022-01-31 16:17:41,842 INFO L226 Difference]: Without dead ends: 75275
[2022-01-31 16:17:41,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:41,843 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 183 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:41,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 98 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:41,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75275 states.
[2022-01-31 16:17:42,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75275 to 65033.
[2022-01-31 16:17:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65033 states, 65029 states have (on average 1.3700349075028064) internal successors, (89092), 65029 states have internal predecessors, (89092), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:42,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65033 states to 65033 states and 89095 transitions.
[2022-01-31 16:17:42,625 INFO L78 Accepts]: Start accepts. Automaton has 65033 states and 89095 transitions. Word has length 36
[2022-01-31 16:17:42,625 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:42,625 INFO L470 AbstractCegarLoop]: Abstraction has 65033 states and 89095 transitions.
[2022-01-31 16:17:42,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:42,625 INFO L276 IsEmpty]: Start isEmpty. Operand 65033 states and 89095 transitions.
[2022-01-31 16:17:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-01-31 16:17:42,654 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:42,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:42,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28
[2022-01-31 16:17:42,655 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:42,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1079629900, now seen corresponding path program 1 times
[2022-01-31 16:17:42,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:42,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986224577]
[2022-01-31 16:17:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:42,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:42,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:42,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986224577]
[2022-01-31 16:17:42,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986224577] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:42,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:42,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:42,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597280097]
[2022-01-31 16:17:42,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:42,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:42,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:42,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:42,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:42,673 INFO L87 Difference]: Start difference. First operand 65033 states and 89095 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:43,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:43,025 INFO L93 Difference]: Finished difference Result 85515 states and 116744 transitions.
[2022-01-31 16:17:43,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:43,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36
[2022-01-31 16:17:43,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:43,109 INFO L225 Difference]: With dead ends: 85515
[2022-01-31 16:17:43,109 INFO L226 Difference]: Without dead ends: 85515
[2022-01-31 16:17:43,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:43,110 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 163 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:43,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 155 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:43,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85515 states.
[2022-01-31 16:17:43,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85515 to 85513.
[2022-01-31 16:17:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85513 states, 85509 states have (on average 1.3652364078634998) internal successors, (116740), 85509 states have internal predecessors, (116740), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85513 states to 85513 states and 116743 transitions.
[2022-01-31 16:17:44,004 INFO L78 Accepts]: Start accepts. Automaton has 85513 states and 116743 transitions. Word has length 36
[2022-01-31 16:17:44,004 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:44,004 INFO L470 AbstractCegarLoop]: Abstraction has 85513 states and 116743 transitions.
[2022-01-31 16:17:44,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 85513 states and 116743 transitions.
[2022-01-31 16:17:44,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2022-01-31 16:17:44,047 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:44,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:44,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2022-01-31 16:17:44,048 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:44,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:44,048 INFO L85 PathProgramCache]: Analyzing trace with hash -46706245, now seen corresponding path program 1 times
[2022-01-31 16:17:44,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:44,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956356006]
[2022-01-31 16:17:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:44,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:44,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:44,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:44,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956356006]
[2022-01-31 16:17:44,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956356006] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:44,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:44,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:44,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473787882]
[2022-01-31 16:17:44,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:44,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:44,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:44,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:44,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:44,069 INFO L87 Difference]: Start difference. First operand 85513 states and 116743 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:44,524 INFO L93 Difference]: Finished difference Result 87051 states and 117768 transitions.
[2022-01-31 16:17:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:44,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37
[2022-01-31 16:17:44,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:44,613 INFO L225 Difference]: With dead ends: 87051
[2022-01-31 16:17:44,613 INFO L226 Difference]: Without dead ends: 87051
[2022-01-31 16:17:44,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:44,614 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 186 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:44,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 133 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87051 states.
[2022-01-31 16:17:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87051 to 87049.
[2022-01-31 16:17:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87049 states, 87045 states have (on average 1.3529094146705727) internal successors, (117764), 87045 states have internal predecessors, (117764), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87049 states to 87049 states and 117767 transitions.
[2022-01-31 16:17:45,482 INFO L78 Accepts]: Start accepts. Automaton has 87049 states and 117767 transitions. Word has length 37
[2022-01-31 16:17:45,482 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:45,482 INFO L470 AbstractCegarLoop]: Abstraction has 87049 states and 117767 transitions.
[2022-01-31 16:17:45,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand 87049 states and 117767 transitions.
[2022-01-31 16:17:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2022-01-31 16:17:45,515 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:45,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:45,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30
[2022-01-31 16:17:45,515 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:45,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:45,516 INFO L85 PathProgramCache]: Analyzing trace with hash -891178116, now seen corresponding path program 1 times
[2022-01-31 16:17:45,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:45,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762404263]
[2022-01-31 16:17:45,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:45,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:45,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:45,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:45,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762404263]
[2022-01-31 16:17:45,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762404263] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:45,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:45,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:45,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702294985]
[2022-01-31 16:17:45,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:45,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:45,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:45,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:45,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:45,533 INFO L87 Difference]: Start difference. First operand 87049 states and 117767 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:46,115 INFO L93 Difference]: Finished difference Result 147467 states and 200712 transitions.
[2022-01-31 16:17:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:46,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37
[2022-01-31 16:17:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:46,288 INFO L225 Difference]: With dead ends: 147467
[2022-01-31 16:17:46,288 INFO L226 Difference]: Without dead ends: 147467
[2022-01-31 16:17:46,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:46,288 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 176 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:46,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 97 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:46,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147467 states.
[2022-01-31 16:17:47,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147467 to 131081.
[2022-01-31 16:17:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131081 states, 131077 states have (on average 1.312480450422271) internal successors, (172036), 131077 states have internal predecessors, (172036), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131081 states to 131081 states and 172039 transitions.
[2022-01-31 16:17:47,969 INFO L78 Accepts]: Start accepts. Automaton has 131081 states and 172039 transitions. Word has length 37
[2022-01-31 16:17:47,969 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:47,969 INFO L470 AbstractCegarLoop]: Abstraction has 131081 states and 172039 transitions.
[2022-01-31 16:17:47,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 131081 states and 172039 transitions.
[2022-01-31 16:17:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2022-01-31 16:17:48,068 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:48,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:48,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31
[2022-01-31 16:17:48,069 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:48,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:48,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1888250469, now seen corresponding path program 1 times
[2022-01-31 16:17:48,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:48,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880222529]
[2022-01-31 16:17:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:48,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:48,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:48,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:48,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880222529]
[2022-01-31 16:17:48,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880222529] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:48,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:48,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:48,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754283587]
[2022-01-31 16:17:48,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:48,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:48,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:48,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:48,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:48,091 INFO L87 Difference]: Start difference. First operand 131081 states and 172039 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:48,725 INFO L93 Difference]: Finished difference Result 169995 states and 221192 transitions.
[2022-01-31 16:17:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:48,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37
[2022-01-31 16:17:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:48,888 INFO L225 Difference]: With dead ends: 169995
[2022-01-31 16:17:48,889 INFO L226 Difference]: Without dead ends: 169995
[2022-01-31 16:17:48,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:48,889 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 157 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:48,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 157 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:48,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169995 states.
[2022-01-31 16:17:50,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169995 to 169993.
[2022-01-31 16:17:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169993 states, 169989 states have (on average 1.3011900770049827) internal successors, (221188), 169989 states have internal predecessors, (221188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169993 states to 169993 states and 221191 transitions.
[2022-01-31 16:17:50,482 INFO L78 Accepts]: Start accepts. Automaton has 169993 states and 221191 transitions. Word has length 37
[2022-01-31 16:17:50,482 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:50,482 INFO L470 AbstractCegarLoop]: Abstraction has 169993 states and 221191 transitions.
[2022-01-31 16:17:50,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:50,483 INFO L276 IsEmpty]: Start isEmpty. Operand 169993 states and 221191 transitions.
[2022-01-31 16:17:50,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2022-01-31 16:17:50,865 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:50,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:50,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32
[2022-01-31 16:17:50,865 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:50,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:50,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1856684344, now seen corresponding path program 1 times
[2022-01-31 16:17:50,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:50,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418969963]
[2022-01-31 16:17:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:50,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:50,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:50,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:50,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418969963]
[2022-01-31 16:17:50,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418969963] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:50,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:50,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:50,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878337228]
[2022-01-31 16:17:50,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:50,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:50,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:50,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:50,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:50,889 INFO L87 Difference]: Start difference. First operand 169993 states and 221191 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:51,335 INFO L93 Difference]: Finished difference Result 172043 states and 221192 transitions.
[2022-01-31 16:17:51,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:51,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38
[2022-01-31 16:17:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:51,805 INFO L225 Difference]: With dead ends: 172043
[2022-01-31 16:17:51,805 INFO L226 Difference]: Without dead ends: 172043
[2022-01-31 16:17:51,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:51,806 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 185 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:51,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 130 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:51,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172043 states.
[2022-01-31 16:17:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172043 to 172041.
[2022-01-31 16:17:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172041 states, 172037 states have (on average 1.2857001691496597) internal successors, (221188), 172037 states have internal predecessors, (221188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172041 states to 172041 states and 221191 transitions.
[2022-01-31 16:17:53,741 INFO L78 Accepts]: Start accepts. Automaton has 172041 states and 221191 transitions. Word has length 38
[2022-01-31 16:17:53,741 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:53,741 INFO L470 AbstractCegarLoop]: Abstraction has 172041 states and 221191 transitions.
[2022-01-31 16:17:53,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:53,741 INFO L276 IsEmpty]: Start isEmpty. Operand 172041 states and 221191 transitions.
[2022-01-31 16:17:53,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2022-01-31 16:17:53,822 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:53,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:53,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33
[2022-01-31 16:17:53,823 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:53,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1593811081, now seen corresponding path program 1 times
[2022-01-31 16:17:53,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:53,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950427615]
[2022-01-31 16:17:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:53,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:53,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:53,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950427615]
[2022-01-31 16:17:53,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950427615] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:53,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:53,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:53,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529833821]
[2022-01-31 16:17:53,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:53,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:53,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:53,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:53,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:53,846 INFO L87 Difference]: Start difference. First operand 172041 states and 221191 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:54,711 INFO L93 Difference]: Finished difference Result 286731 states and 368648 transitions.
[2022-01-31 16:17:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38
[2022-01-31 16:17:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:55,067 INFO L225 Difference]: With dead ends: 286731
[2022-01-31 16:17:55,067 INFO L226 Difference]: Without dead ends: 286731
[2022-01-31 16:17:55,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:55,068 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 169 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:55,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 96 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:17:55,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286731 states.
[2022-01-31 16:17:57,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286731 to 262153.
[2022-01-31 16:17:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262153 states, 262149 states have (on average 1.2499914170948583) internal successors, (327684), 262149 states have internal predecessors, (327684), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262153 states to 262153 states and 327687 transitions.
[2022-01-31 16:17:58,178 INFO L78 Accepts]: Start accepts. Automaton has 262153 states and 327687 transitions. Word has length 38
[2022-01-31 16:17:58,178 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:17:58,179 INFO L470 AbstractCegarLoop]: Abstraction has 262153 states and 327687 transitions.
[2022-01-31 16:17:58,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 262153 states and 327687 transitions.
[2022-01-31 16:17:58,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2022-01-31 16:17:58,317 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:17:58,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:17:58,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34
[2022-01-31 16:17:58,317 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:17:58,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:17:58,317 INFO L85 PathProgramCache]: Analyzing trace with hash 596738728, now seen corresponding path program 1 times
[2022-01-31 16:17:58,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:17:58,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311477962]
[2022-01-31 16:17:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:17:58,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:17:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:17:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:17:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:17:58,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:17:58,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311477962]
[2022-01-31 16:17:58,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311477962] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:17:58,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:17:58,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:17:58,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998411771]
[2022-01-31 16:17:58,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:17:58,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:17:58,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:17:58,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:17:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:17:58,340 INFO L87 Difference]: Start difference. First operand 262153 states and 327687 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:17:59,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:17:59,315 INFO L93 Difference]: Finished difference Result 335883 states and 413704 transitions.
[2022-01-31 16:17:59,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:17:59,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38
[2022-01-31 16:17:59,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:17:59,717 INFO L225 Difference]: With dead ends: 335883
[2022-01-31 16:17:59,717 INFO L226 Difference]: Without dead ends: 335883
[2022-01-31 16:17:59,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:17:59,717 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 151 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:17:59,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 159 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:18:00,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335883 states.
[2022-01-31 16:18:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335883 to 335881.
[2022-01-31 16:18:03,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335881 states, 335877 states have (on average 1.2317008905045597) internal successors, (413700), 335877 states have internal predecessors, (413700), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335881 states to 335881 states and 413703 transitions.
[2022-01-31 16:18:03,934 INFO L78 Accepts]: Start accepts. Automaton has 335881 states and 413703 transitions. Word has length 38
[2022-01-31 16:18:03,934 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:18:03,934 INFO L470 AbstractCegarLoop]: Abstraction has 335881 states and 413703 transitions.
[2022-01-31 16:18:03,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 335881 states and 413703 transitions.
[2022-01-31 16:18:04,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-01-31 16:18:04,440 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:18:04,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:18:04,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35
[2022-01-31 16:18:04,441 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:18:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:18:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2131430441, now seen corresponding path program 1 times
[2022-01-31 16:18:04,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:18:04,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338433755]
[2022-01-31 16:18:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:18:04,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:18:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:18:04,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:18:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:18:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:18:04,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:18:04,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338433755]
[2022-01-31 16:18:04,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338433755] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:18:04,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:18:04,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:18:04,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6903707]
[2022-01-31 16:18:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:18:04,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:18:04,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:18:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:18:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:18:04,460 INFO L87 Difference]: Start difference. First operand 335881 states and 413703 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:05,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:18:05,427 INFO L93 Difference]: Finished difference Result 339979 states and 413704 transitions.
[2022-01-31 16:18:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:18:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39
[2022-01-31 16:18:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:18:05,796 INFO L225 Difference]: With dead ends: 339979
[2022-01-31 16:18:05,796 INFO L226 Difference]: Without dead ends: 339979
[2022-01-31 16:18:05,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:18:05,797 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 184 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:18:05,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 127 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:18:05,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339979 states.
[2022-01-31 16:18:08,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339979 to 339977.
[2022-01-31 16:18:08,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339977 states, 339973 states have (on average 1.2168613389886844) internal successors, (413700), 339973 states have internal predecessors, (413700), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339977 states to 339977 states and 413703 transitions.
[2022-01-31 16:18:09,489 INFO L78 Accepts]: Start accepts. Automaton has 339977 states and 413703 transitions. Word has length 39
[2022-01-31 16:18:09,489 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:18:09,489 INFO L470 AbstractCegarLoop]: Abstraction has 339977 states and 413703 transitions.
[2022-01-31 16:18:09,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:09,489 INFO L276 IsEmpty]: Start isEmpty. Operand 339977 states and 413703 transitions.
[2022-01-31 16:18:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-01-31 16:18:09,955 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:18:09,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:18:09,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36
[2022-01-31 16:18:09,955 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:18:09,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:18:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1319064984, now seen corresponding path program 1 times
[2022-01-31 16:18:09,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:18:09,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393774875]
[2022-01-31 16:18:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:18:09,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:18:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:18:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:18:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:18:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:18:09,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:18:09,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393774875]
[2022-01-31 16:18:09,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393774875] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:18:09,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:18:09,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:18:09,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190679962]
[2022-01-31 16:18:09,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:18:09,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:18:09,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:18:09,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:18:09,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:18:09,973 INFO L87 Difference]: Start difference. First operand 339977 states and 413703 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:18:11,251 INFO L93 Difference]: Finished difference Result 557067 states and 671752 transitions.
[2022-01-31 16:18:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:18:11,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39
[2022-01-31 16:18:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:18:12,336 INFO L225 Difference]: With dead ends: 557067
[2022-01-31 16:18:12,336 INFO L226 Difference]: Without dead ends: 557067
[2022-01-31 16:18:12,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:18:12,337 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 162 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:18:12,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 95 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:18:12,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557067 states.
[2022-01-31 16:18:16,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557067 to 524297.
[2022-01-31 16:18:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524297 states, 524293 states have (on average 1.1874963045472664) internal successors, (622596), 524293 states have internal predecessors, (622596), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:19,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524297 states to 524297 states and 622599 transitions.
[2022-01-31 16:18:19,199 INFO L78 Accepts]: Start accepts. Automaton has 524297 states and 622599 transitions. Word has length 39
[2022-01-31 16:18:19,199 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:18:19,199 INFO L470 AbstractCegarLoop]: Abstraction has 524297 states and 622599 transitions.
[2022-01-31 16:18:19,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 524297 states and 622599 transitions.
[2022-01-31 16:18:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-01-31 16:18:19,917 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:18:19,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:18:19,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37
[2022-01-31 16:18:19,917 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:18:19,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:18:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash 321992631, now seen corresponding path program 1 times
[2022-01-31 16:18:19,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:18:19,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146944392]
[2022-01-31 16:18:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:18:19,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:18:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:18:19,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:18:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:18:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:18:19,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:18:19,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146944392]
[2022-01-31 16:18:19,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146944392] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:18:19,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:18:19,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:18:19,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715958060]
[2022-01-31 16:18:19,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:18:19,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:18:19,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:18:19,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:18:19,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:18:19,986 INFO L87 Difference]: Start difference. First operand 524297 states and 622599 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:18:22,416 INFO L93 Difference]: Finished difference Result 663563 states and 770056 transitions.
[2022-01-31 16:18:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:18:22,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39
[2022-01-31 16:18:22,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:18:23,843 INFO L225 Difference]: With dead ends: 663563
[2022-01-31 16:18:23,843 INFO L226 Difference]: Without dead ends: 663563
[2022-01-31 16:18:23,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:18:23,844 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 145 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 16:18:23,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 161 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 16:18:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663563 states.
[2022-01-31 16:18:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663563 to 663561.
[2022-01-31 16:18:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663561 states, 663557 states have (on average 1.1604911107862625) internal successors, (770052), 663557 states have internal predecessors, (770052), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663561 states to 663561 states and 770055 transitions.
[2022-01-31 16:18:31,771 INFO L78 Accepts]: Start accepts. Automaton has 663561 states and 770055 transitions. Word has length 39
[2022-01-31 16:18:31,771 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:18:31,771 INFO L470 AbstractCegarLoop]: Abstraction has 663561 states and 770055 transitions.
[2022-01-31 16:18:31,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 663561 states and 770055 transitions.
[2022-01-31 16:18:32,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2022-01-31 16:18:32,658 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:18:32,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:18:32,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38
[2022-01-31 16:18:32,658 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:18:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:18:32,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2058624732, now seen corresponding path program 1 times
[2022-01-31 16:18:32,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:18:32,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343289089]
[2022-01-31 16:18:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:18:32,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:18:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:18:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:18:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:18:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:18:32,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:18:32,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343289089]
[2022-01-31 16:18:32,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343289089] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:18:32,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:18:32,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:18:32,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131550285]
[2022-01-31 16:18:32,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:18:32,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:18:32,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:18:32,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:18:32,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:18:32,695 INFO L87 Difference]: Start difference. First operand 663561 states and 770055 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:18:34,994 INFO L93 Difference]: Finished difference Result 671755 states and 770056 transitions.
[2022-01-31 16:18:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:18:34,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40
[2022-01-31 16:18:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:18:36,538 INFO L225 Difference]: With dead ends: 671755
[2022-01-31 16:18:36,538 INFO L226 Difference]: Without dead ends: 671755
[2022-01-31 16:18:36,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:18:36,539 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 183 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 16:18:36,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 124 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 16:18:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671755 states.
[2022-01-31 16:18:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671755 to 671753.
[2022-01-31 16:18:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671753 states, 671749 states have (on average 1.1463388855063423) internal successors, (770052), 671749 states have internal predecessors, (770052), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671753 states to 671753 states and 770055 transitions.
[2022-01-31 16:18:45,431 INFO L78 Accepts]: Start accepts. Automaton has 671753 states and 770055 transitions. Word has length 40
[2022-01-31 16:18:45,431 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:18:45,431 INFO L470 AbstractCegarLoop]: Abstraction has 671753 states and 770055 transitions.
[2022-01-31 16:18:45,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:45,431 INFO L276 IsEmpty]: Start isEmpty. Operand 671753 states and 770055 transitions.
[2022-01-31 16:18:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2022-01-31 16:18:46,200 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:18:46,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:18:46,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39
[2022-01-31 16:18:46,200 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:18:46,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:18:46,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1391870693, now seen corresponding path program 1 times
[2022-01-31 16:18:46,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:18:46,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147804608]
[2022-01-31 16:18:46,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:18:46,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:18:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:18:46,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:18:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:18:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:18:46,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:18:46,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147804608]
[2022-01-31 16:18:46,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147804608] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:18:46,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:18:46,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:18:46,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190030514]
[2022-01-31 16:18:46,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:18:46,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:18:46,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:18:46,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:18:46,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:18:46,252 INFO L87 Difference]: Start difference. First operand 671753 states and 770055 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:18:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:18:49,405 INFO L93 Difference]: Finished difference Result 1081353 states and 1212423 transitions.
[2022-01-31 16:18:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:18:49,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40
[2022-01-31 16:18:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:18:51,519 INFO L225 Difference]: With dead ends: 1081353
[2022-01-31 16:18:51,519 INFO L226 Difference]: Without dead ends: 1081353
[2022-01-31 16:18:51,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:18:51,520 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 154 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:18:51,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 93 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:18:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081353 states.
[2022-01-31 16:19:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081353 to 1048585.
[2022-01-31 16:19:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048585 states, 1048581 states have (on average 1.1249984502866255) internal successors, (1179652), 1048581 states have internal predecessors, (1179652), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:19:04,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048585 states to 1048585 states and 1179655 transitions.
[2022-01-31 16:19:04,786 INFO L78 Accepts]: Start accepts. Automaton has 1048585 states and 1179655 transitions. Word has length 40
[2022-01-31 16:19:04,786 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:19:04,786 INFO L470 AbstractCegarLoop]: Abstraction has 1048585 states and 1179655 transitions.
[2022-01-31 16:19:04,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:19:04,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1048585 states and 1179655 transitions.
[2022-01-31 16:19:05,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2022-01-31 16:19:05,967 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 16:19:05,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-31 16:19:05,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40
[2022-01-31 16:19:05,969 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 16:19:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 16:19:05,974 INFO L85 PathProgramCache]: Analyzing trace with hash 394798340, now seen corresponding path program 1 times
[2022-01-31 16:19:05,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 16:19:05,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546585225]
[2022-01-31 16:19:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 16:19:05,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 16:19:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:19:06,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 16:19:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 16:19:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-31 16:19:06,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 16:19:06,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546585225]
[2022-01-31 16:19:06,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546585225] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 16:19:06,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 16:19:06,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-31 16:19:06,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963870189]
[2022-01-31 16:19:06,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 16:19:06,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-31 16:19:06,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 16:19:06,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-31 16:19:06,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-31 16:19:06,541 INFO L87 Difference]: Start difference. First operand 1048585 states and 1179655 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:19:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 16:19:10,656 INFO L93 Difference]: Finished difference Result 1310727 states and 1425414 transitions.
[2022-01-31 16:19:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-01-31 16:19:10,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40
[2022-01-31 16:19:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 16:19:10,656 INFO L225 Difference]: With dead ends: 1310727
[2022-01-31 16:19:10,656 INFO L226 Difference]: Without dead ends: 0
[2022-01-31 16:19:10,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-31 16:19:10,657 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 136 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 16:19:10,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 162 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 16:19:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-01-31 16:19:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-01-31 16:19:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-31 16:19:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-01-31 16:19:10,658 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40
[2022-01-31 16:19:10,658 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 16:19:10,658 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-01-31 16:19:10,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-01-31 16:19:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-01-31 16:19:10,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-01-31 16:19:10,660 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-01-31 16:19:10,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41
[2022-01-31 16:19:10,662 INFO L732 BasicCegarLoop]: Path program 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]
[2022-01-31 16:19:10,663 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-01-31 16:19:10,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:19:10 BasicIcfg
[2022-01-31 16:19:10,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-01-31 16:19:10,664 INFO L158 Benchmark]: Toolchain (without parser) took 97439.57ms. Allocated memory was 187.7MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 132.5MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB.
[2022-01-31 16:19:10,664 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-01-31 16:19:10,664 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.74ms. Allocated memory was 187.7MB in the beginning and 262.1MB in the end (delta: 74.4MB). Free memory was 132.3MB in the beginning and 234.6MB in the end (delta: -102.3MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB.
[2022-01-31 16:19:10,665 INFO L158 Benchmark]: Boogie Preprocessor took 43.04ms. Allocated memory is still 262.1MB. Free memory was 234.6MB in the beginning and 233.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-01-31 16:19:10,665 INFO L158 Benchmark]: RCFGBuilder took 317.13ms. Allocated memory is still 262.1MB. Free memory was 233.1MB in the beginning and 217.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB.
[2022-01-31 16:19:10,665 INFO L158 Benchmark]: IcfgTransformer took 16.87ms. Allocated memory is still 262.1MB. Free memory was 217.3MB in the beginning and 215.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-01-31 16:19:10,665 INFO L158 Benchmark]: TraceAbstraction took 96764.88ms. Allocated memory was 262.1MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 215.2MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB.
[2022-01-31 16:19:10,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 291.74ms. Allocated memory was 187.7MB in the beginning and 262.1MB in the end (delta: 74.4MB). Free memory was 132.3MB in the beginning and 234.6MB in the end (delta: -102.3MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 43.04ms. Allocated memory is still 262.1MB. Free memory was 234.6MB in the beginning and 233.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* RCFGBuilder took 317.13ms. Allocated memory is still 262.1MB. Free memory was 233.1MB in the beginning and 217.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB.
* IcfgTransformer took 16.87ms. Allocated memory is still 262.1MB. Free memory was 217.3MB in the beginning and 215.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* TraceAbstraction took 96764.88ms. Allocated memory was 262.1MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 215.2MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 233]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 96.7s, OverallIterations: 42, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 5.5s, AutomataDifference: 30.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7972 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7972 mSDsluCounter, 5546 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 296 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3679 IncrementalHoareTripleChecker+Invalid, 3778 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 5250 mSDtfsCounter, 3679 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 294 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1048585occurred in iteration=41, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 58.5s AutomataMinimizationTime, 42 MinimizatonAttempts, 131118 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1395 NumberOfCodeBlocks, 1395 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1353 ConstructedInterpolants, 0 QuantifiedInterpolants, 3075 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 42 InterpolantComputations, 42 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2022-01-31 16:19:10,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...